General Science · NDA previous year questions

2021 13 questions

1. Q512021 · 14 Nov 2021

   Which one of the following statements about biodiversity is not correct ?

   1. A.The term ‘biodiversity’ was coined by Walter G. Rosen in 1986.
   2. B.The term ‘biodiversity hotspots’ was coined by Norman Myers in 1988.
   3. C.The regions having richest biodiversity are called ‘biodiversity hotspots’.
   4. D.More than 100 hotspots of biodiversity are identified in the world.
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   Answer: D

2. Q612021 · 14 Nov 2021

   Which one of the following tissues is known as basic packing tissue and found in xylem and phloem ?

   1. A.Collenchyma
   2. B.Parenchyma
   3. C.Sclerenchyma
   4. D.Vessels
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   Answer: B

3. Q762021 · 14 Nov 2021

   Cinnabar is an ore of which one of the following?

   1. A.Copper
   2. B.Zinc
   3. C.Mercury
   4. D.Manganese
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   Answer: C

4. Q792021 · 14 Nov 2021

   Myopia is a defect in human vision where an image of a

   1. A.nearby object is focused beyond the retina.
   2. B.nearby object is focused before the retina.
   3. C.distant object is focused before the retina.
   4. D.distant object is focused beyond the retina.
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   Answer: C

5. Q812021 · 14 Nov 2021

   Twinkling of stars is primarily due to the atmospheric

   1. A.refraction
   2. B.reflection
   3. C.polarization
   4. D.dispersion
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   Answer: A

6. Q942021 · 14 Nov 2021

   What is the total number of covalent bonds in methanol ?

   1. A.3
   2. B.4
   3. C.5
   4. D.6
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   Answer: C

7. Q562021 · 18 Apr 2021

   Keppel Island is completely bleached mainly due to the expansion of

   1. A.Starfish
   2. B.Blue whale
   3. C.Octopus
   4. D.Sea horse
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   Answer: A

8. 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

9. 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

10. 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

11. 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

12. 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

13. 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