Science Question Bank
for Exam preparation

Q2. 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

Q3. What is an ionic bond?

1. Ionic bond is formed by sharing of electrons between two atoms.
2. It is a bond formed by the transfer of electrons from one atom to another.
3. Both A and B are correct
4. None of the above

Q4. In which part of the body digestion of protein starts?

1. Mouth
2. Stomach
3. Duodenum
4. Intestine

Q5. Which of the following is an air-borne disease?

1. Measles
2. Typhoid
3. Pink eye
4. None of the above

Q6. Vaccination was started by.......

1. Jonas E. Salk
2. Paul Muller
3. Edward Jenner
4. Robert Frost

Q7. What is Air Quality Index?

1. It tells about the sound pollution
2. It measures air pollution mainly sulphur content in the air.
3. It measures ozone levels in your area.
4. It checks the colour of the air.

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

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

Q9. Which of the following gas does not contribute to the global warming?

1. Methane
2. Carbon dioxide
3. Sulpuhr
4. Acetylene

Q10. Which of the following statement is true about ionic compounds?

1. Ionic compounds conduct electricity when dissolved in water.
2. Ionic compounds are not soluble in water.
3. Ionic compounds are crystalline solids.
4. Only A and C