Chemistry
Grade-8
Easy
Question
Bone charcoal is an allotrope of ____________ .
- Silicon
- Carbon
- Phosphorous
- Nitrogen
Hint:
The other examples of the allotropes of the same element are coke, coal, graphite etc.
The correct answer is: Carbon
The correct option is b)Carbon.
- Coke, coal, charcoal, bone charcoal, etc. are non-crystalline allotropes of carbon. These are commonly referred to as amorphous carbon.
- They are obtained by destructive distillation of animal bones.
- Bone char contains 10% carbon and 90% impurities such as calcium phosphate and calcium carbonate.
- It is used to filter aquarium water.
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Wood charcoal can be used in
Wood charcoal can be used in
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Identify the substance that is a good conductor of electricity from the following.
Identify the substance that is a good conductor of electricity from the following.
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Which product will form on passing sulfur vapor through red hot charcoal?
Which product will form on passing sulfur vapor through red hot charcoal?
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The amorphous allotropy of carbon that contains the least amount of carbon is
The amorphous allotropy of carbon that contains the least amount of carbon is
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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.
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?
Which of the following compounds is not carbon's amorphous form?
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Which of the following picture does not depict the uses of wood charcoal?
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Wood charcoal acts as
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The substance which is present in the highest amount in the ivory black is
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Which of the following substance contain almost 99% of carbon?
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Sugar charcoal can also be prepared by the following.
The correct option is d)By dehydration of cane sugar.
Sugar charcoal is made by destructive distillation of sugar cane sugar. It is also made by dehydrating sugar in the presence of concentrated sulfuric acid. Sulfuric acid is a dehydrating agent, so it absorbs water from the sugar, leaving behind a black carbon residue.
Sugar charcoal can also be prepared by the following.
ChemistryGrade-8
The correct option is d)By dehydration of cane sugar.
Sugar charcoal is made by destructive distillation of sugar cane sugar. It is also made by dehydrating sugar in the presence of concentrated sulfuric acid. Sulfuric acid is a dehydrating agent, so it absorbs water from the sugar, leaving behind a black carbon residue.
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Which of the following substance/s reacts with steam or oxides of metals?
Which of the following substance/s reacts with steam or oxides of metals?
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Which of the following forms of carbon occur in nature?
Which of the following forms of carbon occur in nature?
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