classification of elements, chemical bonding, periodicity in properties & physical transformation - Category wise Question and Answer Practice Test with Solutions

Question : 11

Which element is more electronegative among halogens?

a) Cl

b) F

c) Br

d) I

Question : 12

Which of the following elements A, B, C, D and E with atomic number 3, 11, 15, 18 and 19 respectively belong to the same group?

a) B, C, D

b) A, D, E

c) A, B, C

d) A, B, E

Question : 13 [CDS]

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 : 14

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 : 15 [PSC (Pre) 2016]

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