MCQ Questions for Class 10 Chemistry Carbon And Its Compounds Quiz 4

Two adjacent layers in graphite are bonded by comparatively _______ forces.

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strong
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weak
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both A and B
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none of these

Which of the following is a crystalline allotrope of carbon?

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Charcoal
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Coal
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Fullerene
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Lamp black

$Z-\overset{Z}{\overset{|}{\underset{Z}{\underset{|}{X}}}}-\overset{Z}{\overset{|}{\underset{Z}{\underset{|}{X}}}}-\overset{Z}{\overset{|}{X}}=Y$

Given here is the structural formula of the compound formed of X, Y and Z elements.

X is a tetravalent element and exhibits catenation property. Y belongs to group 16 and periodZ is the only non-metal present in the reactivity series.

The next member of homologous series of the above compound is:

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$CH_3 CHO$
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$CH_3 CH_2 CH_2 CH_2 CHO$
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$CH_3 CH_2 CH_2 CHO$
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none of these

Explanation

X is carbon, a tetravalent element that exhibits catenation property.

Y is oxygen, element that to group 16 and period 2.

Z is hydrogen, the only non-metal present in the reactivity series.

This compound has 3 carbon atoms and can be written as:

$H-\overset{H}{\overset{|}{\underset{H}{\underset{|}{C}}}}-\overset{H}{\overset{|}{\underset{H}{\underset{|}{C}}}}-\overset{H}{\overset{|}{C}}=O$

So, the next member of homologous series of the above compound will have 4 carbon atoms.

Structure of diamond is :

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linear
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tetrahedral
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octahedral
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hexagonal

Which of the following is an allotropic form of carbon?

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Diamond
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Graphite
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Fullerene
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All of these

Which is/are the characteristic(s) of Diamond?

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Opaque
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Hardness
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Both $A$ and $B$
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Conductor of electricity

Diamond is not a good conductor of electricity because :

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it is very hard
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it's structure is very compact
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it is not water soluble
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it has no free electrons to conduct electric current

Graphite is used in making electrodes because:

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It has high melting point
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It is soft and slippery
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It is good conductor of electricity
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None of these

The most stable fullerene is :

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$C_{60}$
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$C_{70}$
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$C_{100}$
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$C_{90}$

During decarboxylation of ethanoic acid with soda lime

$(NaOH+CaO), \ CO_2$ is removed as :

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$CO_2$
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$CO$
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$Na_2CO_3$
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$CaCO_3$

Explanation

$\underset{sodium \, ethanoate}{CH_3 - COONa} \xrightarrow[\Delta]{Soda-lime (mixture \, of \, NaOH \, and \, CaO \,in \, 3 : 1 \, ratio)} \underset{Methane}{CH_4} + Na_2CO_3$

Fullerene is an allotrope of carbon which is similar to a football. It has 60 carbon atoms joined together and no other element in it. There are various types of fullerenes.

$C_{60}, C_{70}, C_{74}$ and

$C_{75}$ are the members of the fullerene family. But

$C_{60}$ (pronounced as C sixty) is the most stable and most studied form of fullerenes. What do you think is the nature of the bond which is joining these atoms together?

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Ionic
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Covalent
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Hydrogen
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Co-ordinate

Which of the following is/are saturated hydrocarbon?

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$C_2H_6$
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$C_2H_4$
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$C_2H_5$
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All of these

Explanation

The general formula for saturated hydrocarbons is

$C_nH_{2n+2}$ .

Alkane -

$C_nH_{2n+2}$
Alkene -

$C_nH_{2n}$
Alkyene -

$C_nH_{2n-2}$

So,

$C_2H_6$ is saturated hydrocarbon.

The main reasons for the huge number of organic compounds are :

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catenation property of carbon
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tetravalency of carbon
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tendency of carbon to form multiple bonds
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all of these

Crystalline fullerene has __________ properties.

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semiconducting
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insulating
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both $A$ and $B$
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none of these

Explanation

Fullerene is an allotrope of carbon in the form of hollow sphere and called as buckyballs.

$C-60$ is the crystalline form and is used as semiconductor.

Which of the following does not belong to homologous series of alkanes?

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$C_2H_6$
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$C_3H_4$
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$C_4H_{10}$
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$C_5H_{12}$

Explanation

Alkanes have the general formula

$C_{n}H_{2n+2}$ .

Thus,

$C_{3}H_{4}$ does not belong to homologous series of alkanes.

The general formula for saturated hydrocarbons is :

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$C_nH_{2n+2}$
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$C_nH_{2n}$
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$C_nH_{2n-2}$
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$C_nH_{2n-n}$

Explanation

General formula of alkanes is

${ C }_{ n }{ H }_{ 2n+2 }$ , where n is the no. of carbon atoms.

In order to form branching, a saturated organic compound must have a minimum of:

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four carbon atoms
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three carbon atoms
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five carbon atoms
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any number of carbon atoms

The most common fullerene is

$C_{60}$ . 60 carbon atoms are arranged in ______ pentagons and ______ hexagons.

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$12, 20$
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$16, 26$
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$12, 40$
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$16, 40$

Chemically, diamond is:

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a mixture of metal carbonates
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pure carbon
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a pure form of sand
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a mixture of calcium and magnesium phosphates

Which of the following statement is true for graphite?

(a) In graphite, each carbon atom is bonded to four other carbon atoms.
(b) Graphite is very hard.
(c) It is a good conductor of electricity.
(d) It is a bad conductor of electricity.

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a, b and d
0%
only c
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a and d
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a and c

The long hydrocarbon chain in soap is water-repelling (hydrophobic), which is called:

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polar tail
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ring chain
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non-polar tail
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none of the above

Which of the following substance has bitter taste?

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Milk
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Amla
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Soap solution
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Salt solution

Which of the following substance is made up of only one element?

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Diamond
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Glass
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Marble
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Sand

Carbon is less reactive than

$O_2, Cl_2$ etc. because:

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it is a non-metal having low valency.
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the covalent bonds between various carbon atoms are very strong.
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it is black.
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none of the above

Fullerene, an allotrope of carbon, has 60 carbon atoms joined together and no other element in it. There are various types of fullerenes.

$C_{60}, C_{70}, C_{74}$ and

$C_{78}$ are the members of the fullerene family. Identify the property due to which such large numbers of carbon atoms are joined together in this molecule :

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Isomerism
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Homologous
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Catenation
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Metamerism

Which of the following compounds is a soap?

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$CH_3(CH_2)_{16}CONa$
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$CH_3(CH_2)_{16}COONa$
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$CH_3(CH_2)_{16}COOH$
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$CH_3(CH_2)_{16}COOCH_3$

Explanation

$CH_{3}(CH_{2})_{16}COONa$ is a soap as soaps are the sodium salts of carboxylic acids and thus will have

$-COONa$ in their structures.

Which of the following is used in making printer ink, shoe polish, and black varnish?

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Lamp black
0%
Bone black
0%
Carbon black
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None of the above

Which of the following is not a covalent compound?

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$CO_2$
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$Cl_2$
0%
$Na_2O$
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$CH_4$

Explanation

$Na_2O$ is ionic because the valence electron of sodium is 1 so two molecules of sodium gives two electrons to oxygen which is in need of 2 electrons. It is formed by transfer of electrons.

Diamond on burning in oxygen gives:

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$CO$
0%
$Ca{(OH)}_{2}$
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${CO}_{2}$
0%
$CaO$

Explanation

Diamond is pure crystalline carbon. When it is strongly heated in the presence of oxygen (air), the carbon will react with the oxygen to form carbon dioxide

$(CO_{2})$ gas.

The allotrope of carbon used in nuclear reactors is :

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graphite
0%
diamond
0%
coke
0%
sugar charcoal

CBSE Questions for Class 10 Chemistry Carbon And Its Compounds Quiz 4 - MCQExams.com

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Practice Class 10 Chemistry Quiz Questions and Answers

CBSE Questions for Class 10 Chemistry Carbon And Its Compounds Quiz 4 - MCQExams.com

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Practice Class 10 Chemistry Quiz Questions and Answers

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