in 16th Century he unknowingly observed that a gas i produced when acids reacts with metals

• Paracelsus

• Robert Boyle

• Henry Cavendish

• Antoine - Lavoisier

Studied reaction between iron filings and dilute acids

• Paracelsus

• Robert Boyle

• Henry Cavendish

• Antoine - Lavoisier

First person to identify Hydrogen as discrete element

• Paracelsus

• Robert Boyle

• Henry Cavendish

• Antoine - Lavoisier

French Chemist and Biologist who named the element Hydrogen

• Paracelsus

• Robert Boyle

• Henry Cavendish

• Antoine - Lavoisier

Hydrogen can be prepared by reacting ​ (a)   ​ ​ reacts with steam​ in presence of ______​ ​ (b)   as a catalyst and heating the mixture at a temperature of ​ 800-1000 ^oC. This process is knows as cracking of hydrocarbon

​

• Methane
• Ethanol
• Carbon
• nickel
• iron

In Electrolysis of acidulated water ​ ________​ (a)   gas is obtained at anode and ​

​ (b)   is obtained at cathode

• oxygen
• hydrogen

What type of reaction is the industrial method of steam reformer process to produce hydrogen?

• Addition reaction

• Decomposition reaction

• Single displacement reaction

• Double displacement reaction

What type of reaction is electrolysis of water to make hydrogen

• Addition reaction

• Decomposition reaction

• Single displacement reaction

• Double displacement reaction

Name the catalyst used in the water gas shift reaction used in industrial production of hydrogen

• Iron

• Lead

• Iron oxide

• Copper

Cryogenic liquids are substances which are in gaseous state at room temperature and pressures, whereas at low temperatures, they are in liquid states. They are extemely cold liquids with boiling point less than _____ ^oC

• -150

• 0

• 150

• -238