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Earn 100

Calcium carbonate is required for the production of the glass.
(a)True
(b)False

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Important Questions on Occurence of Carbon and its Compounds in Nature
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Sodium hydrogen carbonate when added to acetic acid, evolves a gas. Which of the following statements are true about the gas evolved?
(i) It turns lime water milky.
(ii) It extinguishes a burning splinter.
(iii) It dissolves in a solution of sodium hydroxide.
(iv) It has a pungent order.

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HARD
(i) increase in pressure
(ii) increase in temperature
(iii) decrease in pressure
(iv) decrease in temperature

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_____ is used to extinguish the fire that involves electrical equipment.
Carbon dioxide | Carbon monoxide | Ignition temperature | Water | Low |
Kilojoule per kg (kJ/kg) | Nuclear | Spontaneous | Hotter | Blue, yellow |

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