General Science · NDA previous year questions

2018 10 questions

1. Q562018 · 9 Sept 2018

   Which one of the following is the correct relation between Å and nm?

   1. A.1 nm $=10^{-1}$ Å
   2. B.1 nm = 10 Å
   3. C.1 nm = 1 Å
   4. D.1 nm $=10^{-2}$ Å
   Show answer

   Answer: B

2. Q702018 · 9 Sept 2018
   
   1. A.$\theta ={\sin }^{-1}(1/9.8)$
   2. B.$\theta ={\sin }^{-1}(1/20)$
   3. C.$\theta ={\sin }^{-1}(1/80)$
   4. D.$\theta ={\sin }^{-1}(1/100)$
   Show answer

   Answer: C

3. Q712018 · 9 Sept 2018

   The coefficient of areal expansion of a material is $1.6\times 10^{-5}{\mathrm{K}}^{-1}$. Which one of the following gives the value of coefficient of volume expansion of this material?

   1. A.$0.8\times 10^{-5}{\mathrm{K}}^{-1}$
   2. B.$2.4\times 10^{-5}{\mathrm{K}}^{-1}$
   3. C.$3.2\times 10^{-5}{\mathrm{K}}^{-1}$
   4. D.$4.8\times 10^{-5}{\mathrm{K}}^{-1}$
   Show answer

   Answer: B

4. Q802018 · 9 Sept 2018

   Which one of the following is called 'syngas'?

   1. A.$\mathrm{C}(\mathrm{s})+{\mathrm{H}}_2\mathrm{O}(\mathrm{g})$
   2. B.$\mathrm{CO}(\mathrm{g})+{\mathrm{H}}_2\mathrm{O}(\mathrm{g})$
   3. C.$\mathrm{CO}(\mathrm{g})+{\mathrm{H}}_2(\mathrm{g})$
   4. D.$\mathrm{N}{\mathrm{O}}_2(\mathrm{g})+{\mathrm{H}}_2(\mathrm{g})$
   Show answer

   Answer: C

5. Q862018 · 9 Sept 2018

   Which one of the following is not used as fertilizer?

   1. A.Ammonium nitrate
   2. B.Ammonium sulphide
   3. C.Ammonium phosphate
   4. D.Ammonium sulphate
   Show answer

   Answer: B

6. Q982018 · 9 Sept 2018

   Which one of the following depicts the correct circuit of a reflex arc?

   1. A.Effector—sensory neuron—spinal cord—motor neuron—receptor
   2. B.Receptor—sensory neuron—spinal cord—motor neuron—effector
   3. C.Receptor—sensory neuron—brain—motor neuron—effector
   4. D.Sensory neuron—receptor—brain—effector—motor neuron
   Show answer

   Answer: B

7. Q672018 · 22 Apr 2018

   A ball balanced on a vertical rod is an example of

   1. A.stable equilibrium
   2. B.unstable equilibrium
   3. C.neutral equilibrium
   4. D.perfect equilibrium
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   Answer: B

8. Q702018 · 22 Apr 2018

   Which one of the following statements about the refractive index of a material medium with respect to air is correct?

   1. A.It can be either positive or negative
   2. B.It can have zero value
   3. C.It is unity for all materials
   4. D.It is always greater than one
   Show answer

   Answer: D

9. Q782018 · 22 Apr 2018

   Brine is an aqueous solution of

   1. A.$\mathrm{NaCl}$
   2. B.$\mathrm{NaOH}$
   3. C.$\mathrm{NaHC}{\mathrm{O}}_3$
   4. D.$\mathrm{N}{\mathrm{a}}_2\mathrm{C}{\mathrm{O}}_3$
   Show answer

   Answer: A

10. Q902018 · 22 Apr 2018

    Which one of the following parts of body does NOT take part in the process of breathing?

    1. A.Bronchi
    2. B.Bowman’s capsule
    3. C.Diaphragm
    4. D.Trachea
    Show answer

    Answer: B