General Science · NDA previous year questions

2023 14 questions

1. Q562023 · 3 Sept 2023

   Galvanization is a method of protecting iron from rusting by coating with a thin layer of

   1. A.Gallium
   2. B.Aluminum
   3. C.Zinc
   4. D.Silver
   Show answer

   Answer: C

2. Q712023 · 3 Sept 2023

   Relationship between a flower and honey-bee will help the flower for/in

   1. A.Faster development
   2. B.Pollination
   3. C.Quick germination of pollen
   4. D.Increase in size
   Show answer

   Answer: B

3. Q852023 · 3 Sept 2023

   Which one of the following is the correct sequence during sexual reproduction in Angiosperms?

   1. A.Egg → zygote → embryo → seed
   2. B.Embryo → egg → zygote → seed
   3. C.Egg → embryo → zygote → seed
   4. D.Egg → seed → zygote → embryo 2 2
   Show answer

   Answer: A

4. Q872023 · 3 Sept 2023

   An iron nail sinks in water whereas an iron ship floats. Which of the following statements is correct in this regard? 1. Average density of ship is greater than that of the water 2. Average density of iron nail is greater than that of the water 3. Average density of the ship is less than that of the water 4. Average density of the ship is equal to that of the water Select the correct answer using the code given below:

   1. A.1 and 2
   2. B.2 and 3
   3. C.2 and 4
   4. D.1 and 4
   Show answer

   Answer: B

5. Q932023 · 3 Sept 2023

   Which among the following is NOT true with respect to colloidal solution?

   1. A.Particles are uniformly distributed throughout the solution
   2. B.Colloidal solution is homogenous in nature
   3. C.They show Tyndal effect
   4. D.They do not settle down when kept undisturbed
   Show answer

   Answer: B

6. Q942023 · 3 Sept 2023

   Kerosene and petrol mixture can be best separated by

   1. A.Sublimation
   2. B.Separating funnel
   3. C.Fractional distillation
   4. D.Compressing and cooling A B c A B c A B c A B c
   Show answer

   Answer: C

7. Q952023 · 3 Sept 2023

   As proposed by Dalton, which of the following symbol represents phosphorus?

   
   1. A.Option A
   2. B.Option B
   3. C.Option C
   4. D.Option D
   Show answer

   Answer: D

8. Q572023 · 16 Apr 2023

   Who among the following is not a recipient of Nobel Prize in Chemistry in 2022?

   
   1. A.Carolyn R. Bertozzi
   2. B.Benjamin List
   3. C.Morten Meldal
   4. D.K. Barry Sharpless 1 2 1 2 1 2
   Show answer

   Answer: B

9. Q632023 · 16 Apr 2023

   Browning of the chopped apple can be minimized by :

   1. A.using table sugar.
   2. B.preserving in a container.
   3. C.using lemon juice.
   4. D.using milk of magnesia.
   Show answer

   Answer: C

10. Q652023 · 16 Apr 2023

    Which one of the following apparatus is used for separating benzene and water mixture?

    1. A.Round bottom flask
    2. B.Conical flask
    3. C.Separating funnel
    4. D.Dean and Stark apparatus
    Show answer

    Answer: C

11. Q672023 · 16 Apr 2023

    Among the following, which is not the correct method for keeping the curd?

    1. A.Keeping in stainless steel vessel
    2. B.Keeping in copper vessel
    3. C.Keeping in plastic vessel
    4. D.Keeping in glass vessel
    Show answer

    Answer: B

12. Q852023 · 16 Apr 2023

    For manufacturing of glass, which among the following is used as a source of silica?

    1. A.Fine clay soil
    2. B.Wood powder
    3. C.Coconut shell
    4. D.Sand
    Show answer

    Answer: D

13. Q862023 · 16 Apr 2023

    Which among the following is the correct arrangement of halogens in the increasing order of their oxidizing nature?

    1. A.F, CI, Br, I
    2. B.CI, Br, F, I
    3. C.Br, I, CI, F
    4. D.I, Br, CI, F
    Show answer

    Answer: D

14. Q952023 · 16 Apr 2023

    Which one of the following is an example of Second Class Lever?

    1. A.A pair of scissors
    2. B.A bottle opener
    3. C.A cricket bat
    4. D.A bow and arrow
    Show answer

    Answer: B