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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A molten ionic hydride on electrolysis gives:

1. H+ ion moving towards the cathode.

2. H+ ion moving towards the anode.

3. H2 is liberated at anode.

4. H2 is liberated at cathode.

Subtopic:  Type of Hydride |
 51%
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In solid hydrogen, the intermolecular bonding is:

1. ionic

2. van der Waals'

3. metallic

4. covalent

Subtopic:  Type of Hydride |
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The lightest gas is :

1. nitrogen

2. helium

3. oxygen

4. hydrogen

Subtopic:  Hydrogen- Types & Isotopes |
 80%
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10 volumes of H2O2 has a strength of approximately:

1. 3%

2. 30%

3. 10%

4. 5%

Subtopic:  H2O2 (Hydrogen Peroxide) |
 58%
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Which is not true in case of H2O2?

1. It is more stable in basic solution

2. It acts as strong oxidising agent in acid and basic solutions

3. It is decomposed by MnO2

4. It behaves as reducing agent towards KMnO4

Subtopic:  H2O2 (Hydrogen Peroxide) |
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Decmposition of H2O2 is retarded by:

1. acetanilide

2. alcohol

3. H3PO4

4. all of these

Subtopic:  H2O2 (Hydrogen Peroxide) |
 76%
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Density of water is maximum at:

1. 0°C

2. 100 °C

3. 4°C

4. 0 K

Subtopic:  Water |
 72%
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