Chemistry
Grade-8
Easy
Question
What products (A and B) were obtained during the following chemical reaction?
Hint:
Both sulphur and carbon are oxidised producing two gases.
The correct answer is:
The correct option is b)
Hot concentrated sulfuric acid oxidizes non-metals such as carbon (such as bituminous coal) as follows:
Sulfuric acid interacts with carbon to produce carbon dioxide and sulfur dioxide gases and water. A heated concentrated sulfuric acid solution must be used. Carbon (as bituminous coal) and sulfur are oxidized by hot concentrated sulfuric acid. Concentrated sulfuric acid is an oxidizing acid that can convert sulfuric acid to sulfur dioxide while oxidizing carbon to carbon dioxide.
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Read the following paragraph carefully.
X is prepared when the wood is heated in a limited air supply. This X is used to increase the absorption capacity of gases by heating them at a very high temperature. The substance obtained by this process is called Y. When this X reacts with the oxide of the metal, it gives the mixture of Z and W. This mixture is also called producer gas.
Identify the compounds X, Y, and Z in the above paragraph.
Read the following paragraph carefully.
X is prepared when the wood is heated in a limited air supply. This X is used to increase the absorption capacity of gases by heating them at a very high temperature. The substance obtained by this process is called Y. When this X reacts with the oxide of the metal, it gives the mixture of Z and W. This mixture is also called producer gas.
Identify the compounds X, Y, and Z in the above paragraph.
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(ii) Hydrogen
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2. It is a very good reducing agent.
3. It burns at a very low temperature.
4. It is a soft, black, and porous liquid.
Why is the wood charcoal used in the water filters and gas masks?
1. It is a good adsorbent of gases, liquids, and solids.
2. It is a very good reducing agent.
3. It burns at a very low temperature.
4. It is a soft, black, and porous liquid.
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Which of the following compounds is not carbon's amorphous form?
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Sugar charcoal can also be prepared by the following.
The correct option is d)By dehydration of cane sugar.
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Sugar charcoal can also be prepared by the following.
ChemistryGrade-8
The correct option is d)By dehydration of cane sugar.
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