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Question 1
• Which one of the following acids is found in the stomach to aid digestion?
Ethanoic acid Sulfuric acid
Nitric acidHydrochloric acid
Water
Question 2
• Which one of the following products is produced when calcium reacts with hydrochloric acid?
Calcium Nitrate Calcium Chloride
Calcium Chlorate
Question 3
• What is the name of the reaction that occurs when an indigestion tablet reacts with excess stomach acid?
Combustion Precipitation
Neutralisation Nitration
Question 4
• The chemical test for hydrogen gas is…
It makes a squeaky pop with a lit splint
It relights a glowing splint
It turns red litmus paper blue
It turns limewater cloudy
Question 5
Which one of the following statements about chlorine gas is untrue?
It is toxic It is used in the manufacture of bleach
It is a green liquid at room temperature
It can be obtained from seawater by electrolysis
Question 6
The chemical test for oxygen gas is..
It turns limewater cloudy
It makes a squeaky pop with a lit splint
It relights a glowing splint
It turns red litmus paper blue
Question 7
• Water can be decomposed to form hydrogen and oxygen using a process called…
Filtration Electrolysis
Thermal decomposition
Polymerisation
Question 9
The chemical test for chlorine gas is
It relights a glowing splint
It makes a squeaky pop
It bleaches damp litmus paper
It stains litmus paper green
Question 10
• If electricity were passed through a solution of hydrochloric acid, what would be the products?
Hydrogen gas only
Hydrogen and chlorine gas
No productsChlorine gas only