Which one of the following elements has the highest - first ionization potential

1.  Boron

2.  Carbon

3.  Nitrogen

4.  Oxygen

View Answer  
4
Correct Answer :

Nitrogen


Explanation :
No Explanation available for this question

Of the following, the one with largest size is:

1.  Cl-

2.  Ar

3.  K+

4.  Ca2+

View Answer  
4
Correct Answer :

Cl<sup>-</sup>


Explanation :
No Explanation available for this question

The reagent that gives an orange coloured precipitate with acetaldehyde:

1.  NH2OH

2.  NaHSO3

3.  iodine

4.  2,4-DNP

View Answer  
4
Correct Answer :

2,4-DNP


Explanation :
No Explanation available for this question

The hybridization state of carbon atoms in the product formed by the reaction of ethyl chloride with aqueous KOH is:

1.  sp

2.  sp2

3.  sp3

4.  sp3d

View Answer  
4
Correct Answer :

sp<sup>3</sup>


Explanation :
No Explanation available for this question

The atomic number of a radioactive element increases by one unit in:

1.  alpha emission

2.  beta emission

3.  gamma emission

4.  electron capture

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4
Correct Answer :

beta emission


Explanation :
No Explanation available for this question

Which one of the following compound is Lewis acid

1.  PCl3

2.  BCl3

3.  NCl3

4.  CHCl3

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4
Correct Answer :

BCl<sub>3</sub>


Explanation :
No Explanation available for this question

The alkane that yields two isomeric monobromo derivatives:

1.  neo pentane

2.  ethane

3.  methane

4.  propane

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4
Correct Answer :

propane


Explanation :
No Explanation available for this question

The alcohol that produces turbidity immediately with ZnCl2/conc. HCl at room temperature:

1.  1-hydroxybutane

2.  2-hydroxybutane

3.  2-hydroxy-2-methyl propane

4.  1-hydroxy-2-methyl propane

View Answer  
4
Correct Answer :

2-hydroxy-2-methyl propane


Explanation :
No Explanation available for this question

Ethyl chloride on heating with silver cyanide forms a compound X. The functional isomer of X is:

1.  C2H5NC

2.  C2H5CN

3.  H3C-NH-CH3

4.  C2H5NH2

View Answer  
4
Correct Answer :

C<sub>2</sub>H<sub>5</sub>CN


Explanation :
No Explanation available for this question

In the complete combustion of butanol C4H9OH (I) if ΔH is enthalpy of combustion and ΔE is the heat of combustion at constant volume, then:

1.  ΔH < ΔE

2.  ΔH = ΔE

3.  ΔH > ΔE

4.  ΔH, ΔE relation cannot be predicted

View Answer  
4
Correct Answer :

&#916;H &gt; &#916;E


Explanation :
No Explanation available for this question
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