6 electrons, 6 protons, and 6 neutrons

6 electrons, 12 protons, and 6 neutrons

12 electrons, 6 protons, and 6 neutrons

18 electrons, 6 protons, and 6 neutrons

MCQ Questions for Class 10 Chemistry Carbon And Its Compounds Quiz 1

During hydrogenation of oil, the catalyst commonly used is:

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$Pd$ on $CuCl_{2}$
0%
$Fe$
0%
$Ni$
0%
$H_{2}+O_{2}$

What is a homologation reaction?

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Conversion of one member of a homologous series to the other compounds.
0%
Breakdown of compounds in a homologous series.
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Conversion of one member of a homologous series to the next member of homologous series.
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None of above

Assertion: In O/W emulsion, soap is mixed.
Reason: Soap reduces surface tension.

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If both assertion and reason are true and reason is the correct explanation of assertion.
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If both assertion and reason are true but reason is not the correct explanation of assertion.
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If assertion is true but reason is false.
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If both assertion and reason are false.

Which of the following will give a pleasant smell of ester when heated with ethanol and a small quantity of sulphuric acid?

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$CH_{2}CH_{2}OH$
0%
$CH_{3}OH$
0%
$CH_{3}COOH$
0%
$CH_{3}CHO$

Explanation

Acetic acid gives a pleasent smell on reaction with ethanol due to the formation of ethyl acetate as :

$CH_{3}COOH + C_{2}H_{5}OH \rightarrow CH_{3}COOC_{2}H_{5} + H_{2}O$

Micelle formation take place when soap is added to water? Will a micelle be formed in other solvents like ethanol also?

0%
True
0%
False

Explanation

Hint: A hydrophobic and hydrophilic end of soap molecules responsible for the formation of Micelle.

Correct Answer:

$B$

Explanation for correct option :

Micelles are formed when soap is added to water. This is because the hydrocarbon chains of a soap molecule are hydrophobic and insoluble in water, but the ionic ends are hydrophilic and soluble in water. Micelles are an aggregate of soap molecules that arrange themselves in a spherical shape in the soap solution.

Micelles will not form in a solvent like ethanol, as the hydrocarbon chain of soap molecules is hydrophobic; hence, not be soluble in an organic solvent like ethanol.

$NaOH+{ C }{ H }_{ 3 }COOH\longrightarrow C{ H }_{ 3 }COONa+{ H }_{ 2 }O$

This reaction is called :

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oxidation reaction
0%
hydrogention reaction
0%
neutralisation reaction
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addition reaction

Explanation

Acid and Base reacts to form Salt and Water. This reaction is called neutralisation reaction. In this, acid is acetic acid and base is sodium hydroxide. Salt (

$CH_3COONa$ ) is formed.

What is the name of the compound shown in the figure?

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1-methyl propane
0%
3-methyl propane
0%
Butane
0%
2-methyl butane

The IUPAC name of the compound

$CH_3CH = CHC \equiv CH$ is :

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pent-4-yn-2-ene
0%
pent-3-en-1-yne
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pent-2-en-4-yne
0%
pent-1-yn-3-ene

Explanation

The IUPAC name of the compound

$CH_3CH = CHC \equiv CH$ is pent-3-en-1-yne.

$\overset{5}{C}H_3 \overset{4}{C}H = \overset{3}{C}H\overset{2}{C} \equiv \overset{1}{C}H$

Hence, the correct option is B.

Which of the following pairs of compounds of carbon will undergo combustion as well as addition reactions?

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$CH_4$ and $C_2H_6$
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$C_2H_6O$ and $C_3H_8O$
0%
$C_2H_4O_2$ and $C_3H_6O$
0%
$C_2H_2$ and $C_3H_6$

Explanation

$C_2H_2$ and

$C_3H_6$ will undergo combustion as well as addition reactions. These are unsaturated compounds with double/triple bonds. Hence they will undergo additional reactions.

Which of the following is known as the Black lead?

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Charcoal
0%
Diamond
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Graphite
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Fullerenes

The primary suffix for

$C$

$\equiv$

$C$ bond is:

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-yne
0%
-ane
0%
-ene
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None of the above

Two neighbours of Homologous series differ by:

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$CH$
0%
$CH_2$
0%
$CH_3$
0%
$CH_4$

Explanation

A homologous series is a series of compounds in which each member differs from the next/previous by

$CH_{2}$ or 14 mass units.

Hence, option B is correct.

Name the structure.

0%
Cyclohexane
0%
Cycloheptane
0%
1-Methylhexane
0%
Hexane

The atomic number of carbon is :

0%
5
0%
6
0%
12
0%
14

Carbon-12 atom has :

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6 electrons, 6 protons, and 6 neutrons
0%
6 electrons, 12 protons, and 6 neutrons
0%
12 electrons, 6 protons, and 6 neutrons
0%
18 electrons, 6 protons, and 6 neutrons

Explanation

The mass number of

$carbon-12$ is

$12$ and the atomic number of carbon is

$6$ . Therefore, the number of protons is

$6$ and electrons are

$6$ as the number of protons and electrons are the same in the neutral atom. The number of neutrons is equal to the difference of a mass number and atomic number, i.e.,

$12-6=6$ .

So carbon-

$12$ atom has

$6$ electrons,

$6$ protons,

$6$ neutrons.

Hence, option

$A$ is correct.

Chemical process that converts one member of a homologous series to the next member is called as:

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homologation reaction
0%
replacement reactions
0%
homogolous reaction
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decomposition reaction

The number of times the substituent group occurs is indicated by :

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suffix
0%
prefix
0%
both A and B
0%
none of above

Explanation

If the same substituent occurs more than once, the location of each point on which the substituent occurs is given. In addition, the number of times the substituent group occurs is indicated by a prefix (di, tri, tetra, etc.).

Option

$B$ is correct.

State whether True or False.

Calcium hydroxide is used for making soap.

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True
0%
False

Which of the following is not an allotropic form of carbon?

0%
Fluorine
0%
Fullerene
0%
Diamond
0%
Graphite

Explanation

Fullerene, graphite and diamond all are different allotropes of carbon.

Fluorine is an entirely different element, whose atomic number is

$9$ . So fluorine is not an allotrope of carbon.

Option A is the correct answer.

Which symbol is used for the element carbon?

0%
$C$
0%
$Ca$
0%
$Cn$
0%
$Co$
0%
$Cu$

Explanation

Elemental carbon is represented by

$C$ .

$Ca$ is calcium,

$Cn$ is copernicium,

$Co$ is cobalt and

$Cu$ is copper.

Hence, the correct option is A.

Which of the following is a saturated hydrocarbon?

0%
$C_2H_2$
0%
$C_2H_4$
0%
$C_2H_6$
0%
$C_4H_4$
0%
$C_6H_{10}$

Explanation

In chemistry, a saturated compound is a chemical compound that has a chain of carbon atoms linked together by single bonds. Alkanes

$(C_nH_{2n+2})$ are saturated hydrocarbons.

In the given options only

$C_2H_6$ is a saturated hydrocarbon as it is an alkane.

Carbon atom is _______ .

0%
monovalent
0%
Divalent
0%
Trivalent
0%
Tetravalent

Which of the following carbon compounds are linked by only single bonds between carbon atoms?

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saturated sompounds
0%
unsaturated compounds
0%
hydrocarbons
0%
none of these

Alcoholic beverages contain:

0%
Glycerol
0%
Ethyl alcohol
0%
Methyl alcohol
0%
Propyl alcohol

Explanation

Alcoholic beverages contain ethyl alcohol (ethanol). Its chemical formula is

$C_2H_5OH$ .

Oils on treating with hydrogen in the presence of palladium or nickel catalyst form fats. This is an example of_________.

0%
addition reaction
0%
substitution reaction
0%
displacement reaction
0%
oxidation reaction

Explanation

Hydrogenation of oils in presence of palladium or nickel catalyst to form fat is an addition reaction.

During hydrogenation, vegetable oils are reacted with hydrogen gas at about

$60^\circ C$ . A nickel catalyst is used to speed up the reaction. The double bonds are converted to single bonds in the reaction. In this way unsaturated fats can be made into saturated fats – they are hardened.

Buckminsterfullerene is an allotropic form of :

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phosphorus
0%
sulphur
0%
carbon
0%
tin

Explanation

Buckminsterfullerene is an allotropic form of carbon with formula

$C_{60}$ . It has carbon atoms arranged in the form of a football. It is soft, slippery, brittle, electrical insulator, and insoluble in water. They are known as buckyballs due to their resemblance with football.

$CH_{3} CH_{2} OH \xrightarrow{Alkaline\ KMnO_4 + Heat}CH_{3} COOH$

In the above given reaction, alkaline

$KMnO_{4}$ acts as:

0%
reducing agent
0%
oxidising agent
0%
catalyst
0%
dehydrating agent

Explanation

In the given reaction;

$CH_{3}CH_{2}OH \xrightarrow[heat]{alkaline\ KMnO_{4}} CH_{3}COOH$

Alkaline

$KMnO_{4}$ acts as an oxidising agent as it oxidises ethanol (alcohol) to form ethanoic acid (an acid).

Homologue of

$C_{3}H_{4}$ is:

0%
$C_{4}H_{6}$
0%
$C_{2}H_{6}$
0%
$CH_{3} OH$
0%
$HCHO$

Explanation

A homologous series is a family of hydrocarbons with similar chemical properties that share the same general formula.

The general formula of the compound in the question is

$C_n H_{2n-2}$ with

$n=3$ .

Only the compound in option

$A$ satisfies the given general formula with

$n=4$ .

So, homologue of

$C_3H_4$ is

$C_4H_6$ .

The soap molecule has a :

0%
hydrophilic head and a hydrophobic tail
0%
hydrophobic head and a hydrophilic tail
0%
hydrophobic head and a hydrophobic tail
0%
hydrophilic head and a hydrophilic tail

Hydrogen chloride molecule contains:

0%
covalent bond
0%
ionic bond
0%
co-ordinate covalent bond
0%
vander waal bond

Explanation

$H-Cl$ bond is a covalent bond. A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms.

CBSE Questions for Class 10 Chemistry Carbon And Its Compounds Quiz 1 - 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 1 - MCQExams.com

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Practice Class 10 Chemistry Quiz Questions and Answers

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