N S1. The acid[dil.H2SO4, dil. HNO3, dil. HCl) is not used in the laboratorypreparation of hydrogen, using zinc and an acid.2. In Bosch process the catalytic reduction of steam to hydrogen is carried out by[CO2, CO, C]3. A foul smelling gas formed when hydrogen reacts with a molten non-metal,is[hydrogen chloride, hydrogen sulphide, ammonia].4. The product formed on combustion of hydrogen in air is[water gas, water, producer gas].5. The gas which has now replaced hydrogen in air balloons is [argon, helium, neon).

N S1. The acid[dil.H2SO4, dil. HNO3, dil. HCl) is not used in the la

1.	N S1. The acid[dil.H2SO4, dil. HNO3, dil. HCl) is not used in the laboratorypreparation of hydrogen, using zinc and an acid.2. In Bosch process the catalytic reduction of steam to hydrogen is carried out by[CO2, CO, C]3. A foul smelling gas formed when hydrogen reacts with a molten non-metal,is[hydrogen chloride, hydrogen sulphide, ammonia].4. The product formed on combustion of hydrogen in air is[water gas, water, producer gas].5. The gas which has now replaced hydrogen in air balloons is [argon, helium, neon).
Answer» nS1. The acid[dil.H2SO4, dil. HNO3, dil. HCl) is not used in the laboratorypreparation of hydrogen, USING zinc and an acid.2. In Bosch process the catalytic reduction of steam to hydrogen is carried out by[CO2, CO, C]3. A foul SMELLING gas formed when hydrogen reacts with a molten non-metal,is[hydrogen chloride, hydrogen SULPHIDE, ammonia].4. The product formed on combustion of hydrogen in air is[water gas, water, PRODUCER gas].5. The gas which has now replaced hydrogen in air balloons is [argon, helium, neon).