Class 6 Science Chapter 11 MCQ Natures Treasures
MCQ on Natures Treasures Class 6
1. Choose the correct option in the following questions
Question 1.
Which of the following gas do we use in breathing?
(a) Carbon dioxide
(b) Nitrogen
(c) Oxygen
(d) None of these.
Answer:
(c) Oxygen
Question 2.
Wind is:
(a) air around us
(b) rising hot air
(c) air in motion
(d) none of these.
Answer:
(c) air in motion
Question 3.
Which is not a property of air?
(a) It occupies space
(b) It is transparent
(c) It is a gas
(d) It is a compound
Answer:
(d) It is a compound
Question 4.
The main constituent of the air is:
(a) nitrogen
(b) oxygen
(c) carbon dioxide
(d) hydrogen.
Answer:
(a) nitrogen
Question 5.
Wind does not help in the movement of which of the following?
(a) Firki
(b) Weather cock
(c) Ceiling fan
(d) Sailing yacht.
Answer:
(c) Ceiling fan
Question 6.
Ground water is a
(a) Renewable resource
(b) Non-renewable resource
(c) Exhaustible resource
(d) Inexhaustible resource
Answer:
(a) Renewable resource
Question 7.
The percentage of total drinking water available on earth is:
(a) 0.3%
(b) 15%
(c) 25%
(d) 45%
Answer:
(a) 0.3%
Question 8.
The process of collecting rainwater is called:
(a) Rainwater collecting
(b) Rainwater recharging
(c) Rainwater harvesting
(d) Rainwater replenishing.
Answer:
(c) Rainwater harvesting
Question 9.
The ratio of hydrogen and oxygen in water is
(a) 2:1
(b) 1:2
(c) 1 : 1
(d) none of these
Answer:
(a) 2:1
Question 10.
The most impure water is:
(a) rain water
(b) river water
(c) sea water
(d) none of these
Answer:
(c) sea water
Question 11.
Which of the following is a source of soft water
(a) Sea water
(b) Well water
(c) River water
(d) Rain water
Answer:
(d) Rain water
Question 12.
Out of these which source of energy used in photosynthesis?
(a) Coal
(b) Petrol
(c) Wood
(d) Sunlight
Answer:
(d) Sunlight
Question 13.
Which of the following is a disadvantage of using solar power?
(a) It is expensive to produce.
(b) It is not reliable in all weather conditions.
(c) It emits pollutants.
(d) It requires a large amount of land.
Answer:
(b) It is not reliable in all weather conditions.
Question 14.
Solar energy is harnessed using:
(a) solar cells
(b) turbines
(c) dams
(d) geothermal wells.
Answer:
(a) solar cells
Question 15.
An example of fossil fuel is
(a) paper
(b) wood
(c) plastic
(d) coal
Answer:
(d) coal
Question 16.
Which gas is produced, when coal bums in air?
(a) Oxygen
(b) Hydrogen
(c) Carbon dioxide
(d) Nitrogen
Answer:
(c) Carbon dioxide
Question 17.
Full form of L.P.G is
(a) Liquefied Petroleum Gas
(b) Liquid Petrol Gas
(c) Light Petroleum Gas
(d) None of the above.
Answer:
(a) Liquefied Petroleum Gas
Question 18.
Which one of the following is a role of forests?
(a) Provide food, shelter, water and medicines
(b) Prevent soil erosion
(c) Prevent flood
(d) All of the above
Answer:
(d) All of the above
Question 19.
Which of the following statements is incorrect? (NCERT Exemplar)
(a) All living beings require air to breathe.
(b) We can feel air but we cannot see it.
(c) Moving air makes it possible to fly a kite.
(d) Air is present everywhere but not in soil.
Answer:
(d) Air is present everywhere but not in soil.
Question 20.
What is not tme about air? (NCERT Exemplar)
(a) It makes the windmill rotate.
(b) It helps in the movements of aeroplanes.
(c) Birds can fly due tb presence of air.
(d) It has no role in water cycle.
Answer:
(d) It has no role in water cycle.
2. Fill in the blanks with appropriate words:
1. Waste from homes and industries pollute
Answer:
Water resources
2. Windmills use the energy of winds to generate __________
Answer:
Electricity
3. __________ is not fit for domestic, agriculture and industrial use.
Answer:
Salifte water
4. Water offered to the Sun early in the morning as an to the Sun.
Answer:
Expression of gratitude
5. Due to ____________________, the forest cover has been decreasing.
Answer:
Cutting of trees
6. __________ are natural agents that help in turning and loosening the soil?
Answer:
Earthworms
7. Human beings have been using to make tools such as __________
Answer:
Rocks, Hand axes
8. Coal, wood and dung cakes were used as __________
Answer:
Fuels for cooking
9. When fossil fuels are burnt __________ and __________ are produced.
Answer:
Smoke and carbon dioxide gas
10. Water covers about __________ of the Earth’s surface.
Answer:
Two-thirds
3. State whether the statements given below are True or False:
(i) Our body needs nitrogen to perform its functions.
Answer:
False
(ii) The air which surrounds the Earth is a mixture of gases.
Answer:
True
(iii) 21 per cent part of air is occupied by oxygen.
Answer:
True
(iv) Saline water fit for agriculture use.
Answer:
False
(v) We use heat and light from the moon for various purposes.
Answer:
False
(vi) In ancient times, India had a tradition of respecting, protecting and preserving forests.
Answer:
True
(vii) Arrow heads is not a rock tool.
Answer:
False
(viii) Petroleum is a fossil fuel.
Answer:
True
4. Match the following items given in Column A with that in Column B:
Question 1.
| Column A | Column B |
| (a) Moving air | (i) Water harvesting |
| (b) Saving water | (ii) Soil |
| (c) Sunlight | (iii) Breath |
| (d) Disintegration | (iv) Rock |
| (e) Oxygen | (v) Wind |
| (f) Hand axes | (vi) Source of energy |
Answer:
| Column A | Column B |
| (a) Moving air | (v) Wind |
| (b) Saving water | (i) Water harvesting |
| (c) Sunlight | (vi) Source of energy |
| (d) Disintegration | (ii) Soil |
| (e) Oxygen | (iii) Breath |
| (f) Hand axes | (iv) Rock |