Science Question Bank
for Exam preparation

Science- Q2. Consider following statements: I. Green chemistry focuses on effects of chemical pollutants on nature. II. Environmental chemistry focuses on technological approach to prevent pollution. Which statement(s) is/are correct?

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

Science- Q3. A yellow dust appears on the fingers, whenever we touch the middle of a flower. These tiny yellow grains are one of the most precious substances in nature because they contain the secret of plant life. What is this dust called?

1. Pollen
2. Sperm
3. Spore
4. Sporocyst

Science- Q4. Name a gas which is produced from fermentation of sugar?

1. Ammonia
2. Butane
3. Propane
4. Carbon Dioxide

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

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

Science- Q6. The sky appears black from the moon because of:

1. Lack of atmosphere
2. Lack of cloud
3. Lack of oxygen and CO2
4. None of these

Science- Q7. The back part of the moon is always calm and dark which is called:

1. Sea of tranquillity
2. Ocean of storms
3. Both of these
4. None of these
5. Sea of tranquillity

Science- Q8. Consider the following statement (s) about frequency I. It is describes as the number of waves that pass a fixed place in a given amount of time. II. It is measured in the hertz unit, named in honour of the 19th-century German physicist Heinrich Rudolf Hertz. Which is/are correct statement (s)?

1. Only I
2. Only II
3. Both I & II
4. All of the above

Science- Q9. How much force does one coulomb of electric charge exerts on an equal charge placed at a distance of one meter from it?

1. 9 * 109 Newton
2. 10 * 109 Newton
3. 9 * 108 Newton
4. 8 * 109 Newton

Science- Q10. The magnetic field produced by a current carrying solenoid is similar to the magnetic field produced by a:

1. Bar magnet
2. Ring magnet
3. Rod magnet
4. Horse shoe magnet