The critical temperature of water is higher than that of O2 because H2O molecule has:

1. fewer electrons than oxygen

2. two covalent bonds

3. V-shape

4. dipole moment

Subtopic:  Water |
 62%
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Benzene is oxidized by H2O2 in presence of FeSO4 to:

1. phenol

2. cyclohexane

3. benzaldehyde

4. benzoic acid

Subtopic:  H2O2 (Hydrogen Peroxide) |
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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) |
 59%
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%
From NCERT
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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%
From NCERT
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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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