Carbon and its Compounds Test

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Carbon and its Compounds Test - 15

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Question 1
1 / -0

$$CH_{3} CH_{2} OH \xrightarrow{Alkaline KMnO4 + Heat}CH_{3} COOH$$
In the above given reaction, alkaline $$KMnO_{4}$$ acts as:

A
reducing agent

B
oxidising agent

C
catalyst

D
dehydrating agent

Solution

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).
Question 2
1 / -0

Buckminsterfullerene is an allotropic form of :

A
phosphorus

B
sulphur

C
carbon

D
tin

Solution

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.
Question 3
1 / -0

During hydrogenation of oil, the catalyst commonly used is:

A
$$Pd$$ on $$CuCl_{2}$$

B
$$Fe$$

C
$$Ni$$

D
$$H_{2}+O_{2} $$

Solution

Nickel is used as a catalyst to hydrogenate vegetable oil at comparatively low temperatures.
Question 4
1 / -0

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

A
$$C_{4}H_{6}$$

B
$$C_{2}H_{6}$$

C
$$CH_{3} OH$$

D
$$HCHO$$

Solution

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 $$C_4H_6$$.
Question 5
1 / -0

Alcoholic beverages contain:

A
Glycerol

B
Ethyl alcohol

C
Methyl alcohol

D
Propyl alcohol

Solution

Alcoholic beverages contain ethyl alcohol (ethanol). Its chemical formula is $$C_2H_5OH$$.
Question 6
1 / -0

When ethane is burnt in excess of air, the products of combustion are?

A
C and $$H_{2}O$$

B
CO and $$H_{2}O$$

C
$$CO_{2}$$ and $$H_{2}$$

D
$$CO_{2}$$ and $$H_{2}O$$

Solution

Equation for combustion of ethane is:
$$2C_{2}H_{6} + 7O_{2} \rightarrow 4CO_{2} + 6H_{2}O$$
Therefore the products formed are carbon dioxide and water.
Question 7
1 / -0

The number of oxygen molecules used in the combustion of $$1$$ molecule of ethanol is?

A
$$1$$

B
$$2$$

C
$$3$$

D
$$4$$

Solution

Balanced equation for combustion of ethanol can be written as:
$$C_{2}H_{5}OH + 3O_{2} \rightarrow 2CO_{2} + 3H_{2}O$$
Therefore, for combustion of $$1$$ molecule of ethanol, $$3$$ molecules of oxygen are required.
Option $$C$$ is correct.
Question 8
1 / -0

Name the type of reaction when ethanol is warmed with ethanoic acid to form ethyl acetate in the presence of concentrated $$H_{2}SO_{4}.$$

A
Esterification reaction

B
Neutralisation reaction

C
Decomposition reaction

D
Double displacement reaction

Solution

Reaction of ethanol with warm ethanoic acid to form ethyl acetate (an ester) and water can be written as:
$$ C_{2}H_{5}OH + CH_{3}COOH \overset{H^{+}}{\rightarrow} CH_{3}COOC_{2}H_{5} + H_{2}O$$
(ethanol) (ethanoic acid) (ester)

The above reaction is an esterification reaction as alcohol and an acid are combined to form an ester.
Question 9
1 / -0

Ethanol reacts with sodium and forms two products. These are:

A
Sodium ethanoate and hydrogen

B
Sodium ethanoate and oxygen

C
Sodium ethoxide and hydrogen

D
Sodium ethoxide and oxygen

Solution

The equation for the reaction between sodium and ethanol can be written as:

$$2CH_{3}CH_{2}OH + 2Na \rightarrow 2CH_{3}CH_{2}ONa + H_{2}$$

Therefore, the products formed are sodium ethoxide and hydrogen.

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

When methane is burnt in an excess of air, the products of combustion are?

A
$$C$$ and $$H_{2}O$$

B
$$CO$$ and $$H_{2}O$$

C
$$CO_{2}$$ and $$H_{2}$$

D
$$CO_{2}$$ and $$H_{2}O$$

Solution

In excess of air, methane undergoes complete combustion to give carbon dioxide and water.
$$CH_{4} + 2O_{2} \rightarrow CO_{2} + 2H_{2}O$$

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Re-Attempt Weekly Quiz Competition

Carbon and its Compounds Test - 15

Result

Carbon and its Compounds Test - 15

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SHARING IS CARING

Question 1

reducing agent

oxidising agent

catalyst

dehydrating agent

Solution

Question 2

phosphorus

sulphur

carbon

tin

Solution

Question 3

$$Pd$$ on $$CuCl_{2}$$

$$Fe$$

$$Ni$$

$$H_{2}+O_{2} $$

Solution

Question 4

$$C_{4}H_{6}$$

$$C_{2}H_{6}$$

$$CH_{3} OH$$

$$HCHO$$

Solution

Question 5

Glycerol

Ethyl alcohol

Methyl alcohol

Propyl alcohol

Solution

Question 6

C and $$H_{2}O$$

CO and $$H_{2}O$$

$$CO_{2}$$ and $$H_{2}$$

$$CO_{2}$$ and $$H_{2}O$$

Solution

Question 7

$$1$$

$$2$$

$$3$$

$$4$$

Solution

Question 8

Esterification reaction

Neutralisation reaction

Decomposition reaction

Double displacement reaction

Solution

Question 9

Sodium ethanoate and hydrogen

Sodium ethanoate and oxygen

Sodium ethoxide and hydrogen

Sodium ethoxide and oxygen

Solution

Question 10

$$C$$ and $$H_{2}O$$

$$CO$$ and $$H_{2}O$$

$$CO_{2}$$ and $$H_{2}$$

$$CO_{2}$$ and $$H_{2}O$$

Solution

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