JEE Main 2022 (Online) 26th June Evening Shift | d and f Block Elements Question 30 | Chemistry

JEE Main 2022 (Online) 26th June Evening Shift

MCQ (Single Correct Answer)

-1

The most common oxidation state of Lanthanoid elements is +3. Which of the following is likely to deviate easily from +3 oxidation state?

Ce (At. No. 58)

La (At. No. 57)

Lu (At. No. 71)

Gd (At. No. 64)

JEE Main 2022 (Online) 25th June Evening Shift

MCQ (Single Correct Answer)

-1

The metal ion (in gaseous state) with lowest spin-only magnetic moment value is

V²⁺

Ni²⁺

Cr²⁺

Fe²⁺

JEE Main 2022 (Online) 25th June Evening Shift

MCQ (Single Correct Answer)

-1

During halogen test, sodium fusion extract is boiled with concentrated HNO₃ to

remove unreacted sodium

decompose cyanide or sulphide of sodium

extract halogen from organic compound

maintain the pH of extract.

JEE Main 2022 (Online) 25th June Morning Shift

MCQ (Single Correct Answer)

-1

Cerium (IV) has a noble gas configuration. Which of the following is correct statement about it?

It will not prefer to undergo redox reactions.

It will prefer to gain electron and act as an oxidizing agent.

It will prefer to give away an electron and behave as reducing agent.

It acts as both, oxidizing and reducing agent.

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