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NEET Exam  >  NEET Test  >  Chemistry Class 12  >  Test: d & f-Block Elements - NEET MCQ

d & f-Block Elements - Free MCQ Practice Test with solutions, NEET Chemistry


MCQ Practice Test & Solutions: Test: d & f-Block Elements (20 Questions)

You can prepare effectively for NEET Chemistry Class 12 with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: d & f-Block Elements". These 20 questions have been designed by the experts with the latest curriculum of NEET 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 20 minutes
  • - Number of Questions: 20

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Test: d & f-Block Elements - Question 1
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Which among the following is not considered as a part of transition elements?

Detailed Solution: Question 1

A transition metal is one that forms one or more stable ions which have incompletely filled d orbitals. On the basis of this definition, scandium and zinc do not count as transition metals - even though they are members of the d block.

Test: d & f-Block Elements - Question 2
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Which among the following d-block elements has the lowest melting point?

Detailed Solution: Question 2

Correct option: C

Hg (Mercury) is a d-block element (group 12) and has a melting point -38.83°C, which is the lowest among the given options.

The unusually low melting point of mercury is due to weak metallic bonding. The valence 6s electrons in mercury are held relatively tightly with poor overlap between neighbouring atoms; relativistic contraction of the 6s orbital further reduces the extent of metallic bonding, so mercury is liquid at room temperature.

In contrast, Titanium (mp 1668°C), Cobalt (mp 1495°C) and Scandium (mp 1541°C) are d-block/transition metals with stronger metallic bonding and much higher melting points.

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Test: d & f-Block Elements - Question 3
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Transition metals with highest melting point is

Detailed Solution: Question 3

W belongs to 5d series and also it have lot of unpaired electrons thus it forms strong metallic bonding.

Test: d & f-Block Elements - Question 4
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Which is the most stable oxidation state of iron?

Detailed Solution: Question 4

Fe has d5 configuration in +3 oxidation state.

Test: d & f-Block Elements - Question 5
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Electronic configuration of Cu3+ is

Detailed Solution: Question 5

Cu has atomic number 29.

Test: d & f-Block Elements - Question 6
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Maximum magnetic moment is shown by

Detailed Solution: Question 6

Magnetic moment is maximum for the element having maximum unpaired electrons.

Test: d & f-Block Elements - Question 7
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Maximum oxidation state is shown by

Detailed Solution: Question 7

Os shows maximum oxidation state of +8.

Test: d & f-Block Elements - Question 8
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Which of the following ion has smallest radii?

Detailed Solution: Question 8

In period when we move from left to right in a period atomic radii 1st decreases till nickel then starts increasing so Ni2+ has smallest radii.

Test: d & f-Block Elements - Question 9
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Which of the following pairs of ions have same paramagnetic moment?

Detailed Solution: Question 9

Cu2+, Ti3+ will have same unpaired electrons and hence same paramagnetic moment.

Test: d & f-Block Elements - Question 10
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Mohr’s salt is a

Detailed Solution: Question 10

Mohr salt is an example of double salt. Mohr Salt is 

FeSO4 . (NH4)2 SO4.6H2O

Test: d & f-Block Elements - Question 11
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Which of the following methods is based on distribution law?

Detailed Solution: Question 11

Parkes process is a process for removing silver from Pb. It is an example of Liquid liquid extractions

Test: d & f-Block Elements - Question 12
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Which is called chromic acid?

Detailed Solution: Question 12

Chromic Acid is a naturally occurring oxide with a formula H2CrO4.

Test: d & f-Block Elements - Question 13
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Which one of the following combines with Fe2+ ion to form a brown complex?

Detailed Solution: Question 13

[Fe(H2O)5NO]2+is brown color complex.

Test: d & f-Block Elements - Question 14
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Lucas reagent is

Detailed Solution: Question 14

Lucas Test is done to distinguish primary secondary and tertiary alcohols. Lucas reagent is ZnCl2 + HCl

Test: d & f-Block Elements - Question 15
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Vitamin B12 contains?

Detailed Solution: Question 15

Vitamin B12 contains Co3+.

Test: d & f-Block Elements - Question 16
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Which is least soluble in water?

Detailed Solution: Question 16

Ag2S is least soluble in water.

Test: d & f-Block Elements - Question 17
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A reduction in the atomic size with increase in atomic number is characteristic of the elements of

Detailed Solution: Question 17

In f block elements with increase in atomic number atomic radii decreases smoothly.

Test: d & f-Block Elements - Question 18
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Ferrous sulphate on heating gives

Detailed Solution: Question 18

FeSO4 on heating gives SO2 and SO3

Test: d & f-Block Elements - Question 19
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In the reaction, SnCl2 + HgCl2 → A + SnCl4

Detailed Solution: Question 19

SnCl2 + HgCl2 → Hg + SnCl4

Test: d & f-Block Elements - Question 20
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Ag+ ion is isoelectronic with

Detailed Solution: Question 20

Ag+ is isoelectronic with Cd2+

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About this NEET Practice Test

This test contains 20 MCQs on d & f-Block Elements with detailed solutions for each question. It is part of the Chemistry Class 12 course on EduRev, designed to align with the current NEET syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

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