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

Test: d & f-Block Elements - NEET MCQ


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25 Questions MCQ Test Chemistry Class 12 - Test: d & f-Block Elements

Test: d & f-Block Elements for NEET 2024 is part of Chemistry Class 12 preparation. The Test: d & f-Block Elements questions and answers have been prepared according to the NEET exam syllabus.The Test: d & f-Block Elements MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: d & f-Block Elements below.
Solutions of Test: d & f-Block Elements questions in English are available as part of our Chemistry Class 12 for NEET & Test: d & f-Block Elements solutions in Hindi for Chemistry Class 12 course. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free. Attempt Test: d & f-Block Elements | 25 questions in 35 minutes | Mock test for NEET preparation | Free important questions MCQ to study Chemistry Class 12 for NEET Exam | Download free PDF with solutions
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 for Test: d & f-Block Elements - 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.

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Which among the following transition metal has lowest melting point?

Detailed Solution for Test: d & f-Block Elements - Question 2

Zn has lowest melting point because it doesnot have any unpaired electrons.

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

Detailed Solution for Test: d & f-Block Elements - Question 3

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

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Transition metals with lowest melting point is
Detailed Solution for Test: d & f-Block Elements - Question 4

- Mercury (Hg) is the transition metal with the lowest melting point.
- It is the only metal that is liquid at room temperature, with a melting point of -38.83°C.
- The low melting point is due to weak metallic bonding in mercury's lattice structure.
- Mercury's electrons are more tightly bound to the nucleus, reducing the overlap of electron clouds that contribute to metallic bonding.
- This results in weaker forces holding the atoms together, leading to a low melting point.

Test: d & f-Block Elements - Question 5
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Which is the most stable oxidation state of iron?
Detailed Solution for Test: d & f-Block Elements - Question 5

Fe has d5 configuration in +3 oxidation state.

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Electronic configuration of Cu3+ is
Detailed Solution for Test: d & f-Block Elements - Question 6

Cu has atomic number 29.

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Maximum magnetic moment is shown by
Detailed Solution for Test: d & f-Block Elements - Question 7

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

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Maximum oxidation state is shown by
Detailed Solution for Test: d & f-Block Elements - Question 8

Os shows maximum oxidation state of +8.

Test: d & f-Block Elements - Question 9
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Which one of the following compound is deliquescent?
Detailed Solution for Test: d & f-Block Elements - Question 9

ZnCl2 is deliquescent.

Test: d & f-Block Elements - Question 10
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Which of the following ion has smallest radii?
Detailed Solution for Test: d & f-Block Elements - Question 10

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.

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Which of the following pairs of ions have same paramagnetic moment?
Detailed Solution for Test: d & f-Block Elements - Question 11

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

*Multiple options can be correct
Test: d & f-Block Elements - Question 12
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Which of the following metals have only one oxidation state?
Detailed Solution for Test: d & f-Block Elements - Question 12

Sc,Al has only one oxidation state i.e. +3.

Co,Fe has various oxidation states; most common are +2 and +3.

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Mohr’s salt is a
Detailed Solution for Test: d & f-Block Elements - Question 13

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

FeSO4 . (NH4)2 SO4.6H2O

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Red hot steel rods on suddenly immersing in water become
Detailed Solution for Test: d & f-Block Elements - Question 14

Red hot steel rods on suddenly immersing in water become hard and brittle.

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Which of the following methods is based on distribution law?
Detailed Solution for Test: d & f-Block Elements - Question 15

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

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Which is called chromic acid?
Detailed Solution for Test: d & f-Block Elements - Question 16

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

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Which one of the following combines with Fe2+ ion to form a brown complex?
Detailed Solution for Test: d & f-Block Elements - Question 17

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

Test: d & f-Block Elements - Question 18
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Lucas reagent is
Detailed Solution for Test: d & f-Block Elements - Question 18

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

Test: d & f-Block Elements - Question 19
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Vitamin B12 contains?
Detailed Solution for Test: d & f-Block Elements - Question 19

Vitamin B12 contains Co3+.

Test: d & f-Block Elements - Question 20
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Which is least soluble in water?
Detailed Solution for Test: d & f-Block Elements - Question 20

Ag2S is least soluble in water.

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A reduction in the atomic size with increase in atomic number is characteristic of the elements of
Detailed Solution for Test: d & f-Block Elements - Question 21

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

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Nitrous oxide is evolved when Zn is treated with
Detailed Solution for Test: d & f-Block Elements - Question 22

4Zn + 10HNO3 → 4Zn(NO3)2 + N2O + 5H2O

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Ferrous sulphate on heating gives
Detailed Solution for Test: d & f-Block Elements - Question 23

FeSO4 on heating gives SO2 and SO3

Test: d & f-Block Elements - Question 24
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In the reaction, SnCl2 + HgCl2 → A + SnCl4
Detailed Solution for Test: d & f-Block Elements - Question 24

SnCl2 + HgCl2 → Hg + SnCl4

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Ag+ ion is isoelectronic with
Detailed Solution for Test: d & f-Block Elements - Question 25

Ag+ is isoelectronic with Cd2+

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