Which of the following hydrides is most stable

1.  LiH

2.  NaH

3.  KH

4.  CsH

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4
Correct Answer :

LiH


Explanation :
No Explanation available for this question

IA and IIA groups are placed at the ______ of the long form of modern periodic table

1.  Right

2.  Left

3.  Middle

4.  Below

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4
Correct Answer :

Left


Explanation :
No Explanation available for this question

2Na+O2→Na2O2

1.  Sodium oxide

2.  Sodium peroxide

3.  Sodium dioxide

4.  None of these

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4
Correct Answer :

Sodium peroxide


Explanation :
No Explanation available for this question

The correct order of reactivity of alkaline earth metals with water is

1.  Be < Sr < Ca < Mg

2.  Ba > Mg > Ca > Sr

3.  Ra > Sr > Ca > Mg

4.  Mg < Ca < Sr < Ba

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4
Correct Answer :

Mg < Ca < Sr < Ba


Explanation :
No Explanation available for this question

_______ is used as coolant in fast breeder nuclear reactors

1.  Potassium metal

2.  Liquid hydrogen

3.  Liquid sodium metal

4.  Hydrogen

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4
Correct Answer :

Liquid sodium metal


Explanation :
No Explanation available for this question

_____ is a major cation in cytoplasm (inside the cells)

1.  Sodium

2.  Potassium

3.  Aluminium

4.  Calcium

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4
Correct Answer :

Potassium


Explanation :
No Explanation available for this question

_______ acts as reducing agent in the extraction of metal from their oxides where carbon is ineffective

1.  Magnesium

2.  Beryllium

3.  Magnalium

4.  Calcium

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4
Correct Answer :

Calcium


Explanation :
No Explanation available for this question

In the preparation of sodium hydroxide by electrolysis of sodium chloride in castner-Kellner cell, ______ gas is evolved at the anode

1.  Hydrogen

2.  Chlorine

3.  Hydride

4.  Nitogen

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4
Correct Answer :

Chlorine


Explanation :
No Explanation available for this question

Above 373K, washing soda changes to a white powder called

1.  Baking soda

2.  Hydrous washing soda

3.  Charcoal ash

4.  Soda ash

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4
Correct Answer :

Soda ash


Explanation :
No Explanation available for this question

Li combines with nitrogen to form

1.  Li3N

2.  LiN3

3.  LiN2

4.  Li2N

View Answer  
4
Correct Answer :

Li3N


Explanation :
No Explanation available for this question
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