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Test: Qualitative & Quantitative Analysis of Organic Compounds (September 19) - NEET MCQ


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10 Questions MCQ Test Daily Test for NEET Preparation - Test: Qualitative & Quantitative Analysis of Organic Compounds (September 19)

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Test: Qualitative & Quantitative Analysis of Organic Compounds (September 19) - Question 1

The presence of carbon in an organic compound can be shown by

Detailed Solution for Test: Qualitative & Quantitative Analysis of Organic Compounds (September 19) - Question 1

Compound when heated with CuO reduces CuO to Cu and oxidises C to CO2 which turns lime water milky.

Test: Qualitative & Quantitative Analysis of Organic Compounds (September 19) - Question 2

The blue compound formed in the positive test for nitrogen with Lassaigne solution of an organic compound is

Detailed Solution for Test: Qualitative & Quantitative Analysis of Organic Compounds (September 19) - Question 2

Ferriferrocyanide is the blue complex formed by sodium ferrocyanide and NaCN.

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Test: Qualitative & Quantitative Analysis of Organic Compounds (September 19) - Question 3

If on adding FeCl3 solution to acidified Lassaigne solution, a blood red colouration is produced, it indicates the presence of

Detailed Solution for Test: Qualitative & Quantitative Analysis of Organic Compounds (September 19) - Question 3

Test: Qualitative & Quantitative Analysis of Organic Compounds (September 19) - Question 4

During sodium extract preparation for Lassaigne's test both N and S present in organic compound change to

Detailed Solution for Test: Qualitative & Quantitative Analysis of Organic Compounds (September 19) - Question 4

Na + C + N + S → NaSCN

Test: Qualitative & Quantitative Analysis of Organic Compounds (September 19) - Question 5

In Duma'smethod 0.52 g of an organic compound on combustion gave 68.6 mL N2 at 27oC and 76 mm pressure. What is the percentage of nitrogen in the compound?

Detailed Solution for Test: Qualitative & Quantitative Analysis of Organic Compounds (September 19) - Question 5

V1 = 68.6 mL, P1 =. 756 mm, T1 = 300 K V2 = ?, P2 = 760 mm, T2 = 273 K

Percentage of nitrogen in organic compound

Test: Qualitative & Quantitative Analysis of Organic Compounds (September 19) - Question 6

In kjeldahl's method of estimation of nitrogen, nitrogen is quantitatively converted to ammonium sulphate. It is the treated with the standard solution of alkali. The nitrogen which is present is estimated as:

Detailed Solution for Test: Qualitative & Quantitative Analysis of Organic Compounds (September 19) - Question 6

When treated with standard solution of alkali nitrogen is liberated as NH3 which is absorbed in H2SO4 to get percentage of nitrogen.

Test: Qualitative & Quantitative Analysis of Organic Compounds (September 19) - Question 7

1.6 g of an organic compound gave 2.6 g of magnesium pyrophosphate. The percentage of phosphorus in the compound is

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Test: Qualitative & Quantitative Analysis of Organic Compounds (September 19) - Question 8

The percentage of oxygen in heavy water is

Detailed Solution for Test: Qualitative & Quantitative Analysis of Organic Compounds (September 19) - Question 8

In D2O percentage of deuterium

% of oxygen - 100 - 20 = 80%

Test: Qualitative & Quantitative Analysis of Organic Compounds (September 19) - Question 9

0.2 g of an organic compound contains C, H and O.On combustion, it yields 0.15 g CO2 and 0.12 g H2O.Ihe percentage of C, H and O respectively is

Detailed Solution for Test: Qualitative & Quantitative Analysis of Organic Compounds (September 19) - Question 9



% of O = 100 - (20 + 6.66) = 73.34%

Test: Qualitative & Quantitative Analysis of Organic Compounds (September 19) - Question 10

0.92 g of an organic compound was analysed by combustion method. The mass of the U-tube increased by 1.08 g. What is the percentage of hydrogen in the compound?

Detailed Solution for Test: Qualitative & Quantitative Analysis of Organic Compounds (September 19) - Question 10

Increase in mass of U-tube = 1.08 g
Mass of water formed = 1.08 g
18gH20 = 2gH

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