GCSE - Gcse Chemistry - Reversible And Irreversible Reactions Solution - MCQGeeks.com

Q.1.

When a reversible reaction reaches equilibrium...

0%
the reverse reaction is happening more quickly than the forward reaction
0%
the forward reaction is happening more quickly than the reverse reaction
50%
the forward reaction is happening at the same rate as the reverse reaction
50%
the reverse reaction is happening slower than the forward reaction

Q.2.

Pick the correct combination for how we represent reversible and irreversible reactions.

0%
reversible ⇌ irreversible →
0%
reversible ← irreversible →
100%
reversible ⇌ irreversible ←
0%
irreversible ⇌ reversible →

Q.3.

Which of the following reactions is reversible?

0%
Combustion
0%
Neutralisation
50%
The Haber process
50%
Boiling an egg

Q.4.

Which of the following reactions is irreversible?

0%
Reaction between anhydrous copper sulfate and water
0%
Decomposition of ammonium chloride
100%
Reaction between sodium and water
0%
Reaction between hydrogen and nitrogen

Q.5.

If a reversible reaction is exothermic in the forward direction, it will be...

0%
exothermic in the reverse direction
50%
endothermic in the forward direction
50%
endothermic in the reverse direction
0%
not involve energy in the reverse direction

Q.6.

A reversible reaction is...

100%
a reaction that can proceed in both directions
0%
a reaction that can only go in one direction
0%
a reaction that can only go backwards
0%
a reaction that does not happen

Q.7.

Why is a reaction described as irreversible?

50%
The products cannot be turned directly back into the reactants
0%
You need to apply heat to make the reaction work
0%
The products can be turned back into the reactants
50%
The reactants cannot be turned into the products

Q.8.

Which of the following is reversible?

0%
Frying a potato
100%
Melting an ice cube
0%
Making toast
0%
Baking a cake

Q.9.

Which of the following equations is CORRECT?

0%
Sugar ← water + carbon
0%
Anhydrous copper sulfate → copper sulfate + water
0%
Sodium hydrogencarbonate ⇌ sodium carbonate + carbon dioxide + water
100%
Calcium carbonate → calcium oxide + carbon dioxide

Q.10.

Which of the following equations is NOT correct?

0%
CuCO3 → CuO + CO2
0%
2Mg + O2 → 2MgO
50%
NH4Cl → NH3 + HCl
50%
CH4 + 2O2 → CO2 + 2H2O