Q: Her smile was contagious.
(a) arrogant
(b) disrespectful
(c) sarcastic
(d) catching
Answer with full explanation — NDA 2021 (I) → Q: Her dynamic nature impressed everyone.
(a) enduring
(b) attentive
(c) evolutionary
(d) jealous
Answer with full explanation — NDA 2021 (I) → Q: She was lamenting her destiny.
(a) celebrating
(b) bemoaning
(c) blaming
(d) making
Answer with full explanation — NDA 2021 (I) → Q: Under his leadership the company grew in an organic manner.
(a) natural
(b) speedy
(c) unusual
(d) disciplined
Answer with full explanation — NDA 2021 (I) → Q: His charm lies in his oratory.
(a) deceit
(b) eloquence
(c) looks
(d) nobility
Answer with full explanation — NDA 2021 (I) → Q: She is a patron of art and culture.
(a) entrepreneur
(b) admirer
(c) critique
(d) backer
Answer with full explanation — NDA 2021 (I) → Q: Arrogance is a hallmark of his nature.
(a) concern
(b) unpretentiousness
(c) conceit
(d) simplicity
Answer with full explanation — NDA 2021 (I) → Q: She undertook a reconnaissance of the entire issue.
(a) revaluation
(b) ratification
(c) investigation
(d) regularisation
Answer with full explanation — NDA 2021 (I) → Q: My daughter is my replica.
(a) pride
(b) clone
(c) love
(d) original
Answer with full explanation — NDA 2021 (I) → Q: The sardonic nature of her stories made her stand out among the contemporary writers.
(a) compassionate
(b) insightful
(c) mocking
(d) comic
Answer with full explanation — NDA 2021 (I) → Q: He found her extremely attractive and charming.
(a) unnatural
(b) modern
(c) repulsive
(d) disapproving
Answer with full explanation — NDA 2021 (I) → Q: The sky is boundless.
(a) high
(b) vast
(c) expansive
(d) finite
Answer with full explanation — NDA 2021 (I) → Q: The sky is clear today.
(a) bright
(b) opaque
(c) cloudless
(d) blue
Answer with full explanation — NDA 2021 (I) → Q: I have a fascination for deep waters.
(a) dark
(b) light
(c) dangerous
(d) shallow
Answer with full explanation — NDA 2021 (I) → Q: My boss has been too generous.
(a) stingy
(b) rough
(c) evil
(d) hostile
Answer with full explanation — NDA 2021 (I) → Q: Spring is a time of plenty.
(a) ugliness
(b) scarcity
(c) roughness
(d) dryness
Answer with full explanation — NDA 2021 (I) → Q: He is an industrious workman.
(a) active
(b) productive
(c) lazy
(d) disloyal
Answer with full explanation — NDA 2021 (I) → Q: Plants grow in abundance here.
(a) shrivel
(b) stretch
(c) spread
(d) enlarge
Answer with full explanation — NDA 2021 (I) → Q: She rarely comes here.
(a) seldom
(b) never
(c) always
(d) frequently
Answer with full explanation — NDA 2021 (I) → Q: She is a rather crooked woman.
(a) polite
(b) generous
(c) straightforward
(d) happy
Answer with full explanation — NDA 2021 (I) → Q: Overstep the mark
(a) To tell people how successful you are
(b) To step into someone else's areas of expertise
(c) To upset someone by doing/saying more than you should
(d) To do something in an excited way
Answer with full explanation — NDA 2021 (I) → Q: Palsy-walsy friends
(a) Good friends
(b) Friends who help each other in difficult situations
(c) Friends by choice, and not by chance
(d) Unfriendly
Answer with full explanation — NDA 2021 (I) → Q: Open a Pandora's box
(a) To do something that causes a lot of new problems that you did not expect
(b) To do something out of compulsion
(c) To do something beyond expectation
(d) To do something out of the box, that causes awards and ceremonies for you
Answer with full explanation — NDA 2021 (I) → Q: Pull your socks up
(a) To get well-dressed for the occasion
(b) Improve your work or behaviour
(c) To speak in an honest way without hesitation
(d) To be in control of an organization, often secretly
Answer with full explanation — NDA 2021 (I) → Q: To get under somebody's skin
(a) To deceive someone
(b) To admire someone
(c) To annoy someone
(d) To support someone
Answer with full explanation — NDA 2021 (I) → Q: Turn topsy-turvy
(a) To completely change something
(b) To completely evaluate something
(c) To enjoy yourself greatly
(d) To exhaust yourself completely
Answer with full explanation — NDA 2021 (I) → Q: A clarion call
(a) A trumpet call
(b) An intimidating voice
(c) A strong request
(d) An urgent order
Answer with full explanation — NDA 2021 (I) → Q: Fire in the belly
(a) Fear and hatred
(b) Powerful ambition
(c) Love and dedication
(d) Lethargy and indifference
Answer with full explanation — NDA 2021 (I) → Q: A hunky-dory situation
(a) There are serious issues among people
(b) There are no problems and people are happy
(c) There is war and bloodshed all over
(d) There is no work, only enjoyment
Answer with full explanation — NDA 2021 (I) → Q: Give somebody a leg up
(a) To pull someone down
(b) To deceive and betray someone
(c) To help someone for their livelihood
(d) To help someone to be successful
Answer with full explanation — NDA 2021 (I) → Q: You don’t have a monopoly on suffering; other people don’t have problems too.
(a) You don’t have
(b) a monopoly on suffering;
(c) other people don’t have problems too.
(d) No error
Answer with full explanation — NDA 2021 (I) → Q: If you say that someone you admire has feet of clay, you mean that they have hidden faults.
(a) If you say that someone
(b) you admire has feet of clay,
(c) you mean that they have hidden faults.
(d) No error
Answer with full explanation — NDA 2021 (I) → Q: He refused to change his decision; he refused it point out.
(a) He refused to change
(b) his decision;
(c) he refused it point out.
(d) No error
Answer with full explanation — NDA 2021 (I) → Q: The importance of trade in Mughal times reinforced the cultural definition of wealth as something comprising of movable property.
(a) The importance of trade in Mughal times reinforced
(b) the cultural definition of wealth as something
(c) comprising of movable property.
(d) No error
Answer with full explanation — NDA 2021 (I) → Q: In the nineteenth century, most traditional scholars tried to stay clear from the imperial Government.
(a) In the nineteenth century,
(b) most traditional scholars
(c) tried to stay clear from the imperial Government.
(d) No error
Answer with full explanation — NDA 2021 (I) → Q: He began his discussion by pointing over that men and women had different biological functions.
(a) He began his discussion by pointing over
(b) that men and women
(c) had different biological functions.
(d) No error
Answer with full explanation — NDA 2021 (I) → Q: Though he is poor, but he is honest.
(a) Though he is poor,
(b) but he is
(c) honest.
(d) No error
Answer with full explanation — NDA 2021 (I) → Q: My mother has been doing everything for the family.
(a) My mother
(b) has been doing
(c) everything for the family.
(d) No error
Answer with full explanation — NDA 2021 (I) → Q: When learning to dive it is important to relax in between and take breaks.
(a) When learning to dive
(b) it is important
(c) to relax in between and take breaks.
(d) No error
Answer with full explanation — NDA 2021 (I) → Q: I have the opportunity to study in America next year.
(a) I have the opportunity
(b) to study
(c) in America next year.
(d) No error
Answer with full explanation — NDA 2021 (I) → Q: There was a time when West Germany was a distinct _________.
(a) policy
(b) polity
(c) abstract
(d) hierarchy
Answer with full explanation — NDA 2021 (I) → Q: I was ________ with the film; I had expected it to be better.
(a) disappointed
(b) disappointing
(c) annoying
(d) prejudiced
Answer with full explanation — NDA 2021 (I) → Q: It was a ________ experience. Everybody was shocked.
(a) terrified
(b) horrified
(c) terrifying
(d) denouncing
Answer with full explanation — NDA 2021 (I) → Q: Elephants ________ when they perceive danger.
(a) trumpet
(b) frolic
(c) whine
(d) sing
Answer with full explanation — NDA 2021 (I) → Q: The first film on Tagore was such a success that now they are going to make a ________.
(a) serial
(b) sequence
(c) sequel
(d) sequential
Answer with full explanation — NDA 2021 (I) → Q: The United Nations had ________ 2020 as the International Year of Plant Health.
(a) ruled
(b) ordered
(c) foretold
(d) declared
Answer with full explanation — NDA 2021 (I) → Q: My brother is ________ punctual, but he is late today.
(a) normatively
(b) primarily
(c) normally
(d) basically
Answer with full explanation — NDA 2021 (I) → Q: My son is very ________; he trusts everyone.
(a) fallible
(b) gullible
(c) sensible
(d) credible
Answer with full explanation — NDA 2021 (I) → Q: Mahatma Gandhi was a lover of humanity and a ________ believer in the goodness of human nature.
(a) staunch
(b) powerful
(c) cheerful
(d) hopeful
Answer with full explanation — NDA 2021 (I) → Q: I wish I ________ her before we met.
(a) know
(b) have known
(c) knew
(d) known
Answer with full explanation — NDA 2021 (I) → Q: Consider the following statements about Light year:
1. Light year is a unit for measurement of very large distances.
2. Light year is a unit for measurement of very large time intervals.
3. Light year is a unit for measurement of intensity of light.
Which of the statements given above is/are correct?
(a) 1, 2 and 3
(b) 2 and 3 only
(c) 1 and 2 only
(d) 1 only
Answer with full explanation — NDA 2021 (I) → Q: Which one of the following regarding density of water at atmospheric pressure is correct?
(a) Density of water at 4°C is 1000 kg/m³.
(b) Density of water at 0°C is 1000 kg/m³.
(c) Density of water at 0°C is 100 kg/m³.
(d) Density of water at 4°C is 10 kg/m³.
Answer with full explanation — NDA 2021 (I) → Q: Which of the following pairs of physical phenomenon and the discoverer is/are correctly matched?
1. James Chadwick : Photoelectric effect
2. Albert Einstein : Neutron
3. Marie Curie : Radium
Select the correct answer using the code given below:
(a) 1, 2 and 3
(b) 1 and 2 only
(c) 2 and 3 only
(d) 3 only
Answer with full explanation — NDA 2021 (I) → Q: LED (a semi-conductor device) is an abbreviation that stands for
(a) Licence for Energy Detector.
(b) Light Energy Device.
(c) Light Emitting Diode.
(d) Lost Energy Detector.
Answer with full explanation — NDA 2021 (I) → Q: The statement "friction force is a contact force while magnetic force is a non-contact force" is
(a) always true.
(b) true only at 0°C.
(c) a false statement.
(d) either true or false depending upon the temperature of the surroundings.
Answer with full explanation — NDA 2021 (I) → Q: Which one of the following is the chemical formula of Hypobromous acid?
(a) HBrO₄
(b) HOBr
(c) HBr
(d) HBrO₃
Answer with full explanation — NDA 2021 (I) → Q: The composition of gases in exosphere is
(a) Helium and Hydrogen.
(b) Neon and Oxygen.
(c) Neon and Hydrogen.
(d) Helium and Neon.
Answer with full explanation — NDA 2021 (I) → Q: Which one of the following is not used as a raw material in the manufacture of glass?
(a) Soda
(b) Alumina
(c) Borax
(d) Gypsum
Show Answer Q: In electrolytic refining of copper, the electrolyte is a solution of
(a) acidified copper chloride.
(b) acidified copper sulphate.
(c) potassium chloride.
(d) sodium sulphate.
Answer with full explanation — NDA 2021 (I) → Q: Solder is an alloy of
(a) Cu and Sn.
(b) Fe and Zn.
(c) Pb and Sn.
(d) Ag and Zn.
Answer with full explanation — NDA 2021 (I) → Q: Which one of the following statements about dihydrogen (H₂) is not correct?
(a) H₂ is lighter than air and insoluble in water.
(b) H₂ is inert at room temperature due to high H–H bond dissociation enthalpy.
(c) H₂ reacts with alkali metals at high temperature to yield metal hydrides.
(d) A mixture of NO₂ and H₂ is known as Syngas.
Answer with full explanation — NDA 2021 (I) → Q: Which of the following sets of elements has the same valency?
(a) Na, Mg, Ca
(b) Na, Mg, Al
(c) Mg, Ca, K
(d) Mg, Ca, Ba
Answer with full explanation — NDA 2021 (I) → Q: Which one of the following is the lowest possible temperature?
(a) 0° Celsius
(b) –073° Celsius
(c) –173° Celsius
(d) –273° Celsius
Answer with full explanation — NDA 2021 (I) → Q: Numerically two thermometers, one in Fahrenheit scale and another in Celsius scale shall read same at
(a) –40°
(b) 0°
(c) –273°
(d) 100°
Answer with full explanation — NDA 2021 (I) → Q: The image we see in a plane mirror is
(a) real and thus can be photographed.
(b) virtual and nearer than the object.
(c) virtual and is laterally inverted.
(d) real but cannot be photographed.
Answer with full explanation — NDA 2021 (I) → Q: Which one of the following colours may be obtained by combining green and red colours?
(a) Blue
(b) Magenta
(c) Pink
(d) Yellow
Answer with full explanation — NDA 2021 (I) → Q: Which of the following are the primary colours of light?
(a) Yellow, Red and Green
(b) Blue, Red and Green
(c) Violet, Red and Yellow
(d) Indigo, Violet and Green
Answer with full explanation — NDA 2021 (I) → Q: According to the New Cartesian Sign Convention, which one of the following is correct in respect of the formula 1/f = 1/v + 1/u, where symbols have their usual meanings?
(a) It applies only to spherical mirrors.
(b) It applies only to spherical lenses.
(c) It applies to spherical mirrors as well as spherical lenses.
(d) It is an invalid formula.
Answer with full explanation — NDA 2021 (I) → Q: Movement of materials to different parts of cytoplasm and nucleus is generally carried out by
(a) Ribosomes.
(b) Mitochondria.
(c) Lysosomes.
(d) Endoplasmic reticulum.
Answer with full explanation — NDA 2021 (I) → Q: In mitochondria, ATP synthesizing chemical reactions take place in the
(a) Outer membrane.
(b) Matrix.
(c) Inner membrane.
(d) DNA of mitochondria.
Answer with full explanation — NDA 2021 (I) → Q: Squamous epithelial cells are found in the inner lining of
(a) Oesophagus.
(b) Small intestine.
(c) Ducts of salivary gland.
(d) Kidney.
Answer with full explanation — NDA 2021 (I) → Q: Transformation of meristematic cells into specific permanent tissues occurs by the process of
(a) Cell differentiation.
(b) Cell division.
(c) Cell multiplication.
(d) Cell regeneration.
Answer with full explanation — NDA 2021 (I) → Q: The gaseous product of a process in plants is a requirement for another vital process that releases energy. Given below are four combinations of the process and product. Identify the correct answer.
(a) Respiration and Nitric oxide
(b) Transpiration and Water vapour
(c) Photosynthesis and Oxygen
(d) Germination and Carbon dioxide
Answer with full explanation — NDA 2021 (I) → Q: In a dicot pot herb, vaseline/vegetable oil was applied on the upper surface of one leaf (Experimental leaf 1) and on the lower surface of another leaf (Experimental leaf 2). Vaseline/vegetable oil was not applied on the control leaf. The plant was deliberately not watered for several days. Which leaf will dry up last?
(a) Experimental leaf 1
(b) Experimental leaf 2
(c) Control leaf
(d) All the leaves will dry up simultaneously
Answer with full explanation — NDA 2021 (I) → Q: Which one of the following statements is not correct for light rays?
(a) Light travels at different speeds in different media.
(b) Light travels at almost 300 million metres per second in air.
(c) Light speeds down as it leaves a water surface and enters the air.
(d) Light speeds up as it leaves a glass surface and enters the air.
Answer with full explanation — NDA 2021 (I) → Q: A glass prism splits white light into different colours. This phenomenon is called dispersion of light by prism. Which one of the following statements is correct?
(a) Red light will deviate the most and it is because of the reflection of light.
(b) Violet light will deviate the most and it is because of the refraction of light.
(c) Red light will deviate the most and it is because of the refraction of light.
(d) Violet light will deviate the most and it is because of the reflection of light.
Answer with full explanation — NDA 2021 (I) → Q: A current of 1·0 A is drawn by a filament of an electric bulb for 10 minutes. The amount of electric charge that flows through the circuit is
(a) 0·1 C
(b) 10 C
(c) 600 C
(d) 800 C
Answer with full explanation — NDA 2021 (I) → Q: Which one of the following formulas does not represent electrical power?
Answer with full explanation — NDA 2021 (I) → Q: The sound created in a big hall persists because of the repeated reflections. The phenomenon is called
(a) Reverberation
(b) Dispersion
(c) Refraction
(d) Diffraction
Answer with full explanation — NDA 2021 (I) → Q: When light is scattered by a molecule and the frequency of the scattered light is changed, this phenomenon is called
(a) Rayleigh scattering
(b) Raman effect
(c) Photoelectric effect
(d) Rutherford scattering
Answer with full explanation — NDA 2021 (I) → Q: Which one of the following statements about the cleansing action of soap is not true?
(a) The oil and dirt gets collected in the centre of the micelle.
(b) Soap micelles scatter light.
(c) Soaps are ammonium salts of long chain carboxylic acids.
(d) Soap forms insoluble precipitates with the calcium and magnesium ions in hard water.
Answer with full explanation — NDA 2021 (I) → Q: Hydrogenation of vegetable oils using nickel catalyst is an example of
(a) Substitution reaction.
(b) Elimination reaction.
(c) Addition reaction.
(d) Free-radical polymerization.
Answer with full explanation — NDA 2021 (I) → Q: Which one of the following materials is not an allotrope of carbon?
(a) Diamond
(b) Graphene
(c) Fly ash
(d) Fullerene
Answer with full explanation — NDA 2021 (I) → Q: Which one of the following reactions does not result in the evolution of hydrogen gas?
(a) Reaction of zinc metal with dilute sulphuric acid solution
(b) Mixing water to Plaster of Paris
(c) Heating zinc metal with sodium hydroxide solution
(d) Reaction of potassium metal with water
Answer with full explanation — NDA 2021 (I) → Q: Which one of the following acids is predominantly found in tomatoes?
(a) Acetic acid
(b) Tartaric acid
(c) Oxalic acid
(d) Lactic acid
Answer with full explanation — NDA 2021 (I) → Q: Which one of the following conclusions could not be derived from Rutherford's α-particle scattering experiment?
(a) Most of the space in the atom is empty.
(b) The radius of the atom is about 10⁵ times the radius of the nucleus.
(c) Electrons move in a circular path of fixed energy called orbits.
(d) Nearly all the mass of the atom resides in the nucleus.
Answer with full explanation — NDA 2021 (I) → Q: Reaction of quick lime (CaO) with water to produce slaked lime (Ca(OH)₂) is an example of
(a) Displacement reaction.
(b) Endothermic reaction.
(c) Decomposition reaction.
(d) Exothermic reaction.
Answer with full explanation — NDA 2021 (I) → Q: Which one of the following is not a bio-mass energy source?
(a) Wood
(b) Nuclear reactor
(c) Gobar gas
(d) Coal
Answer with full explanation — NDA 2021 (I) → Q: Twinkling of stars is due to
(a) particular frequencies of the starlight.
(b) reflection of starlight from the oceanic surface.
(c) atmospheric refraction of starlight.
(d) magnetic field of Earth.
Answer with full explanation — NDA 2021 (I) → Q: Which one of the following cannot be the unit of frequency of a sound wave?
Answer with full explanation — NDA 2021 (I) → Q: 'Beats' is a phenomenon that occurs when frequencies of two harmonic waves are
(a) equal.
(b) far apart.
(c) multiples of each other.
(d) nearly same.
Answer with full explanation — NDA 2021 (I) → Q: Light waves are incident on an air-glass boundary. Some of the light waves are reflected and some are refracted in the glass. Which one of the following properties is the same for the incident wave and the refracted wave?
(a) Speed
(b) Direction
(c) Brightness
(d) Frequency
Answer with full explanation — NDA 2021 (I) → Q: Which one of the following statements is true for a simple harmonic oscillator?
(a) Force acting is directly proportional to the displacement from the mean position and is in same direction.
(b) Force acting is directly proportional to the displacement from the mean position and is in opposite direction.
(c) Acceleration of the oscillator is constant.
(d) The velocity of the oscillator is not periodic.
Answer with full explanation — NDA 2021 (I) → Q: During seed germination, the part of the embryo which grows into root is
(a) Radicle.
(b) Plumule.
(c) Cotyledon.
(d) Epicotyl.
Answer with full explanation — NDA 2021 (I) → Q: In a typical flower, germinating pollen grains pass through several parts of the gynoecium before they reach the ovule. A list of the parts of gynoecium is given below in different combinations. Choose the combination that represents the correct sequence of pollen tube pathway/journey:
(a) Style, Stigma, Ovary
(b) Stigma, Style, Ovary
(c) Pistil, Stigma, Ovary
(d) Ovary, Pistil, Style
Answer with full explanation — NDA 2021 (I) → Q: If human blood is placed in a 2% detergent solution, what will happen to the RBC?
(a) The RBC will shrink.
(b) The RBC will swell and become turgid.
(c) The RBC will swell and burst.
(d) The RBC will lyse.
Answer with full explanation — NDA 2021 (I) → Q: The major source of vitamins and minerals for vegetarians is
(a) black gram and wheat.
(b) rice and mustard.
(c) vegetables and fruits.
(d) soya bean and milk.
Answer with full explanation — NDA 2021 (I) → Q: If a ray of light enters from a rarer medium to a denser medium at zero angle of incidence, it would
(a) reflect back.
(b) go straight.
(c) turn towards right.
(d) bend at 45°.
Answer with full explanation — NDA 2021 (I) → Q: Mirage is an illustration of
(a) only dispersion of light.
(b) only reflection of light.
(c) only total internal reflection of light.
(d) both refraction and total internal reflection of light.
Answer with full explanation — NDA 2021 (I) → Q: Common salt (NaCl) is not used as a raw material for preparation of which one of the following compounds?
(a) Bleaching powder
(b) Baking soda
(c) Plaster of Paris
(d) Washing soda
Answer with full explanation — NDA 2021 (I) → Q: Which one of the following Harappan sites was a specialised centre for making shell objects?
(a) Lothal
(b) Balakot
(c) Amri
(d) Kot Diji
Answer with full explanation — NDA 2021 (I) → Q: Which one of the following was not a part of the dhamma of King Ashoka?
(a) Honouring the king
(b) Tolerance of religions other than one's own
(c) Respecting Brahmanas
(d) Promoting the welfare of his subjects
Answer with full explanation — NDA 2021 (I) → Q: Which of the following statements about Saguna bhakti traditions is/are correct?
1. Saguna bhakti traditions focus on the worship of specific deities such as Vishnu or his avatars.
2. In Saguna bhakti traditions, Gods and Goddesses are conceptualised in anthropomorphic forms.
Select the correct answer using the code given below:
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Answer with full explanation — NDA 2021 (I) → Q: At which one of the following places was a Shiva temple not constructed under the patronage of the Chola rulers?
(a) Chidambaram
(b) Thanjavur
(c) Gangaikonda Cholapuram
(d) Naneghat
Answer with full explanation — NDA 2021 (I) → Q: Which of the following statements about the Deccan Riots Commission is/are correct?
1. The Commission did not hold enquiries in the districts which were not affected.
2. The Commission did record the statements of ryots, sahukars and eye-witnesses.
Select the correct answer using the code given below:
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Answer with full explanation — NDA 2021 (I) → Q: Which one of the following is the correct meaning of ziyarat?
(a) Pilgrimage to the tombs of sufi saints
(b) The practice of revenue farming
(c) The death anniversary of a sufi shaikh
(d) A form of Islamic divorce
Answer with full explanation — NDA 2021 (I) → Q: Keppel Island is completely bleached mainly due to the expansion of
(a) Starfish
(b) Blue whale
(c) Octopus
(d) Sea horse
Answer with full explanation — NDA 2021 (I) → Q: Which one of the following rivers is not a tributary of river Brahmaputra?
(a) River Manas
(b) River Kameng
(c) River Mahananda
(d) River Subansiri
Answer with full explanation — NDA 2021 (I) → Q: Which one of the following is not a minor plate?
(a) Cocos Plate
(b) Nazca Plate
(c) Caroline Plate
(d) Antarctic Plate
Answer with full explanation — NDA 2021 (I) → Q: Advantage(s) of tectonic activity in Iceland include(s):
1. Source of natural geothermal energy
2. Creation of new land
3. Attraction of tourists
Select the correct answer using the code given below:
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
Answer with full explanation — NDA 2021 (I) → Q: The process whereby certain minerals absorb water, expand and change is called as
(a) Hydration.
(b) Oxidation.
(c) Hydrolysis.
(d) Carbonation.
Answer with full explanation — NDA 2021 (I) → Q: Which one of the following is the longest Latitude?
(a) 90 degree Latitude
(b) 23.5 degree Latitude
(c) 0.0 degree Latitude
(d) 66.5 degree Latitude
Answer with full explanation — NDA 2021 (I) → Q: If it is 12.00 Noon in India, on which meridian will it be 7.00 am of the same day?
(a) 7.5 degree E. Longitude
(b) 7.5 degree W. Longitude
(c) 75 degree E. Longitude
(d) 75 degree W. Longitude
Answer with full explanation — NDA 2021 (I) → Q: Who among the following was considered to be the preceptor of Mirabai?
(a) Dadu
(b) Raidas
(c) Ramanand
(d) Surdas
Answer with full explanation — NDA 2021 (I) → Q: Consider the following statements about the Mahanavami Dibba:
1. It was the name of a giant box of sweets distributed at the Mahanavami festival.
2. It was the name of a massive platform with a base covered with relief carvings.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Answer with full explanation — NDA 2021 (I) → Q: Which one of the following statements about the Ain-i-Akbari is not correct?
(a) It was written by Abu'l Fazl.
(b) It is a part of a larger work called Akbar Nama.
(c) It describes the Mughal Empire as having a diverse population and a composite culture.
(d) It was later revised by Sadullah Khan on the orders of Shah Jahan.
Answer with full explanation — NDA 2021 (I) → Q: Swami Dayanand Saraswati
1. was opposed to the worship of idols of Gods and Goddesses.
2. regarded the Vedas as infallible.
3. had met and had discussions with Ishwar Chandra Vidyasagar.
Which of the statements given above are correct?
(a) 1, 2 and 3
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1 and 2 only
Answer with full explanation — NDA 2021 (I) → Q: Consider the following statements:
1. Muhammadan Anglo-Oriental College was founded at Aligarh by Sayyid Ahmad Khan.
2. Sayyid Ahmad Khan was a great believer in religious toleration, and Hindus, Parsis and Christians had contributed to the funds of his college.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Answer with full explanation — NDA 2021 (I) → Q: Basket-of-eggs topography is related to
(a) Drumlins.
(b) Eskers.
(c) Cirques.
(d) Moraines.
Answer with full explanation — NDA 2021 (I) → Q: Which one of the following planets has the highest density?
(a) Mercury
(b) Venus
(c) Jupiter
(d) Earth
Answer with full explanation — NDA 2021 (I) → Q: Point of Origin of Earthquake Wave is known as
(a) Epicentre
(b) Focus
(c) Photosphere
(d) Seismic Zone
Answer with full explanation — NDA 2021 (I) → Q: The maximum depth of Lithosphere is found in the
(a) Pacific Ocean.
(b) Siberian Plain.
(c) Patagonian Desert.
(d) Himalayan Mountains.
Answer with full explanation — NDA 2021 (I) → Q: A large body of magmatic material that cools in the deeper depth of the Earth's crust and develops in the form of large domes is known as
(a) Batholiths.
(b) Lacoliths.
(c) Lopoliths.
(d) Phacoliths.
Answer with full explanation — NDA 2021 (I) → Q: Which one of the following Oil Refineries is not located in Assam?
(a) Tatipaka
(b) Numaligarh
(c) Bongaigaon
(d) Digboi
Answer with full explanation — NDA 2021 (I) → Q: Where and when did Mahatma Gandhi make his first public appearance in India on coming back from South Africa after two decades?
(a) Champaran in 1917
(b) Lucknow in 1916
(c) Banaras Hindu University in 1916
(d) Ahmedabad in 1918
Answer with full explanation — NDA 2021 (I) → Q: When and where was the demand for "Purna Swaraj" or complete independence made by the Indian National Congress?
(a) Bombay, 1885
(b) Lahore, 1929
(c) Kheda, 1917
(d) Bombay, 1942
Answer with full explanation — NDA 2021 (I) → Q: Which one of the following provides for the complete equality of men and women in India?
(a) Articles 14 and 15 of the Constitution of India
(b) Fifth Schedule of the Constitution of India
(c) The Indian Independence Act
(d) Article 20 of the Constitution of India
Answer with full explanation — NDA 2021 (I) → Q: Which of the following statements about the non-permanent members of the Security Council of the United Nations is/are correct?
1. Their total number is now 10, but was originally only 6.
2. They are elected for a term of two years only.
Select the correct answer using the code given below:
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Answer with full explanation — NDA 2021 (I) → Q: At which of the following was the American Declaration of Independence adopted on 4 July, 1776?
(a) Washington Conference
(b) San Francisco Conference
(c) Second Continental Congress
(d) First Continental Congress
Answer with full explanation — NDA 2021 (I) → Q: Who among the following was the head of the Government that was overthrown by the Bolsheviks in the 1917 Revolution?
(a) Alexander Kerensky
(b) Prince Lvov
(c) Grand Duke Sergei
(d) Tsar Nicholas II
Answer with full explanation — NDA 2021 (I) → Q: Which one of the following is not a form of condensation?
(a) Dew
(b) Fog
(c) Frost
(d) Sleet
Answer with full explanation — NDA 2021 (I) → Q: Which one of the following clouds is a rain-bearing cloud?
(a) Cumulus cloud
(b) Stratus cloud
(c) Nimbus cloud
(d) Cirrus cloud
Answer with full explanation — NDA 2021 (I) → Q: In which one of the following countries is intensive subsistence agriculture not predominantly practised?
(a) India
(b) Japan
(c) Canada
(d) Indonesia
Answer with full explanation — NDA 2021 (I) → Q: The Headquarters of South-Eastern Railway is located at
(a) Bilaspur.
(b) Secunderabad.
(c) Kolkata.
(d) Bhubaneswar.
Answer with full explanation — NDA 2021 (I) → Q: Bharatamala Pariyojana is related to
(a) interlinking of Northern and Southern Indian rivers in a garland shape.
(b) networks of National Highways in India.
(c) interlinking of all cities of India through Railways.
(d) interlinking of all industrial regions of India through pipelines.
Answer with full explanation — NDA 2021 (I) → Q: The natural vegetation which covers the maximum geographical areas of India is
(a) Tropical deciduous forests
(b) Tropical thorn forests
(c) Montane forests
(d) Tropical evergreen forests
Answer with full explanation — NDA 2021 (I) → Q: River Beas, flowing from Himachal and Punjab, joins the river
(a) Indus
(b) Satluj
(c) Chenab
(d) Ravi
Answer with full explanation — NDA 2021 (I) → Q: With regard to the Constitution of India, which one of the following statements is not correct?
(a) The words — Socialist and Secular, were not originally part of the Constitution
(b) The Preamble states the objects of the Constitution of India
(c) The Preamble is enforceable in a Court of Law
(d) A Republic refers to the people as the source of all authority under the Constitution
Answer with full explanation — NDA 2021 (I) → Q: Which one of the following is not a power of the Speaker of the Lok Sabha?
(a) Speaker shall preside over the House of the People
(b) Speaker will cast vote in the first instance in the House
(c) Speaker will have power to maintain order within the House of the People
(d) Speaker can adjourn the House or suspend the meeting till there is a quorum
Answer with full explanation — NDA 2021 (I) → Q: Which one of the following is included in Article 51A (Part IV A) of the Constitution of India?
(a) Fundamental Duties
(b) Suspension of Fundamental Rights
(c) Special Powers of Governors
(d) Writs
Answer with full explanation — NDA 2021 (I) → Q: As per the data up to November, 2020, released by the Union Finance Ministry, which one of the following countries ranks 1 in terms of ODI (Outward Direct Investment) for the year 2020–21?
(a) USA
(b) Singapore
(c) Mauritius
(d) United Kingdom
Answer with full explanation — NDA 2021 (I) → Q: 'Exercise Desert Knight – 21' is a bilateral air exercise between the Indian Air Force and the Air Force of which one of the following countries?
(a) USA
(b) France
(c) Britain
(d) Israel
Answer with full explanation — NDA 2021 (I) → Q: Tableau of which one of the following States/Union Territory was adjudged best in the Republic Day Parade, 2021?
(a) Ladakh
(b) Uttar Pradesh
(c) Tripura
(d) Uttarakhand
Answer with full explanation — NDA 2021 (I) → Q: In the recently concluded elections in December 2020, Faustin-Archange Touadéra has won a second term in office as President of one of the following countries. Identify the country.
(a) Central African Republic
(b) Republic of South Africa
(c) Republic of Ghana
(d) Republic of Mozambique
Answer with full explanation — NDA 2021 (I) → Q: Which one of the following statements is not correct in respect of the ‘Legion of Merit’ award?
(a) This award is conferred by the President of the United States of America
(b) This award was conferred to the Prime Minister of India in December, 2020
(c) This was also awarded to the Prime Minister of Australia, Scott Morrison
(d) It is the highest civilian award of the United States of America
Answer with full explanation — NDA 2021 (I) → Q: Which one of the following statements is most appropriate about ‘Exercise Kavach’?
(a) It is a military exercise of the Indian Army only
(b) It is a joint military exercise involving the Indian Army and the Indian Navy only
(c) It is a joint military exercise involving the Indian Army, the Indian Navy and the Indian Air Force only
(d) It is a joint military exercise involving the Indian Army, the Indian Navy, the Indian Air Force and also the Indian Coast Guard
Answer with full explanation — NDA 2021 (I) → Q: Recently a state of emergency has been declared in which one of the following countries?
(a) Maldives
(b) Bhutan
(c) Nepal
(d) Myanmar
Answer with full explanation — NDA 2021 (I) → Q: Which one of the following teams is the winner of the Syed Mushtaq Ali Trophy, 2021?
(a) Uttar Pradesh
(b) Punjab
(c) Tamil Nadu
(d) Baroda
Answer with full explanation — NDA 2021 (I) → Q: Which country has replaced Maldives to host the 2023 Indian Ocean Island Games?
(a) Madagascar
(b) Sri Lanka
(c) India
(d) Mauritius
Answer with full explanation — NDA 2021 (I) → Q: Identify the correct reason, out of the following, about Claire Polosak for being in the news:
(a) She has been honoured with the Pulitzer Prize
(b) She recently won a Grand Slam championship
(c) She became the first female match official to conduct a men's cricket test match
(d) She has been conferred with the Gandhi Peace Prize
Answer with full explanation — NDA 2021 (I) → 