Question

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A-1.
(C) Methane
(D) ionic bond
Carbon d Its Compounas
OBJECTIVE QUESTIONS
SINGLE CHOICE OBJECTIVE, STRAIGHT CONCEPTIFORMULA ORIENTED
SECTION (A) : INTRODUCTION, COVALENT BONDING :
In a double covalent bond number of electron pairs shared are -
(D) 6
(A) 2
(B)3
A-2
Which of the following compound contain single covalent bond ?
(D) Carbon dioxide
(A) Oxygen
(B) Nitrogen
A-3 Carbon dioxide molecule contains -
(A) single covalent bond
(B) double covalent bond
(C) triple covalent bond
A4 Covalent compounds can be dissolved in-
(D) all of these
(A) benzene
(8) ether
(C) alcohol
A-5. Covalent compounds are generally-
(A) good conductors of electricity.
(B) bad conductors of electricity
(C) semiconductors of electricity.
(D) none of these
SECTION (B): ALLOTROPIC FORMS OF CARBON :
B-1.
Which of the following allotropic form of Carbon used in making Crucibles -
(A) Diamond
(B) Graphite
(C) Fullerene
(D) Coke
B-2 Diamond means:
(A) Transparent (B) Hardness
(C) Both A and B (D) Conductor
B3.
Bond length between carbon-carbon atoms in diamond is:
(A) 1.34A
(B) 1.40 A
(C) 1.54 A
(D) 1.7A
B-4. Graphite is used in making electrodes because :
(A) It has high melting point
(B) It is soft and slippery
(C) It is a good conductor of electricity
(D) None of these
B-5. Graphite mells at a high temperature of about:
(A) 4236°C
(B) 5326°C
(C)3730°C
(D) 6326°C
SECTION (C) : HYDROCARBONS AND HOMOLOGOUS SERIES:
C-1, The general formula for saturated hydrocarbons is -
(A)CH22
(B)CH
(C)CH
(D)CH
C-2 Select the alkyne from the following -
(A)CH
(B)CH (C)C,H
(D) None of these
C-3 In order to form branching, a saturated organic compound must have a minimum of -
(A) four carbon atoms
(B) three carbon atoms
(C) five carbon atoms
(D) any number of carbon atoms
The number of C-H bonds in ethane (CH) molecule is -
(A) four
(B) six
(C)eight
05.
Which of the following does not belong to alkane?
(D) ten
(A)CH (B) CH
(D)CH,
(C)CH
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Answer 1

Answer:

carbon do

ioxide nitrogen