The surface tension of which of the following liquid is maximum

1.  H2O

2.  C6H6

3.  CH3OH

4.  C2H5OH

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4
Correct Answer :

H2O


Explanation :
No Explanation available for this question

The absolute enthalpy of neutralisation of the reaction : MgO(s) + 2HCl(aq) → MgCl2(aq) + H2O(l) will be :

1.  less than - 57.33 kJ mol-1

2.  - 57.33 kJ mol-1

3.  greater than -57.33 kJ mol-l

4.  57.33 kJ mol-1

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4
Correct Answer :

less than - 57.33 kJ mol-1


Explanation :
No Explanation available for this question

Which one of the following forms micelles in aqueous solution above certain concentration

1.  Urea

2.  Dodecyl trimethyl ammonium chloride

3.  Pyridinium chloride

4.  Glucose

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4
Correct Answer :

Dodecyl trimethyl ammonium chloride


Explanation :
No Explanation available for this question

Electrolytic reduction of nitrobenzene weakly acidic medium gives :

1.  aniline

2.  nitrosobenzene

3.  N-phenylhydroxylamine

4.  p-hydroxyaniline

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4
Correct Answer :

N-phenylhydroxylamine


Explanation :
No Explanation available for this question

Which of the following would have a permanent dipole moment

1.  BF3

2.  SiF4

3.  SF4

4.  XeF4

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4
Correct Answer :

SF4


Explanation :
No Explanation available for this question

Which of the following undergoes nucleophilic substitution exclusively by SN1 mechanism

1.  Benzyl chloride

2.  Ethyl chlorcide

3.  Chlorobenzene

4.  Isopropyl chloride

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4
Correct Answer :

Benzyl chloride


Explanation :
No Explanation available for this question

The rate of reaction between two reactants A and B decreases by a factor of 4, if the concentration of reactant B is doubled. The order of this reaction with respect to reactant B is :

1.  -1

2.  -2

3.  1

4.  2

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4
Correct Answer :

-2


Explanation :
No Explanation available for this question

In a face-centered cubic lattice, a unit cell is shared equally by how many unit cells

1.  8

2.  4

3.  2

4.  6

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4
Correct Answer :

6


Explanation :
No Explanation available for this question

Which functional group participates in disulphide bond formation in proteins

1.  Thiolactone

2.  Thiol

3.  Thioether

4.  Thioester

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4
Correct Answer :

Thiol


Explanation :
No Explanation available for this question

Which one of the following is an inner orbital complex as well as diamagnetic in behaviour (Atomic no. : Zn = 30, Cr = 24, Co = 27, Ni = 28)

1.  [Zn (NH3)6]2+

2.  [Cr (NH3)6]3+

3.  [Co (NH3)6]3+

4.  [Ni (NH3)6]2+

View Answer  
4
Correct Answer :

[Co (NH3)6]3+


Explanation :
No Explanation available for this question
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