Which of the folllowing hydrides in covalent

1.  BeH2

2.  CaH2

3.  SrH2

4.  BaH2

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4
Correct Answer :

BeH2


Explanation :
No Explanation available for this question

Oxides and hydroxides of beryllium are ______ in nature

1.  Acidic

2.  Basic

3.  Amphoteric

4.  Neutra

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4
Correct Answer :

Amphoteric


Explanation :
No Explanation available for this question

Metallic ______ is used for making windows of X-ray tubes

1.  Magnesium

2.  Beryllium

3.  Sulphur

4.  Magnalium

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4
Correct Answer :

Beryllium


Explanation :
No Explanation available for this question

In humans, NaCl is a source of .......... for gastric juices

1.  Polynucleic acid

2.  Cl2gas

3.  HCl

4.  Protein

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4
Correct Answer :

HCl


Explanation :
No Explanation available for this question

Amongst the following alkali metals, which is the strongest reducing agent

1.  H

2.  Li

3.  Na

4.  K

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4
Correct Answer :

Li


Explanation :
No Explanation available for this question

Which of the following is the electronic configuration of nitrogen atom in the excited state

1.  

2.  

3.  

4.  

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4
Correct Answer :


Explanation :
No Explanation available for this question

Which of the following is the most electropositive element

1.  Sodium

2.  Lithium

3.  Potassium

4.  Ceasium

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4
Correct Answer :

Ceasium


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

The carbon monoxide molecule may be represented by the following structures exc

1.  

2.  

3.  

4.  

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4
Correct Answer :


Explanation :
No Explanation available for this question

In Lane's process, hydrogen is formed by //

1.  Reaction of steam on hydrocarbons //

2.  Mixing water gas with twice the volume of steam //

3.  Electrolysis of brine solution //

4.  Passing superheated steam over iron fillings //

5.   //

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5
Correct Answer :

Passing superheated steam over iron fillings


Explanation :
No Explanation available for this question
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