An alkali metal that reacts with nitrogen to form nitride is -

1. Li

2. Na

3. Cs

4. None of the above

Subtopic:  Chemical Properties |
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Caustic soda is:

1. Efflorescent

2. Deliquescent

3. Hygroscopic

4. Oxidant

Subtopic:  Preparations, Properties & Uses of S Block Elements |
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The most basic oxide among the following is:

1. Na2O

2. BaO

3. As2O3

4. Al2O3

Subtopic:  Chemical Properties |
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Pearl ash and caustic potash are chemically:

1. K2CO3 and KOH

2. KOH and K2CO3

3. Na2CO3 and KOH

4. Na2CO3 and NaOH

Subtopic:  Preparations, Properties & Uses of S Block Elements |
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The most dangerous method of precipitating hydrogen would be by the action of HCl on:

1. Zn

2. Fe

3. K

4. Al

Subtopic:  Chemical Properties |
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Which is industrially prepared by the electrolysis of aqueous NaCl?

1. Na2CO3

2. NaHCO3

3. NaOH 

4. NaOCl

Subtopic:  Chemical Properties |
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The products of the electrolysis of aqueous solution of common salt are:

1. Na + Cl2

2. H2 + O2

3. NaOH + H2 + Cl2

4. NaOH + Cl2 + O2

Subtopic:  Physical Properties | Preparations, Properties & Uses of S Block Elements |
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Sodium cannot be extracted by the electrolysis of brine solution because:

1. sodium leberated reacts with water to produce NaOH+H2

2. sodium being more electropositive than hydrogen, H2 is liberated at cathod and not sodium

3. electrolysis cannot take place with brine solution

4. none of the above

Subtopic:  Chemical Properties |
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KO2 is used in oxygen cylinder in space air craft and submarines because it:

1. absorbs CO2 and increase O2 content

2. eliminate moisture

3. absorbs CO2

4. produces O2

Subtopic:  Physical Properties | Chemical Properties |
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Tin dissolves in boiling caustic soda solution because of the formation of soluble:

1. Sn(OH)2

2. Sn(OH)4

3. Na2SnO3

4. none of these

Subtopic:  Preparations, Properties & Uses of S Block Elements |
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