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%
From NCERT
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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%
From NCERT
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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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Atomic hydrogen is obtained by:

1. electrolysis of heavy water

2. reaction of water with heavy metals

3. thermal decomposition of water

4. passing silent electric discharge through hydrogen at low pressure

Subtopic:  Hydrogen- Types & Isotopes |
 66%
From NCERT
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Permutit is:

1. hydrated sodium aluminium silicate

2. sodium hexa meta-phosphate

3. sodium silicate

4. sodium meta-aluminate

Subtopic:  Hard & Soft Water |
 68%
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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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The volume strength of 1.5N H2O2 Solution is :

1. 4.8

2. 8.4

3. 3.0

4. 8.0

Subtopic:  H2O2 (Hydrogen Peroxide) |
 61%
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