Quiz 242 – Science and Tech

1. The human eye can see clearly after-

(a) beyond 30 cms

(b) beyond 50 cms

(c) beyond 20 cms

(d) beyond 40 cms


2. The intoxicating content of tea is-

(a) Caffiene

(b) Tannin

(c) Theine

(d) None


3. Which of the following consequences of an atomic bomb explosion last for a very long time?

A. deadly radiation

B. radio active fall-out

C. excessive heat

D. concussion

(a) B and C

(b) B and D

(c) A and D

(d) C and A


4. Nucleus of an atom contains-

(a) protons

(b) protons and neutrons

(c) electrons, protons and neutrons

(d) neutrons


5. What is smoke?

(a) Carbon monoxide molecules

(b) Carbon dioxide

(c) Unburnt particles of carbon

(d) Unburnt methane


6. Rainbow is caused by-

(a) reflection and refraction

(b) only refraction

(c) reflection

(d) refraction and total internal reflection


7. Noise is measured in units of –

(a) nots

(b) decible

(c) noms

(d) phons



  1. (c) 
  2. (a)
  3. (b)
  4. (b)
  5. (c)
  6. (d)
  7. (d)

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  1. Answer provided against Q.NO.6 and Q.NO.7 were totally wrong………………….So,the correct answer against these would be ( a) Reflection and Refraction and ( b ) Decible…………………..So,guys please corrected the wrong answers….

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