In the preparation of hydrogenated oil the chemical reaction involved is called as-

1. Hydrogenation

2. Reduction

3. Dehydration

4. Oxidation

Subtopic:  Preparation & Properties |
 87%
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The most abundant isotope of hydrogen is-

1. Tritium

2. Deuterium

3. Protium

4. Para-hydrogen

Subtopic:  Preparation & Properties |
 80%
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Hydrogen is evolved by the action of cold dilute HNO3 on:

1. Fe

2. Mg or Mn

3. Cu

. Al

Subtopic:  Hydrogen- Types & Isotopes | Preparation & Properties |
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Hydrogen is not obtained when zinc reacts with:

1. cold water

2. dil. H2SO4

3. dil HCl

4. hot 20% NaOH

Subtopic:  Hydrogen- Types & Isotopes | Preparation & Properties |
 65%
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Very pure hydrogen (99.9%) can be made by which of the following processes ?

1. Mixing natural hydrocarbons of high molecular weight

2. Electrolysis of water

3. Reaction of salt like hydrides with water

4. Reaction of methane with steam

Subtopic:  Preparation & Properties |
 64%
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The ratio of electron, proton and neutron in tritium is:

1. 1:1:1

2. 1:1:2

3. 2:1:1

4. 1:2:1

Subtopic:  Preparation & Properties |
 82%
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Which of the following pairs will not produce dihydrogen gas ?

1. Cu + HCl (dil.)

2. Fe + H2SO4

3. Mg + steam

4. Na + alcohol

Subtopic:  Preparation & Properties |
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The metal that does not displace hydrogen from an acid is:

1. Hg

2. Zn

3. Al

4. Ca

Subtopic:  Preparation & Properties |
 71%
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The catalyst used in Bosch process of manufacture of H2 is:

1. finely divided Ni

2. V2O5

3. Pd

4. Fe2O3 + Cr2O3

Subtopic:  Preparation & Properties |
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In which reaction hydrogen is not formed ?

(1) Copper and hydrochloric acid

(2) Iron and sulphuric acid

(3) Magnesium and steam

(4) Sodium and alcohol

Subtopic:  Preparation & Properties |
 70%
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