JEE Main 2021Chemistrys Block ElementsMediumMCQ

JEE Main 2021s Block Elements Question with Solution

JEE Main 2021 (16 Mar Shift 1)

Question

Given below are two statements:

Statement I : Both CaCl2.6H2O and MgCl2.8H2O undergo dehydration on heating.

Statement II : BeO is amphoteric, whereas the oxides of other elements in the same group are acidic.

In the light of the above statements, choose the correct answer from the options given below:

Choose an option

Show full solutionCorrect option: B
Correct answer
BBoth statement I and statement II are false

Step-by-step explanation

(a) CaCl2.6H2OΔCaCl2(Anhydrous)+6H2O

(b) MgCl2.8H2OΔMgO+2HCl+6H2O

The dehydration of hydrated chloride of calcium can be achieved. The corresponding hydrated chloride of magnesium on heating suffer hydrolysis.

(c) BeO Amphoteric

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About this question

This is a previous-year question from JEE Main 2021, covering the s Block Elements chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.