Carbon and its Compounds Test

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Carbon and its Compounds Test - 24

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Weekly Quiz Competition

Question 1
1 / -0

Crystalline form of carbon having 60 carbon atoms joined together is called :

A
graphite

B
buckminsterfullerene

C
coal

D
diamond

Solution

Buckminsterfullerene is a spherical fullerene molecule with the formula C-60. It has a cage-like fused ring structure that resembles a soccer ball made of hexagons and pentagons with a C atom at each vertex.
Question 2
1 / -0

Some elements show the property of existing in two or more distinct physical form which show different physical properties but same chemical properties. These distinct forms of an element are called :

A
isomers

B
allotropes

C
compounds

D
isobars

Solution

Allotropes of carbon have a different physical form but chemically they are similar, e.g., diamond and graphite are allotropes of carbon which are chemically carbon compounds but physically diamond is the hardest material known while graphite is soft material.

Hence, option $$B$$ is correct,
Question 3
1 / -0

An allotropic form of carbon used for cutting and drilling is :

A
charcoal

B
bone charcoal

C
graphite

D
diamond

Solution

Diamond is the hardest allotrope of carbon so it is used for cutting or drilling purpose.
Question 4
1 / -0

Incomplete combustion of fuel produces:

A
$$CO_2$$

B
$$CO$$

C
$$H_2O$$

D
$$H_2$$

Solution

A reaction or process which entails only partial burning of a fuel. This may be due to a lack of oxygen or low temperature preventing the complete chemical reaction. $$CO$$ is produced as a byproduct of incomplete combustion of carbon.
Question 5
1 / -0

The allotrope of carbon which is a good conductor of heat and electricity is:

A
diamond

B
sugar charcoal

C
graphite

D
wood charcoal

Solution

Graphite is an allotrope of carbon, other than diamond. It is a non-metal but still is a good conductor of heat and electricity.
Question 6
1 / -0

In which of the following are all carbon atoms only triple bonded?

A
$$C_3H_6$$

B
$$C_2H_4$$

C
$$C_2H_2$$

D
$$C_2H_6$$

Solution

$$C_3H_6 : \begin{matrix}&&H\\&&|\\H&-&C&-&C&=&C&-&H\\&&|&&|&&|\\&&H&&H&&H\end{matrix}$$

$$C_2H_4 : \begin{matrix}H&-&C&=&C&-&H\\&&|&&|\\&&H&&H\end{matrix}$$

$$C_2H_2 : H-C\equiv C-H$$

$$C_2H_6 : \begin{matrix}&&H&&H\\&&|&&|\\H&-&C&-&C&-&H\\&&|&&|\\&&H&&H\end{matrix}$$
In the compound $$C_2H_2$$, the carbon atoms are only triply bonded.
Question 7
1 / -0

Which of the following compounds behave as an unsaturated hydrocarbon?

A
Butane

B
Ethane

C
Ethyl alcohol

D
Ethene

Solution

Unsaturated hydrocarbons are hydrocarbons that have double or triple covalent bonds between adjacent carbon atoms. Those with at least one carbon to carbon double bond are called alkenes and those with at least one carbon to carbon triple bond are called alkynes.

Hene, option D is correct.
Question 8
1 / -0

Complete combustion of hydrocarbon produces :

A
$$CO+H_2O$$

B
$$CO+H_2$$

C
$$CO_2+H$$

D
$$CO_2+H_2O$$

Solution

Hydrocarbons undergo complete combustion when a sufficient amount of oxygen is available. During the complete combustion of hydrocarbons, carbon dioxide and water are formed.
For example: $$CH_{4\;}+\;2O_{2\;}\rightarrow\;CO_2\;+\;2H_2O$$
When an insufficient amount of oxygen is present incomplete combustion occurs, and the products are carbon monoxide, water, and carbon. So the correct option is D.
Question 9
1 / -0

What type of reaction occurs between ethene and hydrogen?

A
Addition

B
Dehydration

C
Substitution

D
Oxidation

Solution

In addition reaction, unsaturated hydrocarbon adds hydrogen and gets converted into saturated hydrocarbon. In this reaction, ethene (an unsaturated hydrocarbon), when reacts with hydrogen, gets converted into saturated hydrocarbon.
Question 10
1 / -0

The organic acid present in vinegar is :

A
methanoic acid

B
ethanoic acid

C
propanoic acid

D
none of these

Solution

Vinegar is also known as acetic acid and water. Acetic acid is ethanoic acid produced by the fermentation of ethanol by acetic acid bacteria. Vinegar is a cooking ingredient and commercially produced by fast or slow fermentation processes.

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Re-Attempt Weekly Quiz Competition

Carbon and its Compounds Test - 24

Result

Carbon and its Compounds Test - 24

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SHARING IS CARING

Question 1

graphite

buckminsterfullerene

coal

diamond

Solution

Question 2

isomers

allotropes

compounds

isobars

Solution

Question 3

charcoal

bone charcoal

graphite

diamond

Solution

Question 4

$$CO_2$$

$$CO$$

$$H_2O$$

$$H_2$$

Solution

Question 5

diamond

sugar charcoal

graphite

wood charcoal

Solution

Question 6

$$C_3H_6$$

$$C_2H_4$$

$$C_2H_2$$

$$C_2H_6$$

Solution

Question 7

Butane

Ethane

Ethyl alcohol

Ethene

Solution

Question 8

$$CO+H_2O$$

$$CO+H_2$$

$$CO_2+H$$

$$CO_2+H_2O$$

Solution

Question 9

Addition

Dehydration

Substitution

Oxidation

Solution

Question 10

methanoic acid

ethanoic acid

propanoic acid

none of these

Solution

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