Hydrogen peroxide is-

1. an oxidising agent

2. a reducing agent

3. both an oxidising and a reducing agent

4. neither oxidising nor reducing agent.

Subtopic:  H2O2 (Hydrogen Peroxide) |
 93%
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Which of the following reactions increases production of dihydrogen from synthesis gas?

1. CH4(g)+H2O(g)Ni1270 KCO(g)+3H2(g)

2. C(s)+H2O(g)1270 KCO(g)+H2(g)

3. CO(g)+H2O(g)Catalyst673 KCO2(g)+H2(g)

4. C2H6+2H2ONi1270 K2CO+5H2

Subtopic:  Preparation & Properties |
 71%
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When sodium peroxide is treated with dilute sulphuric acid, we get _____.

1. Sodium sulphate and water
2. Sodium sulphate and oxygen
3. Sodium sulphate, hydrogen and oxygen
4. Sodium sulphate and hydrogen peroxide

Subtopic:  H2O2 (Hydrogen Peroxide) |
 69%
From NCERT
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Hydrogen peroxide is obtained by the electrolysis of ______.

1.  water

2.  sulphuric acid

3.  hydrochloric acid

4.  fused sodium peroxide

Subtopic:  Preparation & Properties |
 51%
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Which of the following reactions is an example of use of water gas in the synthesis of other compounds?

1.  CH4(g)+H2O(g)Ni1270 KCO(g)+H2(g)

2.  CO(g)+H2O(g)Catalyst673 KCO2(g)+H2(g)

3.  CnH2n+2+nH2O(g)Ni1270 KnCO+(2n+1)H2

4.  CO(g)+2H2(g)CatalystCobaltCH3OH(l)

Subtopic:  Water |
 55%
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Which of the following ions will cause hardness in water sample?

1. Ca2+

2.  Na+

3.  Cl-

4.  K+

Subtopic:  Hard & Soft Water |
 77%
From NCERT
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A water softening reagent among the following is -

1. Ca3(PO4)2

2. Na3PO4

3. Na6P6O18

4. Na2HPO4

Subtopic:  Hard & Soft Water |
 86%
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Elements of which of the following group(s) of periodic table do not form hydrides?

1. Groups 7, 8, 9

2. Group 13

3. Groups 15, 16, 17

4. Group 14

Subtopic:  Type of Hydride |
 90%
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The group that has hydride formed by only one member is -

1.  6

2.  7

3.  8

4.  9

Subtopic:  Type of Hydride |
 81%
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Which of the following statements are not true for hydrogen?

a. It exists as a diatomic molecule.
b. It has one electron in the outermost shell
c.  It can lose an electron to form a cation that can freely exist
d.  It forms a large number of ionic compounds by losing an electron


Choose the correct option

1. (a, b)

2. (b, c)

3. (c, d)

4. (a, d)

Subtopic:  Hydrogen- Types & Isotopes | Preparation & Properties |
 70%
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