HSEB Model Question Of Chemistry | Grade XI

Time: 3 hrs | Full Marks: 75 | Pass Marks: 27

Group ‘A’

Attempt any 15 questions  : [15 X 2 = 30]

1. State Law of reciprocal proportion.

2. The oxide of an element contains 67.67 % of oxygen and V.D. of its volatile chloride is 79

3. Define surface tension of Liquid.

Question Paper of Chemistry | Grade XI 2071

Candidates are required to give their answer in their own words as far as practicable. The figures in the margin indicates full marks.

Time: 3 hrs | Full Marks: 75 | Pass Marks: 27

Group ‘A’

Attempt any fifteen questions. [15 X 2 = 30]

1. 12gm of carbon react with 4gm of hydrogen to produce 16gm of methane. Which chemical law do these data illustrate. State the law. [1 + 1]
2. How many number of gold atoms are present in 0.6gm of 18 carat gold. The 24 carat gold is taken as 100% pure gold. (atomic mass of gold = 197). [2]