Q: Which one of the following wavelength radiations may correspond to an X-ray?
(a)1 nm
(b)10 nm
(c)100 nm
(d)300 nm
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NDA General Science Questions
33 previous year questions
Sub-topics
Physics - Electricity (7)Biology - Plant Biology (5)Chemistry - Basics (5)Chemistry - Acids & Bases (3)Biology - Cell Biology (3)Physics - Heat (2)General (2)Physics - Sound (2)Chemistry - Metals (2)Biology - Human Biology (2)
Q: Which one of the following statements is NOT correct?
(a)Inter-conversion of states of matter is a physical change
(b)Both chemical and physical changes occur during the burning of a candle
(c)In a physical change the chemical composition of a substance changes
(d)Rusting of iron is a chemical change
Q: एक ही पदार्थ से बने समान लंबाई और समान व्यास वाले दो चालक तारों को एक परिपथ में समान विभवांतर के पार पहले पैरलल में और फिर श्रृंखलित (सीरिज) में संयोजित किया जाता है। पैरलल और सीरिज संयोजनों में उत्पन्न ऊष्मा का अनुपात क्या होगा?
(a)2 : 1
(b)4 : 1
(c)1 : 2
(d)1 : 4
Q: उस निकाय (system) को क्या कहते हैं जो अपने आप-भूत के परिवेश के साथ ऊष्मा का विनिमय नहीं होने देता है?
(a)उष्मारोधी निकाय (Adiabatic system)
(b)अन-उष्मारोधी निकाय (Non-adiabatic system)
(c)संतुलन निकाय (Equilibrium system)
(d)असंतुलन निकाय (Non-equilibrium system)
Q: The intermixing of particles of two different types of matter on their own is called
(a)Osmosis
(b)Brownian motion
(c)Diffusion
(d)Conductance
Q: The relative atomic mass of boron (which exists in two isotopic forms 10B and 11B) is 10·81. What will be the abundance of 10B and 11B, respectively (consider a sample of 100 atoms) ?
(a)19% and 81%
(b)81% and 19%
(c)38% and 62%
(d)62% and 38%
Q: Organisms of which of the following phylum are called sponges?
(a)Coelenterata
(b)Platyhelminthes
(c)Porifera
(d)Echinodermata
Q: अधिकांश प्रोकैरियोट्स (prokaryotes) में, गुणसूत्र संख्या कितनी होती है ?
(a)4
(b)3
(c)2
(d)1
Q: भारत में AC मुख्य घरेलू आपूर्ति द्वारा कितने समयांतराल में दिशा बदलती रहती है ?
(a)प्रत्येक 50 s में
(b)प्रत्येक 50 ms में
(c)प्रत्येक 100 s में
(d)प्रत्येक 100 ms में
Q: The mass number of argon is 40. Which one of the following statements is correct?
(a)The number of protons in argon is 22.
(b)The number of neutrons in argon is 18.
(c)The number of electrons in argon is 18.
(d)The sum of numbers of protons and electrons in argon is 40.
Q: Which one of the following is the correct order of the valencies of elements Ne, Si, N and Mg?
(a)Ne < Mg < N < Si
(b)Si < N < Mg < Ne
(c)Ne < N < Si < Mg
(d)Mg < Ne < N < Si
Q: Which one of the following wavelengths corresponds to the wavelength of X-rays?
(a)500 nm
(b)5000 nm
(c)100 nm
(d)1 nm
Q: Human eye can see objects at different distances with contrasting illuminations. This is due to
(a)far-sightedness
(b)near-sightedness
(c)far-sightedness and near-sightedness
(d)accommodation of eye
Q: Which one of the following reactions is an example of decomposition reaction?
(a)CH₄(g) + 2O₂(g) → CO₂(g) + 2H₂O(g)
(b)2AgCl(s) —Sunlight→ 2Ag(s) + Cl₂(g)
(c)CuO + H₂ —Heat→ Cu + H₂O
(d)Fe(s) + CuSO₄(aq) → FeSO₄(aq) + Cu(s)
Q: A current of 0.6 A is drawn by an electric bulb for 10 minutes. Which one of the following is the amount of electric charge that flows through the circuit?
(a)6 C
(b)0.6 C
(c)360 C
(d)36 C
Q: Bronze is an alloy of
(a)Cu and Zn
(b)Cu and Sn
(c)Zn and Mg
(d)Fe and Cu
Q: The digestive enzymes are present in
(a)mitochondria
(b)vacuoles
(c)lysosomes
(d)ribosomes
Q: After fertilization, the fruit and the seed are produced by
(a)ovule and ovary, respectively
(b)ovary and ovule, respectively
(c)ovary, no ovule required
(d)ovule, no ovary required
Q: The real beginning of western education in India can be dated from
(a)the Charter Act of 1813
(b)the Charter Act of 1793
(c)the Sarda Act of 1929
(d)the Macaulay’s Minute on Indian Education, 1835
Q: Solder is an alloy of
(a)Cu and Sn.
(b)Fe and Zn.
(c)Pb and Sn.
(d)Ag and Zn.
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
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
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
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.
Q: During seed germination, the part of the embryo which grows into root is
(a)Radicle.
(b)Plumule.
(c)Cotyledon.
(d)Epicotyl.
Q: Which one of the following hormones is responsible for the development of female sexual characters?
(a)Prolactin
(b)Estrogen
(c)Oxytocin
(d)Progesterone
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
Q: Neutrons were discovered by
(a)James Chadwick
(b)Ernest Rutherford
(c)J. J. Thomson
(d)John Dalton
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
Q: Which one of the following statements about diamond and graphite is not correct?
(a)Diamond has a tetrahedral structure, whereas graphite has a hexagonal planar structure.
(b)Both physical and chemical properties of diamond and graphite are different.
(c)Graphite is soft but diamond is hard.
(d)Graphite is a good conductor of electricity while diamond is not.
Q: Mitochondria are able to produce their own
(a)Nucleus
(b)Proteins
(c)Chloroplasts
(d)Digestive enzymes
Q: Which one of the following statements is correct?
(a)Xylem consists of tracheids, vessels, xylem parenchyma and xylem fibres.
(b)Flexibility in plants is due to sclerenchyma.
(c)Parenchyma have no intercellular spaces.
(d)Xylem consists of sieve plate, sieve tube and companion cells.
Q: Which one of the following is a major plate?
(a)Pacific Plate
(b)Cocos Plate
(c)Arabian Plate
(d)Philippine Plate
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