Hydrogen

Fe + Water gives what

• Iron Oxide
• Hydrogen
• Iron Hydroxide
• Iron and Oxygen

In Bosch process, how is unreacted carbon monoxide separated

• By cooling the mixture
• By passing through ammoniacal cuprous chloride

• By dissolving the mixture in caustic potash

• By reversing the flow of the mixture

Burning of pure hydrogen

• Produces only pop sound

• Produces water
• Produces water with pop sound

• Produces oxygen

Oxidizing agents

• oxygen

• carbon monoxide

• chlorine

• nitric acid

What is the apparatus in electrolysis

• Hoffman's volameter

• Foeman's volameter

• Hoffman's electrometer

• Foeman's electrometer

What are the precautions to be taken in laboratory preparation of hydrogen

• No leakage of gas

• Air should be present in the apparatus

• Nitric acid should be used

• No air in the apparatus

Which element is used in the laboratory preparation of hydrogen

• Iron

• Copper

• Aluminum

• Zinc

Who discovered hydrogen

• Henry Cavendish

• Robert Boyle

• Antoine Lavoisier

Elements which cannot displace hydrogen

• Silver

• Aluminum

• Lead

• Copper

What are the amphoteric metals

• Aluminum

• Lead

• Iron

• Zinc