Which of the following oxides is not expected to react with sodium hydroxide

1.  CaO

2.  SiO2

3.  BeO

4.  B2O3

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4
Correct Answer :

CaO


Explanation :
No Explanation available for this question

The segment of DNA which acts as the instrumental manual for the synthesis of the protein is:

1.  ribose

2.  gene

3.  nucleoside

4.  Nucleotide

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4
Correct Answer :

gene


Explanation :
No Explanation available for this question

Maximum number of electrons in a subshell of an atom is determined by the following

1.  2 l + 1

2.  4 l - 2

3.  2 n2

4.  4 l + 2

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4
Correct Answer :

4 l + 2


Explanation :
No Explanation available for this question

Which one of the following is employed as a tranquilizer

1.  Naproxen

2.  Tetracycline

3.  Chlorpheninamine

4.  Equanil

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4
Correct Answer :

Equanil


Explanation :
No Explanation available for this question

Benzene reacts with CH3Cl in the presence of anhydrous AlCl3 to form

1.  Chlorobenzene

2.  Benzylchloride

3.  Xylene

4.  Toluene

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4
Correct Answer :

Toluene


Explanation :
No Explanation available for this question

Propionic acid with Br2| P yields a dibromo product. Its structure would be

1.  

2.  CH2Br - CH2 - COBr

3.  

4.  CH2Br - CHBr – COOH

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4
Correct Answer :


Explanation :
No Explanation available for this question

The values of ΔH and ΔS for the reaction, C(graphite) + CO2 (g) → 2CO(g) are 170 kJ and 170 JK−1, respectively. This reaction will be spontaneous at

1.  910 K

2.  1110 K

3.  510 K

4.  710 K

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4
Correct Answer :

1110 K


Explanation :
No Explanation available for this question

Copper crystallises in a face-centred cubic lattice with a unit cell length of 361 pm. What is the radius of copper atom in pm

1.  157

2.  181

3.  108

4.  128

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4
Correct Answer :

128


Explanation :
No Explanation available for this question

Predict the product :

1.  

2.  

3.  

4.  

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question

H2COH . CH2OH on heating with periodic acid gives:

1.  2 HCOOH

2.  

3.  

4.  2 CO2

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question
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