Q nbsp-choose correct alternative-a- In combined state carbon occur as nbsp-i- coal nbsp-ii - diarnond nbsp-iii- graphite nbsp-iv- petroleum nbsp-b- A crystalline form of carbon is nbsp-i- lamp black nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp-ii- gas carbon nbsp- nbsp-iii- sugar nbsp-iv- fullerene nbsp-c- Graphite is not found in nbsp-i- Bihar nbsp-ii- Maharashtra-iii- Orissa nbsp-iv- Rajasthan-

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Byju's Answer

Standard X

Chemistry

Diamond

Q nbsp;cho...

Question

Q choose correct alternative.
a) In combined state carbon occur as

(i) coal
ii ) diarnond
(iii) graphite
(iv) petroleum
b) A crystalline form of carbon is

(i) lamp black
(ii) gas carbon
(iii) sugar
(iv) fullerene
c) Graphite is not found in

(i) Bihar
(ii) Maharashtra
(iii) Orissa
(iv) Rajasthan

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Solution

a. iv. In combined form, carbon occur as petroleum. Coal, diamond and graphite are free state of carbon. b. iv. Fullerene is the crystalline form of carbon. c. i. Graphite is not found in Bihar.

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Similar questions

Choose the correct alternative :

(a) In a combined state, carbon occurs as

(i) coal

(ii) diamond

(iii) graphite

(iv) petroleum

(b) A crystalline form of carbon is

(i) lamp black

(ii) gas carbon

(iii) sugar

(iv) fullerene

(i) Bihar

(ii) Maharashtra

(iii) Orissa

(iv) Rajasthan

(d) Diamond is used for

(i) making the electrodes of electric furnaces.

(ii) making crucible for melting metals.

(iii) cutting and drilling rocks and glass.

(iv) making carbon brushes for electric motors.

(e) Carbon forms innumerable compounds because

(i) it has four electrons in its outermost shell.

(ii) it behaves as a metal as well as a non-metal.

(iii) carbon atoms can form long chains.

(iv) it combines with other elements to form covalent compounds.

Q. Which of the following substances are crystalline allotrope of carbon?
(i) Diamond (ii) Charcoal (iii) Graphite (iv) Lamp black (v) Coke (vi) Fullerene

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

Q. Match column A to column B:

\begin{matrix} C o l u m n A & C o l u m n B a . N o b l e g a s & (i) C a r b o n, h y d r o g e n, o x y g e n b . G r a p h i t e & (i i) A r g o n c . C a l c i u m & (i i i) L u b r i c a n t s d . G l u c o s e & (i v) M o n o a t o m i c \end{matrix}

From the boxes given below choose the one with the correct order of the following sentences.

(i) That is fire.

(ii) A chemical reaction takes place.

(iii) Energy in the form of heat and light is released.

(iv) Oxygen combines with carbon and hydrogen.

(i) (ii) (iii) (iv)	(ii) (iii) (i) (iv)
(iv) (iii) (ii) (i)	(iv) (ii) (iii) (i)

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Q ​choose correct alternative. a) In combined state carbon occur as (i) coal ii ) diarnond (iii) graphite (iv) petroleum b) A crystalline form of carbon is (i) lamp black (ii) gas carbon (iii) sugar (iv) fullerene c) Graphite is not found in (i) Bihar (ii) Maharashtra (iii) Orissa (iv) Rajasthan

a. iv. In combined form, carbon occur as petroleum. Coal, diamond and graphite are free state of carbon. b. iv. Fullerene is the crystalline form of carbon. c. i. Graphite is not found in Bihar.

Q choose correct alternative.
a) In combined state carbon occur as

(i) coal
ii ) diarnond
(iii) graphite
(iv) petroleum
b) A crystalline form of carbon is

(i) lamp black
(ii) gas carbon
(iii) sugar
(iv) fullerene
c) Graphite is not found in

(i) Bihar
(ii) Maharashtra
(iii) Orissa
(iv) Rajasthan