In the reaction between CuO and H2,the hydrogen

1.  Is reduced

2.  Is a catalyst

3.  Loses electrons

4.  Acts as an reducing agent

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4
Correct Answer :

Acts as an reducing agent


Explanation :
No Explanation available for this question

The mixture of CO +H2 is used in the synthesis of

1.  Ether

2.  Ester

3.  Acid

4.  Methanol

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4
Correct Answer :

Methanol


Explanation :
No Explanation available for this question

NaOH melts at

1.  591 K

2.  519 K

3.  5911 K

4.  5191 K

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4
Correct Answer :

591 K


Explanation :
No Explanation available for this question

______ has wide application in purification of sugar

1.  Ca(OH)2

2.  CaCl2

3.  CaO

4.  CaCO3

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4
Correct Answer :

CaO


Explanation :
No Explanation available for this question

O2- ion is stable only in presence of which amongst the following

1.  Li

2.  Na

3.  K

4.  Ca

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4
Correct Answer :

K


Explanation :
No Explanation available for this question

Polarising power of Li+......... . are nearly same

1.  Be++

2.  Mg+2

3.  Al+3

4.  Na+

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4
Correct Answer :

Mg+2


Explanation :
No Explanation available for this question

Sodium and potassium ions are used to maintain constant __________ on either side of the cell wall

1.  Transportation of CO2

2.  Osmotic pressure

3.  Potential difference

4.  Acid- base balance

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4
Correct Answer :

Osmotic pressure


Explanation :
No Explanation available for this question

Which of the following carbonates does not yield CO2 on heating

1.  Li2CO3

2.  Na2CO3

3.  NaHCO3

4.  CaCO3

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4
Correct Answer :

Na2CO3


Explanation :
No Explanation available for this question

KO2(Potassium superoxide) is used in oxygen cylinders in space and submarines because it

1.  Absorbs CO2 and increases O2content

2.  Eliminates moisture

3.  absorbs CO2

4.  Produced ozone

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4
Correct Answer :

Absorbs CO2 and increases O2content


Explanation :
No Explanation available for this question

Excess of sodium result in

1.  Hypertension

2.  Lung infection

3.  Retarded bone growth

4.  Circulatory failure

View Answer  
4
Correct Answer :

Hypertension


Explanation :
No Explanation available for this question
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