set 1 MCQ Questions & Answers Detailed Explanation

Question : 1

The rusting of iron nail

a) increases its weight

b) does not affect weight but iron is oxidised

c) decreases its weight

d) does not affect weight but iron is reduced

Question : 2

Which of the following properties generally decrease along a period?

a) Non-metallic character

b) Metallic character

c) Atomic size

d) Both (a) and (c)

Question : 3

Match List-I (Oxidation number) with List-II (the element) and select the correct answer using the code given below the lists

a) 4 3 1 2

b) 3 4 2 1

c) 3 4 1 2

d) 4 3 2 1

Question : 4

Which element is more electronegative among halogens?

a) Cl

b) F

c) Br

d) I

Question : 5

A binary liquid solution is prepared by mixing n-heptane and ethanol. Which of the following statements is incorrect regarding the behaviour of the solution?

1. The solution is non-ideal, showing -ve deviation from Raoult’s Law.
2. The solution is non-ideal, showing +ve deviation from Raoult’s Law.
3. n-heptane shows +ve deviation while ethanol shows –ve deviation from Raoult’s Law.
4. The solution formed is an ideal solution.

a) 1, 2 and 4

b) 1, 2 and 3

c) 1, 3 and 4

d) 2, 3 and 4

Question : 6

What is the correct increasing order of electronegativity for the most common oxidation states among the following elements ?

a) C < N < C < F

b) C < N < F < O

c) F < O < N < C

d) C < N < O < F