General Science · NDA previous year questions

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2021 13 questions

Q642021 · 18 Apr 2021
Which one of the following is not used as a raw material in the manufacture of glass?
1. A.Soda
2. B.Alumina
3. C.Borax
4. D.Gypsum
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Answer: D
Q662021 · 18 Apr 2021
Solder is an alloy of
1. A.Cu and Sn.
2. B.Fe and Zn.
3. C.Pb and Sn.
4. D.Ag and Zn.
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Answer: C
Q702021 · 18 Apr 2021
Numerically two thermometers, one in Fahrenheit scale and another in Celsius scale shall read same at
1. A.-40°
2. B.0°
3. C.-273°
4. D.100°
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Answer: A
Q862021 · 18 Apr 2021
During seed germination, the part of the embryo which grows into root is
1. A.Radicle
2. B.Plumule
3. C.Cotyledon
4. D.Epicotyl
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Answer: A
Q872021 · 18 Apr 2021
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:
1. A.Style, Stigma, Ovary
2. B.Stigma, Style, Ovary
3. C.Pistil, Stigma, Ovary
4. D.Ovary, Pistil, Style
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Answer: B
Q882021 · 18 Apr 2021
Which one of the following colours may be obtained by combining green and red colours?
1. A.Blue
2. B.Magenta
3. C.Pink
4. D.Yellow
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Answer: D

2020 9 questions

Q652020 · 6 Sept 2020
Neutrons were discovered by
1. A.James Chadwick
2. B.Ernest Rutherford
3. C.J. J. Thomson
4. D.John Dalton
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Answer: A
Q692020 · 6 Sept 2020
Which one of the following terms describes the practice of growing two or more crops simultaneously on the same piece of land ?
1. A.Crop rotation
2. B.Mixed cropping
3. C.Intercropping
4. D.Mixed farming
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Answer: B
Q772020 · 6 Sept 2020
Cartilage is NOT found in
1. A.larynx
2. B.nose
3. C.ear
4. D.urinary bladder
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Answer: D
Q782020 · 6 Sept 2020
Two planets orbit the Sun in circular orbits, with their radius of orbit as $R_{1} = R$ and $R_{2} = 4 R$ . Ratio of their periods $(T_{1} / T_{2})$ around the Sun will be
1. A. $1/16$
2. B. $1/8$
3. C. $1/4$
4. D. $1/2$
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Answer: B
Q812020 · 6 Sept 2020
The part of the human eye on which the image is formed is
1. A.pupil
2. B.cornea
3. C.retina
4. D.iris
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Answer: C
Q852020 · 6 Sept 2020
Which one of the following is NOT a component of human male reproductive system ?
1. A.Cervix
2. B.Urethra
3. C.Seminal vesicle
4. D.Vas deferens
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Answer: A
Q862020 · 6 Sept 2020
Which one of the following is NOT a reason of decrease in biodiversity ?
1. A.Large scale deforestation
2. B.Exploitation of forest produce
3. C.Maintaining sacred groves
4. D.Encroachment in forest areas
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Answer: C
Q902020 · 6 Sept 2020
The Sun appears reddish during sunrise and sunset. The phenomenon in optics which is responsible for this appearance of the Sun is
1. A.Reflection
2. B.Total internal reflection
3. C.Scattering
4. D.Interference
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Answer: C
Q942020 · 6 Sept 2020
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 ?
1. A.Yellow – pink – blue
2. B.Yellow – reddish brown – yellow
3. C.Yellow – reddish brown – blue
4. D.Yellow – blue – pink
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Answer: B

2019 17 questions

Q602019 · 17 Nov 2019
A student measures certain lengths using a meter scale having least count equal to 1 mm. Which one of the following measurements is more precise?
1. A.0.50 mm
2. B.29.07 cm
3. C.0.925 m
4. D.910 mm
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Answer: C
Q652019 · 17 Nov 2019
Soaps clean surfaces on the principle based on
1. A.Viscosity
2. B.Floatation
3. C.Elasticity
4. D.Surface tension
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Answer: D
Q782019 · 17 Nov 2019
Which one of the following statements about glass is not correct?
1. A.Glass is often said to be a supercooled liquid.
2. B.Glass has no definite melting point.
3. C.Soda glass is harder than pyrex glass.
4. D.Boron is present in pyrex glass.
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Answer: C
Q792019 · 17 Nov 2019
Which one of the following statements is correct?
1. A.Both boiling and evaporation are surface phenomena.
2. B.Boiling is a surface phenomenon, but evaporation is a bulk phenomenon.
3. C.Both boiling and evaporation are bulk phenomena.
4. D.Boiling is a bulk phenomenon, but evaporation is a surface phenomenon.
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Answer: D
Q832019 · 17 Nov 2019
A sample of ‘soft soap’ contains
1. A.Caesium
2. B.Potassium
3. C.Calcium
4. D.Magnesium
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Answer: B
Q852019 · 17 Nov 2019
Which one of the following substances is not a mixture?
1. A.Tin
2. B.Sea water
3. C.Soil
4. D.Air
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Answer: A
Q872019 · 17 Nov 2019
Net movement of water from a dilute to a concentrated solution through a selectively permeable membrane is called
1. A.Diffusion
2. B.Dispersion
3. C.Osmosis
4. D.Absorption
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Answer: C
Q952019 · 17 Nov 2019
Who among the following popularized the use of embryological characters in taxonomy?
1. A.Carl Linnaeus
2. B.Panchanan Maheshwari
3. C.Birbal Sahni
4. D.Bentham and Hooker
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Answer: B
Q682019 · 21 Apr 2019
The formula for conversion between Fahrenheit and Celsius is °F=X+(1.8×°C) What is factor X?
1. A.32
2. B.22
3. C.98
4. D.42
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Answer: A
Q712019 · 21 Apr 2019
A fuse wire must be
1. A.conducting and of low melting point
2. B.conducting and of high melting point
3. C.insulator and of high melting point
4. D.insulator and of low melting point
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Answer: A