Chemistry
Grade-8
Easy
Question
Identify the incorrect statement from the following.
- Bone charcoal is used to remove excess fluorides from water.
- Lampblack is used in the manufacture of black carbon papers for typewriters.
- Sugar charcoal is extensively used to decolorize cane sugar in manufacturing sugar.
- Wood charcoal is also used as smokeless fuel.
Hint:
Animal charcoal is highly porous and has excellent adsorption power.
The correct answer is: Sugar charcoal is extensively used to decolorize cane sugar in manufacturing sugar.
The correct option is c)Sugar charcoal is extensively used to decolorize cane sugar in manufacturing sugar.
It has some special properties. It has the power to remove substances from solutions. Boil the brown sugar solution together to decolorize. Activated charcoal's enormous surface provides a multiple of binding sites. When certain chemicals pass next to a carbon surface, they become trapped by the surface. This means that the activated carbon filter removes certain contaminants and ignores others.
Related Questions to study
Chemistry
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.
ChemistryGrade-8
Chemistry
The starting material is used to prepare hydrocarbons like methane is
(i) Charcoal
(ii) Hydrogen
(iii) Carbon dioxide
(iv) Carbon monoxide
The starting material is used to prepare hydrocarbons like methane is
(i) Charcoal
(ii) Hydrogen
(iii) Carbon dioxide
(iv) Carbon monoxide
ChemistryGrade-8
Chemistry
Bone charcoal is an allotrope of ____________ .
Bone charcoal is an allotrope of ____________ .
ChemistryGrade-8
Chemistry
Wood charcoal can be used in
Wood charcoal can be used in
ChemistryGrade-8
Chemistry
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.
ChemistryGrade-8
Chemistry
Which product will form on passing sulfur vapor through red hot charcoal?
Which product will form on passing sulfur vapor through red hot charcoal?
ChemistryGrade-8
Chemistry
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
ChemistryGrade-8
Chemistry
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.
ChemistryGrade-8
Chemistry
Which of the following compounds is not carbon's amorphous form?
Which of the following compounds is not carbon's amorphous form?
ChemistryGrade-8
Chemistry
Which of the following picture does not depict the uses of wood charcoal?
Which of the following picture does not depict the uses of wood charcoal?
ChemistryGrade-8
Chemistry
Wood charcoal acts as
Wood charcoal acts as
ChemistryGrade-8
Chemistry
The substance which is present in the highest amount in the ivory black is
The substance which is present in the highest amount in the ivory black is
ChemistryGrade-8
Chemistry
Which of the following substance contain almost 99% of carbon?
Which of the following substance contain almost 99% of carbon?
ChemistryGrade-8
Chemistry
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.
Chemistry
Identify the substance known as Ivory black from the following.
Identify the substance known as Ivory black from the following.
ChemistryGrade-8
