Carbon and its Compounds Test

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Carbon and its Compounds Test - 23

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following substance has bitter taste?

A
Milk

B
Amla

C
Soap solution

D
Salt solution

Solution

Soaps are obtained by treating vegetable or animal oils and fats with a strong alkaline solution. Basic solutions are bitter in taste.
Question 2
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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 :

A
Isomerism

B
Homologous

C
Catenation

D
Metamerism

Solution

Catenation is a self-linking property which is maximum present in carbon, because of this property large number of carbon atoms joined together to form molecule.
Question 3
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Which of the following substance is made up of only one element?

A
Diamond

B
Glass

C
Marble

D
Sand

Solution

Diamond is an allotrope of carbon and is therefore, made up of one element, carbon. Glass, on the other hand, is mainly composed of silica and sodium carbonate. Marble is mainly calcium carbonate and sand is composed of silicon dioxide.
Question 4
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Carbon is less reactive than $$O_2, Cl_2$$ etc. because:

A
it is a non-metal having low valency.

B
the covalent bonds between various carbon atoms are very strong.

C
it is black.

D
none of the above

Solution

It is because the covalent bonds between various carbon atoms are very strong.
Hence, option B is correct.
Question 5
1 / -0

Which of the following compounds is a soap?

A
$$CH_3(CH_2)_{16}CONa$$

B
$$CH_3(CH_2)_{16}COONa$$

C
$$CH_3(CH_2)_{16}COOH$$

D
$$CH_3(CH_2)_{16}COOCH_3$$

Solution

$$CH_{3}(CH_{2})_{16}COONa$$ is a soap as soaps are the sodium salts of carboxylic acids and thus will have $$-COONa$$ in their structures.
Question 6
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Which of the following is not a covalent compound?

A
$$CO_2$$

B
$$Cl_2$$

C
$$Na_2O$$

D
$$CH_4$$

Solution

$$Na_2O$$ 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.
Question 7
1 / -0

Diamond on burning in oxygen gives:

A
$$CO$$

B
$$Ca{(OH)}_{2}$$

C
$${CO}_{2}$$

D
$$CaO$$

Solution

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.
Question 8
1 / -0

The allotrope of carbon used in nuclear reactors is :

A
graphite

B
diamond

C
coke

D
sugar charcoal

Solution

Graphite is used as a neutron moderator within a nuclear reactor. They reduce the speed of neutrons and make the nuclear reaction sustain.
Question 9
1 / -0

Which of the following pair of carbon compounds will undergo combustion as well as addition reaction?

A
$$CH_4$$ and $$C_2H_6$$

B
$$C_2H_5OH$$ and $$C_2H_6$$

C
$$C_3H_8$$ and $$CH_4$$

D
$$C_2H_2$$ and $$C_3H_6$$

Solution

All organic compounds give a combustion reaction but only unsaturated hydrocarbons, like alkenes and alkynes, undergo an addition reaction.

A) $$CH_4$$ and $$CH_3-CH_3$$ both are saturated hydrocarbons.
B) $$CH_3-CH_2-OH$$ and $$CH_3-CH_3$$ both are saturated hydrocarbons.
C) $$CH_3-CH_2-CH_3 $$ and $$CH_4$$ both are saturated hydrocarbons.
D) $$CH\equiv CH$$ and $$CH_2=CH-CH_3$$ both are unsaturated hydrocarbons.

Hence, option D is correct.
Question 10
1 / -0

In which of the following substances, carbon atoms are arranged in a regular tetrahedral structure?

A
Diamond

B
Benzene

C
Graphite

D
Carbon black

Solution

In diamond, carbon atoms are arranged in a regular tetrahedral structure. Each carbon atom is bonded to four other carbon atoms.

In benzene, six carbon atoms form a hexagon.

Graphite is made of hexagonal arrays of carbon atoms placed in layers one above the other. Carbon black also has a similar structure to graphite but the molecules are less orderly arranged.

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Re-Attempt Weekly Quiz Competition

Carbon and its Compounds Test - 23

Result

Carbon and its Compounds Test - 23

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Question 1

Milk

Amla

Soap solution

Salt solution

Solution

Question 2

Isomerism

Homologous

Catenation

Metamerism

Solution

Question 3

Diamond

Glass

Marble

Sand

Solution

Question 4

it is a non-metal having low valency.

the covalent bonds between various carbon atoms are very strong.

it is black.

none of the above

Solution

Question 5

$$CH_3(CH_2)_{16}CONa$$

$$CH_3(CH_2)_{16}COONa$$

$$CH_3(CH_2)_{16}COOH$$

$$CH_3(CH_2)_{16}COOCH_3$$

Solution

Question 6

$$CO_2$$

$$Cl_2$$

$$Na_2O$$

$$CH_4$$

Solution

Question 7

$$CO$$

$$Ca{(OH)}_{2}$$

$${CO}_{2}$$

$$CaO$$

Solution

Question 8

graphite

diamond

coke

sugar charcoal

Solution

Question 9

$$CH_4$$ and $$C_2H_6$$

$$C_2H_5OH$$ and $$C_2H_6$$

$$C_3H_8$$ and $$CH_4$$

$$C_2H_2$$ and $$C_3H_6$$

Solution

Question 10

Diamond

Benzene

Graphite

Carbon black

Solution

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