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SAI International School

Class-X
Subject_ Chemistry
Topic- Carbon & it's Compounds

Subtopic-Versatile nature of Carbon &Allotropy
Home Assignment
Objective-
MCQs
Q.1 Consider the following statements related to diamond graphite.
1. Both diamond and graphite are used as abrasives.
2. Diamond and graphite have different arrangements of carbon atoms.
3.The carbon atoms in graphite have a different number of neutrons from
those in diamond.
4. The carbon atoms in both graphite and diamondhave four single
covalent bonds. The incorrect statement(s) is/are
(a) 1 and 3 (b) 2 and 4
(c) 1, 3 and 4 (d) All of these
Q.2 Buckminster fullerene is an allotropic form of
(a) phosphorus (b) sulphur
(c) carbon (d) tin
Q.3 Which of the following is not the use of graphite?
(a) It is used as lubricant
(b) It is used in manufacturing of lead-pencils
(c) It is used in manufacturing of artificial diamond
(d) It is used for making insulated plates

 For Assertion& Reason question follow the following directions.
DIRECTION: Each of these questions contains an Assertion followed by Reason.
Read them carefully and answer the question on the basis of following options. You
have to select the one that best describes the two statements.
(a) If both Assertion and Reason are correct and Reason is the correct explanation of
Assertion.
(b) If both Assertion and Reason are correct, but Reason is not the correct
explanation of Assertion.

(c) If Assertion is correct but Reason is incorrect.

(d) If Assertion is incorrect but Reason is correct.
(e) If Assertion & Reason both are incorrect.

Q.4 Assertion:Carbon has ability to form long carbon chains.
Reason: Carbon has a unique property of ability to form long
straight and branched chains called catenation.

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