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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 2025 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 2025 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?

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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?

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Mercury is a transition metal that exhibits an unusually low melting point compared to other transition metals. This is due to its unique electron configuration and the relativistic effects that weaken its metallic bonding, resulting in a melting point of -38.83°C.

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Transition metals with highest melting point is

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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
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- 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.

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Which is the most stable oxidation state of iron?
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Fe has d5 configuration in +3 oxidation state.

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Electronic configuration of Cu3+ is
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Cu has atomic number 29.

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Maximum magnetic moment is shown by
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Magnetic moment is maximum for the element having maximum unpaired electrons.

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Maximum oxidation state is shown by
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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.

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Which of the following ion has smallest radii?
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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?
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Cu2+, Ti3+ will have same unpaired electrons and hence same paramagnetic moment.

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Test: d & f-Block Elements - Question 12
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Which of the following metals have only one oxidation state?
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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
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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
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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?
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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?
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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?
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[Fe(H2O)5NO]2+is brown color complex.

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

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Vitamin B12 contains?
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Vitamin B12 contains Co3+.

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Which is least soluble in water?
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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
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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
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4Zn + 10HNO3 → 4Zn(NO3)2 + N2O + 5H2O

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Ferrous sulphate on heating gives
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FeSO4 on heating gives SO2 and SO3

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In the reaction, SnCl2 + HgCl2 → A + SnCl4
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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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