Basic Concepts in Chemistry-Atomic and Molecular Masses (KVPY Stream-SA (Class 11) Chemistry): Questions 1 - 3 of 3

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Question number: 1

» Basic Concepts in Chemistry » Atomic and Molecular Masses

Appeared in Year: 2015

MCQ▾

Question

Mendeleev’s periodic law states that the properties of elements are a periodic function of their

Choices

Choice (4) Response

a.

Electronic configuration

b.

Reactivity of elements

c.

Atomic mass

d.

Atomic size

Question number: 2

» Basic Concepts in Chemistry » Atomic and Molecular Masses

Appeared in Year: 2012

MCQ▾

Question

The weight of calcium oxide formed by burning 20 g of calcium in excess oxygen is:

Choices

Choice (4) Response

a.

56 g

b.

28 g

c.

72 g

d.

36 g

Question number: 3

» Basic Concepts in Chemistry » Atomic and Molecular Masses

Appeared in Year: 2015

MCQ▾

Question

The percentage of nitrogen by mass in ammonium sulphate is closest to (atomic masses H = 1, N = 14, 0 = 16, S = 32)

Choices

Choice (4) Response

a.

36%

b.

16%

c.

21%

d.

24%

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