Chemical Reactions And Bonding Test

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Chemical Reactions And Bonding Test - 4

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Weekly Quiz Competition

Question 1
1 / -0

When acidity is produced in our stomach, we take antacid which gives relief. Identify the type of reaction in this case.

A
Redox reaction

B
Neutralization reaction

C
Photochemical reaction

D
Reversible reaction
Question 2
1 / -0

Which of the following categories will you place the reaction involving the rusting of iron?

A
Neutralization reaction

B
Oxidation reaction

C
Decomposition reaction

D
Displacement reaction
Question 3
1 / -0

What is released when copper oxide is heated with carbon monoxide?

A
Copper and carbon

B
Copper and carbon dioxide

C
Copper oxide and carbon

D
Copper oxide and carbon dioxide
Question 4
1 / -0

What happens in thermal decomposition?

A
Complex chemical compound breaks into simpler compounds and reunites.

B
Complex chemical compound breaks into simpler components and do not reunite.

C
No breaking of compound occurs.

D
Smaller chemical compounds combine to form a complex chemical compound.
Question 5
1 / -0

When a strip of iron metal is placed in copper sulphate solution, a coating of copper on the iron strip is formed. This is because ____.

A
of addition reaction between iron metal and copper sulphate solution

B
iron displaces copper from copper sulphate solution as in a displacement reaction

C
iron displaces copper from copper sulphate solution as in a double displacement reaction

D
iron is not displaced but copper gets deposited on iron
Question 6
1 / -0

Complete the given reaction by choosing the correct option.

KOH + HNO₃ → _______ + H₂O

A
KNO₃

B
KNO₂

C
K (OH)₂

D
K₂O

Solution

KOH + HNO₃ → KNO₃ + H₂O
Question 7
1 / -0

Complete the given reaction by choosing the correct option.

H₂S + Cl₂ → _______ + 2HCl

A
SO₂

B
SO₃

C
S

D
H₂

Solution

H₂S + Cl₂→ S + 2HCl

In this reaction, hydrogen sulphide is oxidised to sulphur and Cl₂ is reduced to HCl due to addition of a hydrogen atom.
Question 8
1 / -0

Those reactions which proceed in both the directions and result in the formation of a mixture of reactants and products are called ______.

A
irreversible reactions

B
reversible reactions

C
decomposition reaction

D
neutralization reaction

Solution

A reversible reaction is a reaction where the reactants form products, which react together to give the reactants back.
Question 9
1 / -0

Which of the following statements is true for CuO + H₂ → Cu + H₂O?

A
Copper oxide is reduced.

B
Water is oxidized.

C
Hydrogen is reduced.

D
Copper is reduced.
Question 10
1 / -0

2H₂O₂ →2H₂O + O₂

The above equation shows the formation of water and oxygen from hydrogen peroxide. Into which of the following categories would you place the above reaction?

A
Combination

B
Decomposition

C
Displacement

D
Double displacement

Solution

A decomposition reaction is a type of chemical reaction in which a single compound breaks down into two or more elements or new compounds.

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Chemical Reactions And Bonding Test - 4

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Chemical Reactions And Bonding Test - 4

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Question 1

Redox reaction

Neutralization reaction

Photochemical reaction

Reversible reaction

Question 2

Neutralization reaction

Oxidation reaction

Decomposition reaction

Displacement reaction

Question 3

Copper and carbon

Copper and carbon dioxide

Copper oxide and carbon

Copper oxide and carbon dioxide

Question 4

Complex chemical compound breaks into simpler compounds and reunites.

Complex chemical compound breaks into simpler components and do not reunite.

No breaking of compound occurs.

Smaller chemical compounds combine to form a complex chemical compound.

Question 5

of addition reaction between iron metal and copper sulphate solution

iron displaces copper from copper sulphate solution as in a displacement reaction

iron displaces copper from copper sulphate solution as in a double displacement reaction

iron is not displaced but copper gets deposited on iron

Question 6

KNO3

KNO2

K (OH)2

K2O

Solution

Question 7

SO2

SO3

S

H2

Solution

Question 8

irreversible reactions

reversible reactions

decomposition reaction

neutralization reaction

Solution

Question 9

Copper oxide is reduced.

Water is oxidized.

Hydrogen is reduced.

Copper is reduced.

Question 10

Combination

Decomposition

Displacement

Double displacement

Solution

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KNO₃

KNO₂

K (OH)₂

K₂O

SO₂

SO₃

H₂