0.12g of an organic compound containing phosporus gave 0.22g of Mg2P2O7 by usual anaysis. Calculate the percentage of phosphorus in the compound.

1.  65%

2.  61%

3.  58%

4.  51.20%

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4
Correct Answer :

51.20\%


Explanation :
No Explanation available for this question

The free radicals resulting from the cleavage of a bond are

1.  Non- magnetic

2.  Diamagnetic

3.  Paramagnetic

4.  None of these

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4
Correct Answer :

Paramagnetic


Explanation :
No Explanation available for this question

The number of contributing resonance structure contributes to

1.  Potential energy

2.  Bond energy

3.  Kinetic energy

4.  Resonance energy

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4
Correct Answer :

Resonance energy


Explanation :
No Explanation available for this question

Identify the molecule which is NOT a nucleophile from the following

1.  H2O

2.  AlCl3

3.  R-NH2

4.  NH3

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4
Correct Answer :

AlCl3


Explanation :
No Explanation available for this question

Which of the following names is not correct in the IUPAC system of nomenclature

1.  Pent - 3 yne

2.  4, 4, 3- trimethylhex - 1 – yne

3.  1, 6 – hexadiene

4.  Octane -1, 2, - diol

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4
Correct Answer :

1, 6 – hexadiene


Explanation :
No Explanation available for this question

In Lassaigne method, the elements of the organic compound are fused with metallic

1.  Potassium

2.  Magnesium

3.  Lithium

4.  Sodium

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4
Correct Answer :

Sodium


Explanation :
No Explanation available for this question

0.2325g of an organic compound was analysed for nitrogen by Duma's method. 31.7mL of moist nitrogen was collected at 250C and 755.8 mm of Hg pressure. Calculate the percentage of nitrogen in the sample (Aq.tension of water at 250C is 23.8mm of Hg)

1.  18 %

2.  19.7%

3.  15.1%

4.  20.2%

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4
Correct Answer :

15.1\%


Explanation :
No Explanation available for this question

The formation of ______ precipitate which is insoluble in ammonium hydroxide confirms the presence of iodine

1.  White

2.  Yellow

3.  Orange colour

4.  Green

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4
Correct Answer :

Yellow


Explanation :
No Explanation available for this question

Copper sulphate crystals are

1.  Prismatic

2.  Cubical

3.  Octahedral

4.  Needle shaped

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4
Correct Answer :

Prismatic


Explanation :
No Explanation available for this question

An organic compound containing C, H and N give the following result on analysis C = 40 %, H = 13.33 % and N = 46.67 % what would be the empirical formula

1.  C2H7N

2.  C2H7N2

3.  CH4N

4.  CH3N

View Answer  
4
Correct Answer :

CH4N


Explanation :
No Explanation available for this question
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