set 3 MCQ Questions & Answers Detailed Explanation

Question : 1

Match List-I with List-II:

a) A – (2), B – (3), C – (4), D – (1), E – (5)

b) A – (3), B – (2), C – (1), D – (4), E – (5)

c) A – (2), B – (3), C – (1), D – (4), E – (5)

d) A – (2), B – (3), C – (1), D – (5), E – (4)

Question : 2

All the members in a group in long form of periodic table have the same

a) number of valence electrons

b) chemical properties

c) valence

d) All of these

Question : 3

An element ‘M’ has an atomic number 9 and its atomic mass 19. The ion of M will be represented by

a) M²⁺

b) M^–

c) M

d) M^2–

Question : 4

Consider the following equation for the formation of ammonia from nitrogen and hydrogen:
N₂ + 3H₂ = 2NH₃
How many hydrogen molecules are required to react with 100 molecules of nitrogen?

a) 200

b) 300

c) 100

d) 400

Question : 5

Which type of colloidal system is expressed in the fog?

a) Gas in a liquid

b) Solid in a gas

c) Liquid in a gas

d) Liquid in liquid

Question : 6

Which of the following are correct statements?

1. The canonical structures have no real existence
2. Every $AB_5$ molecule does in fact have square pyramidal structure
3. Multiple bonds are always shorter than corresponding single bonds
4. The electron-deficient molecules can act as Lewis acids

a) 2, 3 and 4

b) 1, 2 and 3

c) 1, 3 and 4

d) 1, 2 and 4