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Byju's Answer

Standard VIII

Chemistry

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Q. Fill in th...

Question

Q. Fill in the blanks :
(a) ___is formed when charcoal is burnt in a limited supply of air.
(b) Coal is a form of carbon
(c) _is the most inferior form of coal.
(d) Wood charcoal is a _conductor of heat and electricity.
(e) ___ is used in making black shoe polish.

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Solution

Dear student,
Q1.(a) Carbon monoxide is formed when charcoal is burnt in a limited supply of air.

(b)Coal is an amorphous form of carbon.

(c)Peat is the most inferior form of coal.

(d)Wood charcoal is a bad conductor of heat and electricity.

(e)Wax is used in making black shoe polish.

R egards

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Similar questions

Fill in the blanks :

(a) ______________is formed when wood is burnt in a limited supply of air.

(b) Coal is a _______________ form of carbon.

(d) Wood charcoal is a _______________conductor of heat and electricity.

(e) __________________is used in making black shoe polish

Fill in the blanks :

(a) ___ product when carbon is burnt in a limited supply of air or oxygen.

(b) Carbon monoxide burns in air with a ___ flame to form carbon dioxide.

(d) A mixture of 95 $%$ oxygen and 5 $%$ carbon dioxide is called ___

(e) Carbon monoxide is used as a ___ in the extraction of pure metals from their corresponding ores.

Choose the correct alternative :

(a) Anthracite is

(i) an inferior type of coal

(ii) a superior type of coal

(iii) the cheapest form of coal

(iv) none of the above

(b) Destructive distillation of coal yields

(i) coal tar

(ii) coal gas

(iii) coke

(iv) all of the above

(i) an amorphous form of carbon

(ii) a crystalline form of carbon

(iii) a pure form of carbon

(iv) a cluster of carbon atoms

(d) The process by which decayed plants slowly convert into coal is called

(i) petrification

(ii) carbonisation

(iii) carbonification

(iv) fermentation

(e) The purest form of the amorphous carbon is

(i) wood charcoal

(ii) sugar charcoal

(iii) bone charcoal

(iv) lamp black

Write 'true' or 'false' against the following statements :

(a) Charcoal is a good adsorbent.

(b) Coke is obtained by destructive distillation of sugar.

(d) Wood charcoal is an important constituent of gun powder.

(e) Coal gas is used in the preparation of artificial fertilizers.

Q. Coal cannot be converted into one of the following forms of energy. This is:

(a) coal gas
(b) electricity
(c) oil
(d) charcoal

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Q. Fill in the blanks : (a) _____is formed when charcoal is burnt in a limited supply of air. (b) Coal is a ____ form of carbon (c) _____is the most inferior form of coal. (d) Wood charcoal is a _____conductor of heat and electricity. (e) _____ is used in making black shoe polish.

Dear student, Q1.(a) Carbon monoxide is formed when charcoal is burnt in a limited supply of air. (b)Coal is an amorphous form of carbon. (c)Peat is the most inferior form of coal. (d)Wood charcoal is a bad conductor of heat and electricity. (e)Wax is used in making black shoe polish. R egards

Q. Fill in the blanks :
(a) ___is formed when charcoal is burnt in a limited supply of air.
(b) Coal is a form of carbon
(c) _is the most inferior form of coal.
(d) Wood charcoal is a _conductor of heat and electricity.
(e) ___ is used in making black shoe polish.

Dear student,
Q1.(a) Carbon monoxide is formed when charcoal is burnt in a limited supply of air.

(b)Coal is an amorphous form of carbon.

(c)Peat is the most inferior form of coal.

(d)Wood charcoal is a bad conductor of heat and electricity.

(e)Wax is used in making black shoe polish.

R egards