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SAI International School
Class-X
Subject_ Chemistry
Topic- Carbon & it's Compounds
Subtopic-Hydrocarbons
Home Assignment
Objective-
MCQs
Q.1 General formula of alkyne is-
(a) CnH 2n+2 (b) CnH 2n
(c) CnH 2n-2 (d)CnH 2n
Q.2 Compound X is a compound with four-carbon atoms. When it is burnt, light is
generated. Here, the colour of the flame is yellow because of the presence of
carbon particles.
(a) C 6H 12 (b) C 6H 14
(c) C 4H 6 (d) C 4H 10
Q.3 Pentane has the molecular formula C 5H 12. It has
(a) 5 covalent bonds (b) 12 covalent bonds
(c) 16 covalent bonds (d) 17 covalent bonds
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 : Third member of alkane is propane^C3H 8h
Reason : It is obtained from general formula CnH 2n+2 .
Q.5
Assertion : Cyclopropane is heterocyclic compound.
Reason : Cyclopropane comes into category of thosecompounds in
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