Match List-I with List-II and select the answer using the codes given below the Lists : List-I(Symbol of Element)List-II(Group of Element)A. Sm1. Transition ElementsB. Cs2. Alkali MetalsC. Os3. Actinoid ElementsD. Np4. Lanthanoid ElementsCodes :

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Question

General Knowledge

Match List-I with List-II and select the answer using the codes given below the Lists :

List-I (Symbol of Element)	List-II (Group of Element)
A. Sm	1. Transition Elements
B. Cs	2. Alkali Metals
C. Os	3. Actinoid Elements
D. Np	4. Lanthanoid Elements

Codes :

This question was previously asked in

CDS 1 2026 Maths Question Paper (12-Apr-2026)

A-4, B-2, C-1, D-3

A-4, B-1, C-2, D-3

A-3, B-1, C-2, D-4

A-3, B-2, C-1, D-4

The correct answer is

A-4, B-2, C-1, D-3

Matching Element Symbols to Groups

The question requires matching element symbols in List-I with their corresponding groups in List-II.

A. Sm (Samarium): Samarium (atomic number 62) is an f-block element belonging to the Lanthanide series.
B. Cs (Caesium): Caesium (atomic number 55) is in Group 1 of the periodic table, classified as an Alkali Metal.
C. Os (Osmium): Osmium (atomic number 76) is a d-block element, part of the Platinum group metals, and is classified as a Transition Element.
D. Np (Neptunium): Neptunium (atomic number 93) is an element in the Actinide series, located after Actinium.

Determining the Correct Code

Based on the analysis above, the correct matches are:

Sm (A) matches with Lanthanoid Elements (4).
Cs (B) matches with Alkali Metals (2).
Os (C) matches with Transition Elements (1).
Np (D) matches with Actinoid Elements (3).

Therefore, the correct code is A-4, B-2, C-1, D-3.

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