Question

1. Carbon is not found in the free state in nature.
2. Diamond is the hardest substance known.
3. Being a nonmetal, graphite is a bad conductor of electricity.
4. Charcoal is used in the purification of water.
5. A component of water gas is used in the manufacture of ammonia.
6. One gets asphyxiated in an atmosphere of CO.
7. CNG is a cleaner fuel than petrol.​

Answer 1

Explanation:

1.No

2.The hardest substance known is diamond. [but see note below] Diamond is made up entirely of the element carbon. (Another thing that is made entirely of carbon is graphite, one of the softest substances.) Diamond's hardness is roughly 10.5-14.5 million psi

3.Activated charcoal is the ideal water filter because it removes toxins from the water without stripping the water of salts and important minerals. Because impurities are kept in the filter, it's important to replace your water filter every 12 months to ensure it continues to work as it should.

4.Uses of Water Gas

Reacted with producer gas to make fuel gas. It is used in the Fischer-Tropsch process. It is used to obtain pure hydrogen to synthesize ammonia

5.An asphyxiant gas is a nontoxic or minimally toxic gas which reduces or displaces the normal oxygen concentration in breathing air. Breathing of oxygen-depleted air can lead to death by asphyxiation (suffocation).

6.CNG is one of the cleanest burning fuels available. The use of CNG reduces carbon monoxide emissions 90 to 97 percent.

Answer 2

Answer: ur required answer :-

Answers , serial wise :-

1 = false

2 = true

3 = false

4 = true

5 = true

7 = true

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hope this helps u !

Explanation:

itz akansha .