Science Question Bank
for Exam preparation

Q2. 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

Q3. ------------- 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

Q4. Which of the following is not a member of the vitamin B complex?

1. Thiamine
2. Riboflavin
3. Folic acid
4. Ascorbic acid

Q5. 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.

Q6. The heating elements of electric iron and toaster are made of:

1. Metals
2. Alloys
3. Glass
4. Hard rubber

Q7. Which of the following is the part of non- living components of environment include landforms, climate, water-bodies, temperature, humidity, air etc.?

1. Physical Environment
2. Cultural Environment
3. Biological Environment
4. Cognitive Environment

Q8. SMOG is caused due to:

1. Emissions from vehicles
2. From incinerators
3. Oil paints
4. All of the above

Q9. Find out the salient features of environment:

1. It is the sum of biotic and abiotic elements.
2. It is based on the4 interactive and functional relationship between and biotic and abiotic
3. It always tens to maintain ecological balance.
4. All of the above

Q10. Name the salt when dissolved in water give an acidic solution?

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