Science Question Bank
for Exam preparation

Q2. What do you understand by Food Web?

1. It deals with the relationship between the number of primary producers and consumers of different order.
2. It is the sequence of energy transfer from the lower levels to the upper or higher trophic levels.
3. A community of organisms where there are several interrelated food chains
4. None of the above/ More than the above

Q3. The most visually striking evidence of global warming is:

1. The increased precipitation along the Gulf coast states
2. Highly varying temperature fluctuations felt during the winter months
3. Rapid melting of glacial ice on nearly every continent
4. All of the above

Q4. Name the gas which is found in abundance in earth in both combine and free state with other elements?

1. Oxygen
2. Nitrogen
3. Hydrogen
4. Sulphur

Q5. The acidic nature and basic nature of some salt solutions can be explained on the basis of:

1. Splitting of a salt compound
2. Hydrolysis of salts
3. Both A and B
4. Only B

Q6. 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

Q7. 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

Q8. Name the salt when dissolved in water give an acidic solution?

1. Potassium Chloride
2. Ammonium Chloride
3. Sodium Carbonate
4. Sodium Acetate

Q9. In which part of the body digestion of protein starts?

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

Q10. How biocides work?

1. Control the multiplication of insects
2. Kill the insects
3. Manage the original form of material
4. Control the bacteria