Question No:1

The general electronic configuration of d-block elements is

[A] ns^1-2 (n-d^1-10

[B] ns²(n-1)d¹ (n-f^1-14–

[C] ns^1-2 (n-1)d^1-9

[D] ns^1-2 np⁶ (n-1)d^1-10

Question No:2

Identify the correctly matched set among the following

[A] Scandium-d-block-representative element

[B] Lanthanum – d-block-inner transition element

[C] Cerium – f – block – transition element

[D] Actinium – d – block – transition element

Question No:3

The representative elements get the nearest inert gas configuration

[A] By losing electrons

[B] By gaining electrons

[C] By sharing electrons

[D] By losing or gaining or sharing electrons

Question No:4

In transition elements, the shells that are incompletely filled

[A] Ultimate shell only.

[B] Penultimate shell only

[C] Both ultimate & penultimate shells

[D] Outermost three shells

Question No:5

The characteristic properties of transition elements are due to

[A] Unpaired electrons in d-subshell

[B] d-orbitals have five fold degeneracy

[C] Presence of 2 nodal planes for d-orbital

[D] Because they belong to d-block

Question No:6

Rare earths are generally

[A] Actinides

[B] f-block elements

[C] Inner transition elements

[D] Lanthanides

Question No:7

Lanthanum belongs to

[A] s-block

[B] p-block

[C] d-block

[D] f-block

Question No:8

In the periodic table transition elements begin with

[A] Scandium

[B] Zinc

[C] Copper

[D] Mercury

Question No:9

Inert gas element which has a different valence shell configuration

[A] Xe

[B] Ne

[C] Kr

[D] He

Question No:10

Atomic numbers of actinides are

[A] 57 to 71

[B] 80 to 103

[C] 58 to 71

[D] 90 to 103

Question No:11

Most of the non-metals are present in the long form of the periodic table in

[A] p-block

[B] f-block

[C] d-block

[D] s-block

Question No:12

Metal used as catalyst in the hydrogenation of vegetable oils

[A] Iron

[B] Molybdenum

[C] Nickel

[D] Sodium

Question No:13

The 4f-subshell is successively filled for

[A] Rare earths

[B] Rare gases

[C] Transition metals

[D] Alkaline earth metals

Question No:14

The role of ‘Molybdenum’ in Haber’s synthesis is

[A] A positive catalyst

[B] A negative catalyst

[C] Poison for catalyst

[D] Promoter for catalyst

Question No:15

The period in which s-block, p-block and d-block elements are present

[A] 1

[B] 6

[C] 7

[D] 3

Question No:16

Elements of p-block are

[A] Only non-metals .

[B] Only metalloids

[C] Metalloids and non-metals

[D] Metalloids, non-metals and metals

Question No:17

The following ion is colourless in aqueous solution

[A] Ca²⁺

[B] Sc³⁺

[C] Zn²⁺

[D] all the above

Question No:18

Which of the following configuration corresponds to an inert gas?

[A] 1s² 2s² 2p⁵

[B] 1s² 2s² 2p⁶

[C] 1s²2s¹

[D] 1s² 2s² 2p⁶ 3s¹

Question No:19

The rare gas that is most abundant in the atmosphere is

[A] He

[B] Ne

[C] Ar

[D] Kr

Question No:20

In lanthanides, the differentiating electron enters into

[A] d – subshell

[B] f – subshell

[C] p – subshell

[D] s – subshell