Science Question Bank
for Exam preparation

Science- Q2. What are the two major processes of evolution of species?

1. Migration and adoptation
2. Process of selection
3. Process of isolation
4. Both B & C

Science- Q3. The jet aircrafts fly very easily and smoothly in the lower stratosphere. What could be the appropriate explanation? I. There are no clouds or water vapour in the lower stratosphere. II. There is no vertical wind in the lower stratosphere Which of the statements given above is/ are correct in this context?

1. I only
2. II only
3. Both I and II
4. Neither I nor II

Science- Q4. Bleaching powder is formed by treating chlorine with.......

1. Calcium Hydroxide
2. Potassium Hydrogen carbonate
3. Magnesium Hydroxide
4. None of the above

Science- Q5. Which of the following is a conductor of electricity?

1. Silver
2. Copper
3. Aluminum
4. All of the above

Science- Q6. ------------- play a vital role of releasing essential materials from the dead matter and thus maintain a continuous cycle of energy flow and of material.

1. Saprophytes
2. Autotrophs
3. Hetrotrophs
4. None of the above/ More than the above

Science- Q7. Which instrument is used to measure potential difference?

1. Galvanometer
2. Magnetometer
3. Voltmeter
4. Ammeter

Science- Q8. The inventor of the atomic theory is:

1. Rutherford
2. Madam Curie
3. John Dalton
4. Albert Einstein

Science- Q9. 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

Science- Q10. Which one of the following is not a function of the liver?

1. Regulation of blood sugar
2. Enzyme activation
3. Detoxification
4. Reproduction