Chemical Reactions Test

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Chemical Reactions Test - 1

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following subscript is omitted while writing the chemical formula of compound?

A
0

B
1

C
2

D
7
Question 2
1 / -0

What does the delta sign used over an arrow in a chemical equation signify?

A
Reaction is very fast

B
Reaction is very slow

C
Reaction is exothermic

D
Reaction is endothermic
Question 3
1 / -0

Which of the following information is not given by a chemical equation?

A
Physical states of reactants and products

B
Energy changes

C
Mass of the reactants and products

D
Reaction is reversible or irreversible
Question 4
1 / -0

2H₂O₂ →" 2H₂O + O₂

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

A
Combination

B
Decomposition

C
Displacement

D
Double displacement
Question 5
1 / -0

Which of the following decomposition reactions take place in our body?

A
C₆H₁₂O₆ + O₂ → CO₂ + H₂O

B
2Al₂O₃ → 4Al + 3O₂

C
2Pb (NO₃)₂ → 2PbO + 4NO₂ + O₂

D
2H₂O → 2H₂ + O₂
Question 6
1 / -0

Which of the following reactions is a double displacement reaction?

A
Mg + CuSO₄ → MgSO₄ + Cu

B
BaCl₂ + CuSO₄ → BaSO₄ + CuCl₂

C
2KBr + Cl₂ → 2KCl + Br₂

D
NH₄O₂ → N₂ + 2H₂O
Question 7
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 reactions

D
Neutralization reactions
Question 8
1 / -0

What type of chemical reaction takes place when electricity is passed through water?

A
Combination

B
Displacement

C
Decomposition

D
Reduction

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Re-Attempt Weekly Quiz Competition

Chemical Reactions Test - 1

Result

Chemical Reactions Test - 1

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SHARING IS CARING

Question 1

0

1

2

7

Question 2

Reaction is very fast

Reaction is very slow

Reaction is exothermic

Reaction is endothermic

Question 3

Physical states of reactants and products

Energy changes

Mass of the reactants and products

Reaction is reversible or irreversible

Question 4

Combination

Decomposition

Displacement

Double displacement

Question 5

C6H12O6 + O2 → CO2 + H2O

2Al2O3 → 4Al + 3O2

2Pb (NO3)2 → 2PbO + 4NO2 + O2

2H2O → 2H2 + O2

Question 6

Mg + CuSO4 → MgSO4 + Cu

BaCl2 + CuSO4 → BaSO4 + CuCl2

2KBr + Cl2 → 2KCl + Br2

NH4O2 → N2 + 2H2O

Question 7

Irreversible reactions

Reversible reactions

Decomposition reactions

Neutralization reactions

Question 8

Combination

Displacement

Decomposition

Reduction

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C₆H₁₂O₆ + O₂ → CO₂ + H₂O

2Al₂O₃ → 4Al + 3O₂

2Pb (NO₃)₂ → 2PbO + 4NO₂ + O₂

2H₂O → 2H₂ + O₂

Mg + CuSO₄ → MgSO₄ + Cu

BaCl₂ + CuSO₄ → BaSO₄ + CuCl₂

2KBr + Cl₂ → 2KCl + Br₂

NH₄O₂ → N₂ + 2H₂O