GCSE Chemistry - Separate Chemistry - 4 - Exam Style Questions with Answers

Created on February 08, 2023 By

paruppts12

GCSE_EDE_CHE_5_SEPARATE_4

1 / 10

Hydrogen can be used in a hydrogen-oxygen fuel cell.
Give the name of the product formed in this fuel cell.

Oxygen

Hydroxide

Water

Hydrogen peroxide

2 / 10

Hydrogen fuel cells are often used instead of rechargeable batteries in spacecraft.
Which of the following is not an advantage of using hydrogen fuel cells in spacecraft?

Hydrogen and oxygen are easily made by electrolysis of water

Hydrogen fuel cells are cheap

Water is the only product made in the reaction

Fuel cells operate as long as reactants are supplied

3 / 10

C

D

B

A

4 / 10

Hydrogen-oxygen fuel cells, rather than chemical cells, can be used to power some vehicles.
Give one advantage of using a hydrogen-oxygen fuel cell, rather than using a chemical cell, to power a vehicle.

Voltage constant

Fuel cells have longer life time.

Both A and B

5 / 10

The voltage of a cell is 1.5 V.
Give a reason why this voltage of the cell decreases when the cell is left connected in a circuit.

Product are being used

Reactant are being used

Both A and B

6 / 10

Hydrogen can be used in a hydrogen-oxygen fuel cell.
What does this cell produce?

Water and carbon dioxide

Carbon dioxide only

Hydrogen peroxide

Water only

7 / 10

Hydrogen fuel cells can be used to power trains.
Why could people refer to the hydrogen fuel cell trains as the‘ new' steam trains?

The reaction produces water that can be released as steam

The hydrogen used is extracted from fossil fuels

The hydrogen fuel cell trains are slower than diesel trains

The reaction in the fuel cell is a combustion reaction

8 / 10

Hydrogen fuel cells can be used in lorries and cars.
Which of the following is a potential disadvantage of using hydrogen fuel cells instead of petrol in a car?

Fuel cells are quieter than combustion engines

Fuel cells are smaller than combustion engines

Water is the only product from the reaction

Fuel cells have no moving parts

9 / 10

B

D

A

C

10 / 10

Some batteries are examples of non rechargeable cells.
Why do these batteries eventually go flat?

An equilibrium has been established

The reaction is reversible

The rate of reaction decreased

One of the reactants is used up

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