Carbon and its Compounds Test

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Carbon and its Compounds Test - 32

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Weekly Quiz Competition

Question 1
1 / -0

In nomenclature of carbon compounds, functional group can be written as __________ .

A
prefix

B
suffix

C
Both a or b

D
None of above

Solution

If a functional group is present, it is indicated in the name of the compound as a prefix or a suffix. For example, in 'propanone', the functional group '-one' is used as suffix. In 'chloropropane', the functional group 'chloro-' is used as prefix.
Question 2
1 / -0

When most fuels burn completely, the products include carbon dioxide and X. What is X?

A
Oxygen

B
Hydrogen

C
Water

D
Hydroxide

E
Hydrogen Peroxide

Solution

When most fuels burn, the products include carbon dioxide and water.
Fuels are hydrocarbons. Complete combustion of hydrocarbons releases carbon dioxide and water.
$$\displaystyle CH_4 + 2O_2 \rightarrow CO_2 + 2H_2O$$
Question 3
1 / -0

Ethane, with the molecular formula $$C_2H_6$$ has:

A
$$6$$ covalent bonds

B
$$7$$ covalent bonds

C
$$8$$ covalent bonds

D
$$9$$ covalent bonds

Solution

Ethane with molecular formula $$C_2H_6$$ has seven covalent bonds. $$6$$ bonds between $$C-H$$ and one is between $$C-C$$. The six hydrogen atoms will each share their 1 electron with carbon to form six carbon-hydrogen covalent bonds. The two carbon atoms will each share their 1 electron to form one carbon-carbon covalent bond.
Question 4
1 / -0

Four covalent bonds are formed by an element in its compounds and that element is:

A
Na

B
Ca

C
C

D
F

E
Li

Solution

Four covalent bonds are formed by an element in its compounds and that element is C.
For example, in methane, $$\displaystyle CH_4$$ , C forms four covalent $$\displaystyle C-H$$ bonds.
Similarly, in carbon tetrachloride, $$\displaystyle CCl_4$$ , C forms four covalent $$\displaystyle C-Cl$$ bonds.
All other elements given in the options form ionic bonds as they are either highly electropositive or highly electronegative elements.
Question 5
1 / -0

Unburnt carbon particles causes:

A
stomach infections

B
respiratory problems

C
throat problems

D
none of these

Solution

Unburnt carbon particles cause respiratory problems. They cause respiratory diseases, such as asthma. Unburnt carbon particles in the air are dangerous pollutants. They are obtained during the incomplete combustion of fuel.
Option B is correct.
Question 6
1 / -0

At standard conditions, X has an allotropic form that is a good electrical conductor. Identify X?

A
Carbon

B
Nitrogen

C
Oxygen

D
Neon

E
Argon

Solution

Carbon has an allotropic form, which is graphite, that is a good conductor of electricity.
Question 7
1 / -0

Carbon monoxide is produced by :

A
incomplete combustion of fuels

B
complete combustion of fuels

C
neutralization of fuels

D
none of these

Solution

Carbon monoxide is produced by incomplete combustion of fuels.
The complete combustion of fuels will give carbon dioxide.

$$\displaystyle C + \dfrac {1}{2}O_2 \rightarrow CO$$

$$\displaystyle C + O_2 \rightarrow CO_2$$
Question 8
1 / -0

Petrol engine gives off gaseous oxides of :

A
silicon

B
phosphorus

C
boron

D
nitrogen

Solution

Petrol engine gives off gaseous oxides of $$\text{nitrogen}$$.
During combustion of fuel at high temperature, nitrogen and oxygen of air combine to form $$NO$$ and $$\displaystyle NO_2$$ and are released with the exhaust gas.
Hence, option $$D$$ is correct.
Question 9
1 / -0

Identify the product(s) which will be formed by using the information provided about the reactants:
$${C}_{4}{H}_{10}(g)+{O}_{2}(g) \rightarrow$$

A
$${C}_{4}{H}_{10}{O}_{2}$$

B
$$CO+{H}+{2}{O}_{2}$$

C
$${8CO}_{2}+{10H}_{2}$$

D
$${C}_{2}{H}_{5}O$$

E
$${CO}_{2}+{H}_{2}{O}_{2}$$

Solution

Butane with oxygen gas undergoes combustion reaction to form carbon dioxide gas and hydrogen gas.
On balancing we get the following equation:
$$2C_4H_{10} + 13O_2 \rightarrow 8CO_2 + 10H_2$$
Question 10
1 / -0

Methane burns in air is ___________.

A
Decomposition

B
Synthesis

C
Combustion

D
Single displacement

E
Double displacement

Solution

Burning of a hydrocarbon in air is called combustion.

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Carbon and its Compounds Test - 32

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Carbon and its Compounds Test - 32

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Question 1

prefix

suffix

Both a or b

None of above

Solution

Question 2

Oxygen

Hydrogen

Water

Hydroxide

Hydrogen Peroxide

Solution

Question 3

$$6$$ covalent bonds

$$7$$ covalent bonds

$$8$$ covalent bonds

$$9$$ covalent bonds

Solution

Question 4

Na

Ca

C

F

Li

Solution

Question 5

stomach infections

respiratory problems

throat problems

none of these

Solution

Question 6

Carbon

Nitrogen

Oxygen

Neon

Argon

Solution

Question 7

incomplete combustion of fuels

complete combustion of fuels

neutralization of fuels

none of these

Solution

Question 8

silicon

phosphorus

boron

nitrogen

Solution

Question 9

$${C}_{4}{H}_{10}{O}_{2}$$

$$CO+{H}+{2}{O}_{2}$$

$${8CO}_{2}+{10H}_{2}$$

$${C}_{2}{H}_{5}O$$

$${CO}_{2}+{H}_{2}{O}_{2}$$

Solution

Question 10

Decomposition

Synthesis

Combustion

Single displacement

Double displacement

Solution

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