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Test: Quantitative Analysis (NCERT) - NEET

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10 Questions MCQ Test - Test: Quantitative Analysis (NCERT)

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Test: Quantitative Analysis (NCERT) - Question 1

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: Quantitative Analysis (NCERT) - Question 1

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

Test: Quantitative Analysis (NCERT) - Question 2

An organic compound gave 0.4655 g of CO2 on complete combustion. If the mass of the compound taken was 0.2115 g, what is the percentage of C in it?

Detailed Solution for Test: Quantitative Analysis (NCERT) - Question 2

Mass of CO2 formed = 0.4655 g
Mass of organic compound taken = 0.2115 g

Test: Quantitative Analysis (NCERT) - Question 3

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: Quantitative Analysis (NCERT) - Question 3

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

Percentage of nitrogen in organic compound

Test: Quantitative Analysis (NCERT) - Question 4

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: Quantitative Analysis (NCERT) - Question 4

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

Test: Quantitative Analysis (NCERT) - Question 5

In Carius method of estimation of halogen, 0.15 g of an organic compound gave 0.12 g of AgBr. What is the percentage of bromine in the compound?

Detailed Solution for Test: Quantitative Analysis (NCERT) - Question 5

Molar mass of AgBr = 108 + 80 = 188 g mol-1
Percentage of Br

Test: Quantitative Analysis (NCERT) - Question 6

2.18 g of an organic compound containing sulphur produces 1.02g of BaSO4. Thepercentage of sulphur in the compound is

Detailed Solution for Test: Quantitative Analysis (NCERT) - Question 6

Test: Quantitative Analysis (NCERT) - Question 7

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

Detailed Solution for Test: Quantitative Analysis (NCERT) - Question 7

Test: Quantitative Analysis (NCERT) - Question 8

Match the column I with column II in which formula for estimation of an element is given and mark the appropriate choice.

Detailed Solution for Test: Quantitative Analysis (NCERT) - Question 8

(w1 = weight of CO2, w= weight of organic compound)

(V = volume of N2 at STP, w = weight of organic compound)

Test: Quantitative Analysis (NCERT) - Question 9

The percentage of oxygen in heavy water is

Detailed Solution for Test: Quantitative Analysis (NCERT) - Question 9

In D2O percentage of deuterium

% of oxygen - 100 - 20 = 80%

Test: Quantitative Analysis (NCERT) - Question 10

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: Quantitative Analysis (NCERT) - Question 10

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

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