Q: He nodded absently throughout the meeting.
(a) capably
(b) alertly
(c) agitatedly
(d) dreamily
Answer with full explanation — NDA 2020 (I & II) → Q: I fully believe that the cornerstone of good policy is an electorate that is educated on the national issues.
(a) cerebral
(b) enlightened
(c) ignorant
(d) erudite
Answer with full explanation — NDA 2020 (I & II) → Q: For important medical decisions, even finding a doctor you trust is not enough.
(a) significant
(b) trivial
(c) basic
(d) probable
Answer with full explanation — NDA 2020 (I & II) → Q: Planets move in their orbits.
(a) push
(b) rotate
(c) stall
(d) flow
Answer with full explanation — NDA 2020 (I & II) → Q: Temperature is a measure of internal energy of an object and is frequently expressed by physicists in units of Kelvin.
(a) found
(b) told
(c) distributed
(d) concealed
Answer with full explanation — NDA 2020 (I & II) → Q: People argue about why Venus is so much warmer than the Earth.
(a) friendlier
(b) colder
(c) wilder
(d) heavier
Answer with full explanation — NDA 2020 (I & II) → Q: Scientists are concerned whether the oceans and land biosphere will take up as much carbon in the future as they presently do.
(a) worried
(b) indifferent
(c) curious
(d) puzzled
Answer with full explanation — NDA 2020 (I & II) → Q: The biggest debate among scientists today is about cloud feedback.
(a) contend
(b) moot
(c) wrangle
(d) agreement
Answer with full explanation — NDA 2020 (I & II) → Q: The Earth's climate sensitivity is conventionally defined as the equilibrium temperature increase caused by a doubling of carbon dioxide.
(a) imperviousness
(b) willingness
(c) responsiveness
(d) closeness
Answer with full explanation — NDA 2020 (I & II) → Q: The oceans carry a huge amount of heat from the tropics to the high latitudes.
(a) significant
(b) major
(c) tiny
(d) dormant
Answer with full explanation — NDA 2020 (I & II) → Q: several years ago, (P) / course on climate change at Texas A&M University (Q) / Professor Andrew Dessler created an introductory (R) / for freshmen and sophomores (S)
(a) P R Q S
(b) Q R P S
(c) S Q R P
(d) P Q R S
Answer with full explanation — NDA 2020 (I & II) → Q: I realize that solving the climate change problem (P) / than solving (Q) / will be much harder (R) / the ozone depletion problem (S)
(a) P R Q S
(b) Q R P S
(c) S Q R P
(d) P Q R S
Answer with full explanation — NDA 2020 (I & II) → Q: although the temperature of this layer of the (P) / when directly comparing the satellite (Q) / measurements of temperature (R) / atmosphere should generally track the surface temperature, we must be careful (S)
(a) P R Q S
(b) P S Q R
(c) S Q R P
(d) P Q R S
Answer with full explanation — NDA 2020 (I & II) → Q: the element heats up, (P) / eventually reaching high temperatures (Q) / glowing like a dark orange that radiates (R) / the visible range, (S)
(a) P Q S R
(b) Q P S R
(c) S Q R P
(d) P R S Q
Answer with full explanation — NDA 2020 (I & II) → Q: two people argue about why Venus is so much warmer
P to the Sun, so it absorbs more solar energy. The second argues
Q that it's because Venus has a thick, greenhouse-gas rich atmosphere
R than the Earth. The first argues that it's because Venus is closer
S
(a) P S Q R
(b) Q R P S
(c) S Q R P
(d) P Q R S
Answer with full explanation — NDA 2020 (I & II) → Q: are now used by more than a thousand firms P and are growing in popularity Q in the United States and Europe R gain sharing-plans S
(a) P R Q S
(b) Q R P S
(c) P R S Q
(d) S P R Q
Answer with full explanation — NDA 2020 (I & II) → Q: adversity without succumbing P to the clouds of doubt and jealousy Q between friends which is subjected to both prosperity and R the essay ‘Of Friendship’ by Francis Bacon celebrated the intimacy S
(a) P R Q S
(b) Q R P S
(c) S R P Q
(d) P Q R S
Answer with full explanation — NDA 2020 (I & II) → Q: friends without which the world is P make friends and a person wills to want true Q it is miserable solitude that compels a person to R nothing other than a place of wilderness S
(a) P R Q S
(b) Q R P S
(c) R Q P S
(d) P Q R S
Answer with full explanation — NDA 2020 (I & II) → Q: takes the longest P that never started Q the job R to finish S
(a) P R Q S
(b) R Q P S
(c) S Q R P
(d) P Q R S
Answer with full explanation — NDA 2020 (I & II) → Q: to what you can create P control, shift your energy Q instead of worrying about R what you cannot S
(a) P R S Q
(b) Q R S P
(c) S Q R P
(d) R S Q P
Answer with full explanation — NDA 2020 (I & II) → Q: She got the divorce within no time.
(a) detachment
(b) breaking down
(c) annulment
(d) punishment
Answer with full explanation — NDA 2020 (I & II) → Q: He was known for his gentle disposition.
(a) harmful
(b) amiable
(c) cunning
(d) adjusting
Answer with full explanation — NDA 2020 (I & II) → Q: The harder we kick, the better the ball bounces back.
(a) recoils
(b) deflates
(c) inflates
(d) ascends
Answer with full explanation — NDA 2020 (I & II) → Q: I plan and execute.
(a) desire
(b) debate
(c) accomplish
(d) discard
Answer with full explanation — NDA 2020 (I & II) → Q: He listened to me with equanimity.
(a) carelessly
(b) excitedly
(c) patiently
(d) half-heartedly
Answer with full explanation — NDA 2020 (I & II) → Q: The whole thing was a futile exercise.
(a) costly
(b) pointless
(c) indecisive
(d) successful
Answer with full explanation — NDA 2020 (I & II) → Q: He was too cunning for her.
(a) capable
(b) fit
(c) intelligent
(d) dodgy
Answer with full explanation — NDA 2020 (I & II) → Q: This decision is crucial for me.
(a) momentous
(b) natural
(c) primitive
(d) inept
Answer with full explanation — NDA 2020 (I & II) → Q: The media went into a frenzy about the case.
(a) silent
(b) creative
(c) berserk
(d) wrong
Answer with full explanation — NDA 2020 (I & II) → Q: He has been yearning to go home.
(a) declining
(b) demanding
(c) begging
(d) hankering
Answer with full explanation — NDA 2020 (I & II) → Q: Simulations of the 20th century by climate models that exclude the observed increase ____ greenhouse gases fail to simulate the increase in temperature over the second half of the 20th century.
Answer with full explanation — NDA 2020 (I & II) → Q: In extremely poor societies, children can be put to work ____ a young age and are therefore a source of income.
Answer with full explanation — NDA 2020 (I & II) → Q: People who are averse ____ hard work, generally do not succeed in life.
Answer with full explanation — NDA 2020 (I & II) → Q: I have known her ____ a long time.
(a) since
(b) for
(c) at
(d) before
Answer with full explanation — NDA 2020 (I & II) → Q: I accepted the offer ____ certain conditions.
Answer with full explanation — NDA 2020 (I & II) → Q: She is a woman ____ humble origin.
(a) off
(b) of
(c) from
(d) within
Answer with full explanation — NDA 2020 (I & II) → Q: There is no cure ____ the common cold.
Answer with full explanation — NDA 2020 (I & II) → Q: I ran ____ John yesterday, and it was a pleasant surprise.
(a) by
(b) off
(c) beside
(d) into
Answer with full explanation — NDA 2020 (I & II) → Q: My grandmother enjoyed boating ____ the lovely lake.
(a) in
(b) on
(c) beside
(d) within
Answer with full explanation — NDA 2020 (I & II) → Q: He visits the needy to relieve them ____ their sufferings and poverty.
Answer with full explanation — NDA 2020 (I & II) → Q: This building comprises of six houses, three parking lots and one basement.
(a) Error in the first underlined part
(b) Error in the second underlined part
(c) Error in the third underlined part
(d) No error
Answer with full explanation — NDA 2020 (I & II) → Q: I look forward to meet you.
(a) Error in the first underlined part
(b) Error in the second underlined part
(c) Error in the third underlined part
(d) No error
Answer with full explanation — NDA 2020 (I & II) → Q: I cannot cope up with this pressure.
(a) Error in the first underlined part
(b) Error in the second underlined part
(c) Error in the third underlined part
(d) No error
Answer with full explanation — NDA 2020 (I & II) → Q: I came to this place by walk.
(a) Error in the first underlined part
(b) Error in the second underlined part
(c) Error in the third underlined part
(d) No error
Answer with full explanation — NDA 2020 (I & II) → Q: What is the time in your watch?
(a) Error in the first underlined part
(b) Error in the second underlined part
(c) Error in the third underlined part
(d) No error
Answer with full explanation — NDA 2020 (I & II) → Q: The price of my dress is higher than that of yours.
(a) Error in the first underlined part
(b) Error in the second underlined part
(c) Error in the third underlined part
(d) No error
Answer with full explanation — NDA 2020 (I & II) → Q: My friend's daughter-in-laws have come.
(a) Error in the first underlined part
(b) Error in the second underlined part
(c) Error in the third underlined part
(d) No error
Answer with full explanation — NDA 2020 (I & II) → Q: I prefer seafood than Mediterranean food.
(a) Error in the first underlined part
(b) Error in the second underlined part
(c) Error in the third underlined part
(d) No error
Answer with full explanation — NDA 2020 (I & II) → Q: We were discussing about the issue.
(a) Error in the first underlined part
(b) Error in the second underlined part
(c) Error in the third underlined part
(d) No error
Answer with full explanation — NDA 2020 (I & II) → Q: Dispose off the garbage from the shelves.
(a) Error in the first underlined part
(b) Error in the second underlined part
(c) Error in the third underlined part
(d) No error
Answer with full explanation — NDA 2020 (I & II) → Q: New Zealand is considered part of which one of the following island groups?
(a) Micronesia
(b) Melanesia
(c) Polynesia
(d) Hawaii Island chain
Answer with full explanation — NDA 2020 (I & II) → Q: Which of the following statements with regard to Pradhan Mantri Krishi Sinchayee Yojana (PMKSY) is/are correct?
1. PMKSY was launched during 2015-16
2. The basic aim of PMKSY is to enhance physical access of water on farm
3. One of the main objectives of PMKSY is to achieve convergence of investments in irrigation at the field level
Select the correct answer using the code given below:
(a) 1 only
(b) 1 and 2 only
(c) 2 and 3 only
(d) 1, 2 and 3
Answer with full explanation — NDA 2020 (I & II) → Q: According to Article 79 of the Constitution of India, which of the following is/are described as a part of Parliament of India?
1. The House of the People
2. The Council of States
3. The President of India
Select the correct answer using the code given below:
(a) 1 only
(b) 1 and 2 only
(c) 2 and 3 only
(d) 1, 2 and 3
Answer with full explanation — NDA 2020 (I & II) → Q: The Five Year Plan was first launched in
(a) China
(b) USSR
(c) India
(d) Bhutan
Answer with full explanation — NDA 2020 (I & II) → Q: The call for Garibi Hatao was incorporated in
(a) Fourth Five Year Plan
(b) Fifth Five Year Plan
(c) Sixth Five Year Plan
(d) Seventh Five Year Plan
Answer with full explanation — NDA 2020 (I & II) → Q: Match List I with List II and select the correct answer using the code given below the lists:
List I (Major Objective)
A. Faster and more inclusive growth
B. Faster, more inclusive and sustainable growth
C. Correction of disequilibrium caused by Second World War
D. Attaining self-reliance
List II (Five Year Plan)
1. First
2. Fifth
3. Eleventh
4. Twelfth
Code:
(a) 3, 1, 4, 2
(b) 3, 4, 1, 2
(c) 2, 4, 1, 3
(d) 2, 1, 4, 3
Answer with full explanation — NDA 2020 (I & II) → Q: Which one of the following Directive Principles was inserted by the Constitution (42nd Amendment) Act, 1976?
(a) The State shall minimise inequalities in income
(b) Equal justice and free legal aid
(c) Promotion of co-operative societies
(d) Provision for early childhood care
Answer with full explanation — NDA 2020 (I & II) → Q: A common High Court for two or more states can be established by
(a) a law passed by the Parliament
(b) an order of the Supreme Court of India
(c) an order of the President of India
(d) an amendment to the Constitution of India
Answer with full explanation — NDA 2020 (I & II) → Q: In the year 1928, a committee of Congress leaders drafted a Constitution for India. The Committee was headed by
(a) Mahatma Gandhi
(b) T. B. Sapru
(c) Motilal Nehru
(d) Jawaharlal Nehru
Answer with full explanation — NDA 2020 (I & II) → Q: Which one of the following statements about Jaipal Singh is NOT correct?
(a) He was a member of the Constituent Assembly
(b) He founded the Adivasi Maha Sabha
(c) He was the captain of the first Indian national hockey team
(d) He campaigned for a separate state of Chhattisgarh
Answer with full explanation — NDA 2020 (I & II) → Q: What is 'Tikki Mausi' in the context of Malnutrition?
(a) A specially packaged food item
(b) A mascot
(c) Name of a scheme
(d) Name given to the healthcare providers
Answer with full explanation — NDA 2020 (I & II) → Q: Which one of the following was the theme of the World Tourism Day, 2019?
(a) Sustainable tourism
(b) Tourism and the digital transformation
(c) Tourism: responding to the challenge of climate change
(d) Tourism and jobs: a better future for all
Answer with full explanation — NDA 2020 (I & II) → Q: Which one of the following countries has hosted the Army Exercise TSENTR, 2019?
(a) Russia
(b) China
(c) Kazakhstan
(d) Kyrgyzstan
Answer with full explanation — NDA 2020 (I & II) → Q: Which one of the following countries is called the 'country of winds'?
(a) India
(b) China
(c) Denmark
(d) Germany
Answer with full explanation — NDA 2020 (I & II) → Q: Which one of the following is the oldest scientific department of Government of India?
(a) Department of Biotechnology
(b) Survey of India
(c) India Meteorological Department
(d) DRDO
Answer with full explanation — NDA 2020 (I & II) → Q: 'Naseem-Al-Bahr' is a bilateral naval exercise between India and
(a) United Arab Emirates
(b) Iran
(c) Saudi Arabia
(d) Oman
Answer with full explanation — NDA 2020 (I & II) → Q: Koneru Humpy excels in which one of the following sports?
(a) Boxing
(b) Table Tennis
(c) Chess
(d) Billiards
Answer with full explanation — NDA 2020 (I & II) → Q: Which one of the following was the official mascot of Khelo India Youth Games, 2020?
(a) Vijaya
(b) Yaya
(c) Rongmon
(d) Ammu
Answer with full explanation — NDA 2020 (I & II) → Q: In January 2020, a passenger aircraft crashed in Iran soon after taking off from Tehran's Imam Khomeini airport killing about 170 people onboard. The airplane belongs to
(a) Qatar Airways
(b) Ukraine International Airlines
(c) Singapore Airlines
(d) Cathay Pacific
Answer with full explanation — NDA 2020 (I & II) → Q: MILAN, a multilateral naval exercise, 2020 was hosted by which one of the following cities?
(a) Port Blair
(b) Kochi
(c) Visakhapatnam
(d) Panaji
Show Answer Q: Chalk and marble are different forms of
(a) Calcium hydrogen carbonate
(b) Calcium carbonate
(c) Calcium acetate
(d) Sodium carbonate
Answer with full explanation — NDA 2020 (I & II) → Q: The number of maximum electrons in N Shell is
Answer with full explanation — NDA 2020 (I & II) → Q: Vinegar is also known as
(a) ethanoic acid
(b) nitric acid
(c) sulphuric acid
(d) tartaric acid
Answer with full explanation — NDA 2020 (I & II) → Q: A liquid is kept in a glass beaker. Which one of the following statements is correct regarding the pressure exerted by the liquid column at the base of the beaker?
(a) The pressure depends on the area of the base of the beaker
(b) The pressure depends on the height of liquid column
(c) The pressure does not depend on the density of the liquid
(d) The pressure neither depends on the area of the base of the beaker nor on the height of liquid column
Answer with full explanation — NDA 2020 (I & II) → Q: Which of the following statements is NOT correct regarding the travel of sound waves?
(a) Sound waves can travel through water
(b) Sound waves can travel through air
(c) Sound waves can travel through steel
(d) Sound waves can travel through vacuum
Answer with full explanation — NDA 2020 (I & II) → Q: Deendayal Port is located at
(a) Kerala
(b) Gujarat
(c) Maharashtra
(d) Goa
Answer with full explanation — NDA 2020 (I & II) → Q: Which one of the following cities is associated with Biosafety Protocol to the Convention on Biological Diversity (2000)?
(a) Geneva
(b) Nairobi
(c) Cartagena
(d) Rio de Janeiro
Answer with full explanation — NDA 2020 (I & II) → Q: Krishna Raja Sagara Dam/Reservoir is developed on
(a) river Krishna
(b) river Tungabhadra
(c) river Godavari
(d) river Kavery
Answer with full explanation — NDA 2020 (I & II) → Q: Which one of the following Indian states does NOT share international border with two or more countries?
(a) Arunachal Pradesh
(b) Assam
(c) Mizoram
(d) Tripura
Answer with full explanation — NDA 2020 (I & II) → Q: According to Census of India, 2011, which one among the following is the least populated state in India?
(a) Maharashtra
(b) Madhya Pradesh
(c) Odisha
(d) Punjab
Answer with full explanation — NDA 2020 (I & II) → Q: The speakers of major Indian languages belong to how many language families?
(a) Two
(b) Three
(c) Four
(d) Six
Answer with full explanation — NDA 2020 (I & II) → Q: Where did Gandhiji initially forge the techniques of Satyagraha?
(a) England
(b) South Africa
(c) North Africa
(d) India
Answer with full explanation — NDA 2020 (I & II) → Q: Who was the Viceroy of India at the time of Gandhiji's Dandi march?
(a) Lord Irwin
(b) Lord Linlithgow
(c) Lord Reading
(d) Lord Willingdon
Answer with full explanation — NDA 2020 (I & II) → Q: Which one among the following American newsmagazines was highly sceptical of Gandhiji's Dandi march initially but within a week completely changed its opinion and saluted him as a Saint and Statesman?
(a) Saturday Evening Post
(b) Readers Digest
(c) Time
(d) Life
Answer with full explanation — NDA 2020 (I & II) → Q: In which of the following years were passenger trains introduced in England?
(a) 1823
(b) 1825
(c) 1848
(d) 1861
Answer with full explanation — NDA 2020 (I & II) → Q: The correct relation between the radius of curvature R and focal length f of a spherical mirror is
(a) R = f
(b) R = 2f
(c) R = 3f
(d) R = 4f
Answer with full explanation — NDA 2020 (I & II) → Q: A lemon kept in water in a glass tumbler appears to be larger than its actual size. It is because of
(a) reflection of light
(b) scattering of light
(c) refraction of light
(d) polarization of light
Answer with full explanation — NDA 2020 (I & II) → Q: Light enters the eye through a thin membrane called
(a) retina
(b) cornea
(c) pupil
(d) iris
Answer with full explanation — NDA 2020 (I & II) → Q: Name the scientist who first used a glass prism to obtain the spectrum of sunlight
(a) C. V. Raman
(b) Lord Rayleigh
(c) Isaac Newton
(d) S. Chandrasekhar
Answer with full explanation — NDA 2020 (I & II) → Q: The cost of energy to operate an industrial refrigerator that consumes 5 kW power working 10 hours per day for 30 days will be (Given that the charge per kWh of energy = ₹ 4)
(a) ₹ 600
(b) ₹ 6,000
(c) ₹ 1,200
(d) ₹ 1,500
Answer with full explanation — NDA 2020 (I & II) → Q: Which one of the following statements regarding magnetic field is NOT correct ?
(a) Magnetic field is a quantity that has direction and magnitude
(b) Magnetic field lines are closed curves
(c) Magnetic field lines are open curves
(d) No two magnetic field lines are found to cross each other
Answer with full explanation — NDA 2020 (I & II) → Q: Which one of the following statements is NOT correct ?
(a) Buckminsterfullerene is an allotrope of carbon
(b) Diamond is a good conductor of electricity
(c) Graphite is a good conductor of electricity
(d) In graphite, each carbon atom is linked to three other carbon atoms
Answer with full explanation — NDA 2020 (I & II) → Q: How many covalent bonds are present in a Chloropropane molecule having molecular formula, C3H7Cl ?
Answer with full explanation — NDA 2020 (I & II) → Q: Which one of the following is the most fundamental characteristic of an element ?
(a) Melting point
(b) Atomic number
(c) Colour
(d) Atomic weight
Answer with full explanation — NDA 2020 (I & II) → Q: Neutrons were discovered by
(a) James Chadwick
(b) Ernest Rutherford
(c) J. J. Thomson
(d) John Dalton
Answer with full explanation — NDA 2020 (I & II) → Q: Atomic mass of an element is equal to the sum of number of
(a) electrons and protons only
(b) protons and neutrons only
(c) electrons and neutrons only
(d) electrons, protons and neutrons
Answer with full explanation — NDA 2020 (I & II) → Q: Which one of the following element's isotope is used in the treatment of cancer?
(a) Uranium
(b) Cobalt
(c) Sodium
(d) Iodine
Answer with full explanation — NDA 2020 (I & II) → Q: Which one of the following cell organelles may play a role in expelling excess water and wastes in case of unicellular organisms?
(a) Lysosome
(b) Vacuole
(c) Golgi body
(d) Endoplasmic reticulum
Answer with full explanation — NDA 2020 (I & II) → Q: Which one of the following terms describes the practice of growing two or more crops simultaneously on the same piece of land?
(a) Crop rotation
(b) Mixed cropping
(c) Intercropping
(d) Mixed farming
Answer with full explanation — NDA 2020 (I & II) → Q: Which one of the following statements is correct about effects of antibiotics on viruses?
(a) Viruses are "non-living" entities but it can interact with antibiotics
(b) Taking antibiotics cures viral infections
(c) Viruses do not possess metabolic pathways on which antibiotics can function, whereas bacteria have such pathways
(d) Viruses are resistant to antibiotics
Answer with full explanation — NDA 2020 (I & II) → Q: The Panama Canal opened in 1914, links
(a) Red Sea and Mediterranean Sea
(b) Atlantic Ocean and Pacific Ocean
(c) Indian Ocean and Pacific Ocean
(d) Adriatic Sea and Black Sea
Answer with full explanation — NDA 2020 (I & II) → Q: The United Nations Charter was signed by 51 original members of the United Nations in 1945 at the
(a) Hague Conference
(b) London Conference
(c) San Francisco Conference
(d) Berlin Conference
Answer with full explanation — NDA 2020 (I & II) → Q: Land Revenue Records maintained in India have categorized land-use into
(a) 6 categories
(b) 9 categories
(c) 15 categories
(d) 21 categories
Answer with full explanation — NDA 2020 (I & II) → Q: Dry land farming in India is largely confined to areas with rainfall less than
(a) 100 cm
(b) 85 cm
(c) 80 cm
(d) 75 cm
Answer with full explanation — NDA 2020 (I & II) → Q: For an area to be excluded from the drought-prone category, what percentage of its gross cropped area should be under irrigation?
(a) 10 per cent or more
(b) 20 per cent or more
(c) 25 per cent or more
(d) 30 per cent or more
Answer with full explanation — NDA 2020 (I & II) → Q: Which one of the following is NOT a current of Pacific Ocean?
(a) Oyashio current
(b) Alaska current
(c) Agulhas current
(d) California current
Answer with full explanation — NDA 2020 (I & II) → Q: The duration of monsoon in India extends for an average period of
(a) 80 – 140 days
(b) 100 – 120 days
(c) 90 – 130 days
(d) 100 – 140 days
Answer with full explanation — NDA 2020 (I & II) → Q: Which one of the following is the natural vegetation of South-east China?
(a) Subtropical broadleaf evergreen forest
(b) Tropical broadleaf evergreen forest
(c) Tropical deciduous forest
(d) Temperate evergreen forest
Answer with full explanation — NDA 2020 (I & II) → Q: Which one of the following is a cold local wind?
(a) Santa Ana
(b) Chinook
(c) Mistral
(d) Loo
Answer with full explanation — NDA 2020 (I & II) → Q: In an incandescent electric bulb, the filament of the bulb is made up of which metal?
(a) Aluminium
(b) Copper
(c) Tungsten
(d) Silver
Answer with full explanation — NDA 2020 (I & II) → Q: Which one of the following is NOT the unit of energy?
(a) Joule
(b) Watt-hr
(c) Newton-metre
(d) kg-metre/sec²
Answer with full explanation — NDA 2020 (I & II) → Q: Which one of the following statements is NOT correct?
(a) Biomass is a renewable source of energy
(b) Gobar gas is produced when cow-dung, crop residues, vegetable waste and sewage are allowed to decompose in the absence of oxygen
(c) Biogas generation reduces soil and water pollution
(d) Heating capacity of biogas is very low
Answer with full explanation — NDA 2020 (I & II) → Q: In prokaryotic organisms, nuclear region is not surrounded by a membrane. This undefined nuclear region is known as
(a) Nucleic acid
(b) Nucleoid
(c) Nucleolus
(d) Nucleosome
Answer with full explanation — NDA 2020 (I & II) → Q: Which one of the following plant tissues has dead cells?
(a) Epidermis
(b) Parenchyma
(c) Collenchyma
(d) Sclerenchyma
Answer with full explanation — NDA 2020 (I & II) → Q: Cartilage is NOT found in
(a) larynx
(b) nose
(c) ear
(d) urinary bladder
Answer with full explanation — NDA 2020 (I & II) → Q: Two planets orbit the Sun in circular orbits, with their radius of orbit as R₁ = R and R₂ = 4R. Ratio of their periods (T₁/T₂) around the Sun will be
(a) 1/16
(b) 1/8
(c) 1/4
(d) 1/2
Answer with full explanation — NDA 2020 (I & II) → Q: A metallic wire having resistance of 20 Ω is cut into two equal parts in length. These parts are then connected in parallel. The resistance of this parallel combination is equal to
(a) 20 Ω
(b) 10 Ω
(c) 5 Ω
(d) 15 Ω
Answer with full explanation — NDA 2020 (I & II) → Q: Light of uniform intensity impinges perpendicularly on a totally reflecting surface. If the area of the surface is halved, the radiation force on it will become
(a) double
(b) half
(c) four times
(d) one fourth
Answer with full explanation — NDA 2020 (I & II) → Q: The part of the human eye on which the image is formed is
(a) pupil
(b) cornea
(c) retina
(d) iris
Answer with full explanation — NDA 2020 (I & II) → Q: Which one of the following statements about sound is NOT correct?
(a) Sound travels at a speed slower than the speed of light
(b) Sound waves are transverse waves
(c) Sound waves are longitudinal waves
(d) Sound travels faster in moist air than in dry air
Answer with full explanation — NDA 2020 (I & II) → Q: When the short circuit condition occurs, the current in the circuit
(a) becomes zero
(b) remains constant
(c) increases substantially
(d) keeps on changing randomly
Answer with full explanation — NDA 2020 (I & II) → Q: Which one of the following is NOT a component of human male reproductive system?
(a) Cervix
(b) Urethra
(c) Seminal vesicle
(d) Vas deferens
Answer with full explanation — NDA 2020 (I & II) → Q: Which one of the following is NOT a reason of decrease in biodiversity?
(a) Large scale deforestation
(b) Exploitation of forest produce
(c) Maintaining sacred groves
(d) Encroachment in forest areas
Answer with full explanation — NDA 2020 (I & II) → Q: Which one of the following is NOT a cause of depletion in groundwater?
(a) Afforestation
(b) Loss of forests
(c) Excessive pumping of groundwater
(d) Construction of large scale concrete buildings
Answer with full explanation — NDA 2020 (I & II) → Q: Which one of the following types of radiations has the smallest wavelength?
(a) Microwaves
(b) Infra-red
(c) Visible light
(d) X-rays
Answer with full explanation — NDA 2020 (I & II) → Q: The instrument used for detecting the presence of electric current in a circuit is
(a) Refractometer
(b) Galvanometer
(c) Viscometer
(d) Diffractometer
Answer with full explanation — NDA 2020 (I & II) → Q: Which one of the following is the largest composition in biogas?
(a) Carbon dioxide
(b) Methane
(c) Hydrogen
(d) Hydrogen sulphide
Answer with full explanation — NDA 2020 (I & II) → Q: The Sun appears reddish during sunrise and sunset. The phenomenon in optics which is responsible for this appearance of the Sun is
(a) Reflection
(b) Total internal reflection
(c) Scattering
(d) Interference
Answer with full explanation — NDA 2020 (I & II) → Q: A lens has a power of +2·0 Dioptre. Which one of the following statements about the lens is true?
(a) The lens is concave and has a focal length of 0·5 metre
(b) The lens is convex and has a focal length of 2·0 metre
(c) The lens is convex and has a focal length of 0·5 metre
(d) The lens is concave and has a focal length of 2·0 metre
Answer with full explanation — NDA 2020 (I & II) → Q: At nearly 70 °C, sodium bicarbonate shows the property of gradually decomposing, which makes it usable in bakery products. The product of decomposition responsible for this use of sodium bicarbonate is
(a) Carbon dioxide
(b) Hydrogen
(c) Water vapour
(d) Oxygen
Answer with full explanation — NDA 2020 (I & II) → Q: Number of molecules of water of crystallization in copper sulphate, sodium carbonate and Gypsum are
(a) 5, 10 and 2 respectively
(b) 10, 2 and 5 respectively
(c) 5, 2 and 10 respectively
(d) 2, 5 and 10 respectively
Answer with full explanation — NDA 2020 (I & II) → Q: Which one of the following is the correct sequence of change in colours when a turmeric stain on white clothes is scrubbed by soap and then washed with water?
(a) Yellow – pink – blue
(b) Yellow – reddish brown – yellow
(c) Yellow – reddish brown – blue
(d) Yellow – blue – pink
Answer with full explanation — NDA 2020 (I & II) → Q: Which one of the following statements regarding Bleaching powder and D.D.T. is correct?
(a) Both are inorganic compounds
(b) Both are organic compounds
(c) Both contain chlorine
(d) Both contain calcium
Answer with full explanation — NDA 2020 (I & II) → Q: Which one of the following is the best example of desiccant?
(a) Silica gel
(b) Polystyrene
(c) Sodium chloride
(d) Sodium carbonate
Answer with full explanation — NDA 2020 (I & II) → Q: Which one of the following was the first mineral acid discovered?
(a) Sulphuric acid
(b) Hydrochloric acid
(c) Nitric acid
(d) Phosphoric acid
Answer with full explanation — NDA 2020 (I & II) → Q: The refractive index of fused quartz is 1.46 and that of sapphire is 1.77. If vq is the speed of light in quartz and vs is the speed of light in sapphire, then which one of the following relationships is correct?
(a) vq > vs
(b) vs > vq
(c) vs = vq
(d) vs = vq/2
Answer with full explanation — NDA 2020 (I & II) → Q: In case of a concave mirror, if an object is placed between the principal focus F and pole P of the mirror, which one of the following statements about the image is NOT correct?
(a) The image will be virtual
(b) The image will be enlarged or magnified
(c) The image will be formed at infinity
(d) The image will be erect
Answer with full explanation — NDA 2020 (I & II) → 