How many litres of oxygen (at STP) are required for complete combustion of 39 g of liquid benzene(Atomic weights: C = 12, O = 16, H = 1)

1.  84

2.  22.4

3.  42

4.  11.2

View Answer  
4
Correct Answer :

84


Explanation :
No Explanation available for this question

Consider the following reactions

1.  A = C2H4, B = C6H6

2.  A = C2H6, B = C6H5NH2

3.  A = C2H4, B = C6H5NH2

4.  A = C6H6, B = C6H5NO2

View Answer  
4
Correct Answer :

A = C<sub>6</sub>H<sub>6</sub>, B = C<sub>6</sub>H<sub>5</sub>NO<sub>2</sub>


Explanation :
No Explanation available for this question

Which one of the following reactions is an example of heterogeneous catalysis

1.  

2.  

3.  

4.  

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4
Correct Answer :


Explanation :
No Explanation available for this question

Hydrolysis of an ester gives a carboxylic acid which on Kolbe's electrolysis yields ethane. The ester is:

1.  methyl ethanoate

2.  methyl methanoate

3.  ethyl methanoate

4.  methyl propanoate

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4
Correct Answer :

methyl ethanoate


Explanation :
No Explanation available for this question

The strongest conjugate base results from:

1.  formic acid

2.  benzoic acid

3.  acetic acid

4.  acetylene

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4
Correct Answer :

acetylene


Explanation :
No Explanation available for this question

The ΔH value for the reactionH2 + CI2 ⇌ 2HCl is -44.12 kcalIf E1 is the activation energy of the reactants and E

1.  E1 > E2

2.  E1 < E2

3.  E1 = E2

4.  ΔH is not related to E1 or E2

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4
Correct Answer :

E<sub>1</sub> &lt; E<sub>2</sub>


Explanation :
No Explanation available for this question

The value of Kp for the reaction 2H2S (g) ⇌ 2H2 (g) + S2 (g) is 1.2 x 10-2 at 10650

1.  1.2 x 10-2

2.  

3.  83

4.  >1.2 x 10-2

View Answer  
4
Correct Answer :

<1.2 x 10<sup>-2</sup>


Explanation :
No Explanation available for this question

Which one of the following metals will not reduce H2O

1.  Ca

2.  Fe

3.  Cu

4.  Li

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4
Correct Answer :

Cu


Explanation :
No Explanation available for this question

In the Bohr hydrogen atom, the electronic transition emitting light of longest wavelength is:

1.  n = 2 to n = 3

2.  n = 4 to n = 3

3.  n = 3 to n = 2

4.  n = 2 to n = 1

View Answer  
4
Correct Answer :

n = 4 to n = 3


Explanation :
No Explanation available for this question

Which one of the following halogens does not exhibit positive oxidation state in its compounds

1.  I

2.  Br

3.  Cl

4.  F

View Answer  
4
Correct Answer :

F


Explanation :
No Explanation available for this question
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