Science Question Bank
for Exam preparation

Q2. Which salt is used as a raw material for making a large number of useful chemicals in industry?

1. Sodium Chloride
2. Ammonium Hydroxide
3. Ammonium Chloride
4. Sodium Nitrate

Q3. Power loom invention is associated with:

1. Devi
2. Johnson Harrison
3. Edmund Cartwright
4. Walter Hunt

Q4. Which vitamin is needed to prevent Xero-phthalmia?

1. A
2. B
3. C
4. D

Q5. Which of the following is the major photochemical smog?

1. Peroxyl acetyl nitrate
2. Smog
3. Hydrogen peroxide
4. Chlorofluorocarbon

Q6. Which of the following are electrovalent compounds?

1. Copper Sulphate
2. Calcium Nitrate
3. Magnesium Oxide
4. All of the above

Q7. Consider the following statement (s) related to the force of friction I. It is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. II. When surfaces in contact move relative to each other, the friction between the two surfaces converts kinetic energy into thermal energy (that is, it onverts work to heat). Which is/are correct statement (s)?

1. Only I
2. Only II
3. Both I & II
4. Neither I nor II

Q8. Halley's comet completes one revolution around the sun in:

1. 40 years
2. 46 years
3. 60 years
4. 76 years

Q9. Who was the inventor of radioactivity?

1. Madam Curie
2. Irine Curie
3. Henery Bacqurel
4. Rutherford

Q10. What makes a reptile a reptile?

1. Cold blooded
2. Warm Blooded
3. Non-Hearing
4. Egg-laying