Chemistry
Select the correct answer from the choice in bracket to complete each sentence.
The acid …………… [dil.H2SO4, dil. HNO3, dil. HCl] is not used in the laboratory preparation of hydrogen, using zinc and an acid.
In Bosch process the catalytic reduction of steam to hydrogen is carried out by …………… [CO2, CO, C].
A foul smelling gas formed when hydrogen reacts with a molten non-metal is …………… [hydrogen chloride, hydrogen sulphide, ammonia].
The product formed on combustion of hydrogen in air is …………… [water gas, water, producer gas].
The gas which has now replaced hydrogen in air balloons is …………… [argon, helium, neon]
Hydrogen
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Answer
The acid dil. HNO3 is not used in the laboratory preparation of hydrogen, using zinc and an acid.
In Bosch process the catalytic reduction of steam to hydrogen is carried out by CO .
A foul smelling gas formed when hydrogen reacts with a molten non-metal is hydrogen sulphide.
The product formed on combustion of hydrogen in air is water.
The gas which has now replaced hydrogen in air balloons is helium.
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Related Questions
Give balanced equations for the following conversions:
Zinc to sodium zincate - using an alkali.
Acidified water to hydrogen - by electrolysis.
Water gas to hydrogen - industrially.
Iron [III] oxide to iron - using hydrogen.
Nitrogen to a basic gas - using hydrogen.
Give reasons for the following:
Copper does not displace hydrogen from dilute hydrochloric acid, but zinc does.
In the preparation of hydrogen by electrolysis of water - the distilled water used is acidified.
In the laboratory preparation of hydrogen from zinc and dilute hydrochloric acid the zinc used is granulated zinc.
In Bosch process - the final gaseous products are passed through caustic potash [KOH] soln.
The reaction of chlorine with hydrogen sulphide is deemed a redox reaction.
Select the correct answer from A, B, C, D or E for each statement given below:
A: Nickel
B: Sodium
C: Iron
D: Iron [III] oxide
E: Magnesium oxide
A metal which reacts with water to give a metallic hydroxide & liberate hydrogen.
The metallic compound used as a catalyst in Bosch process.
The metal used as a catalyst in hydrogenation of oils.
The metal which reacts with steam liberating hydrogen & the reaction is reversible.
The metallic compound formed when a metal above aluminium in the activity series reacts with steam.
Match the statements in List I with the appropriate answer in List II.
List I List II 1. An atom of hydrogen A: Chromic oxide 2. A strong oxidising agent B: Ammonia 3. A promoter used in Bosch process C: Iron 4. A chemical used in the manufacture of fertilizers D: One electron 5. The catalyst used in production of a basic gas from nitrogen E: Dilute nitric acid