Preparation of Gases Quiz

Which acid is commonly used to prepare hydrogen gas in the laboratory?

• Sulfuric acid

• Nitric acid

• Acetic acid

• Hydrochloric acid

What solid is used along with dilute hydrochloric acid to prepare hydrogen gas?

• Zinc

• Copper

• Sodium

• Iron

How is hydrogen gas collected during its preparation?

• Downward delivery

• Over water

• Upward delivery

• None of the above

Which of the following is a correct test for hydrogen gas?

• Glowing splint relights

• Limewater turns milky

• Popping sound with a burning splint

• Blue litmus turns red

Which gas turns moist red litmus paper blue?

• Carbon dioxide

• Oxygen

• Ammonia

• Hydrogen

Which chemicals are used to prepare oxygen gas?

• Sodium hydroxide and ammonium chloride

• Zinc and hydrochloric acid

• Hydrogen peroxide and manganese dioxide

• Calcium carbonate and hydrochloric acid

What is the role of manganese dioxide in the preparation of oxygen gas?

• Reactant

• Oxidizer

• Catalyst

• Precipitate

What color does red litmus paper turn in ammonia gas?

• Red

• Blue

• No change

• White

Carbon dioxide gas is tested using:

• A burning splint

• Glowing splint

• Moist blue litmus

• Limewater

Which gas supports combustion and relights a glowing splint?

• Hydrogen

• Oxygen

• Carbon dioxide

• Ammonia