Question

FIRST TERM EXAM 2021 Sub:Chemistry Time:2 H Class: 11 Q1.Select and rewrite the most appropriate answer from the following. (14) i) Alkane is called as------ a) Paraffins b) Olefins coil d)None ii) Numbers of groups in periodic table is a) 18 (b) 7 c) 17 d) 6 iii) Oxidatoon number of C in co, is a) +4 (b) -4 c) +2 d)-2 iv) in oxidation loss of a) electron (b)proton c) neutron d) none v) S block elements contain ------- numbers of groups. a) 2 (b) 6 c) 10 d) 14 vi) Oxidizing agent itself undergoes (a)Reduction (b) Oxidation c) redox reaction d) hydrogenation vii) oxidation number of Cl in HCl is a)-1 (b) +1 c) +2 d)-2​

Answer 1

Answer:

i) Alkane is called as parffins.

ii) Numbers of groups in periodic table is 18.

iii) Oxidatoon number of C in co, is +2.

iv) in oxidation loss of electron.

v) S block elements contain 2 numbers of groups.

vi) Oxidizing agent itself undergoes reduction.

vii) Oxidation number of CI in HCI is -1.