JEE Main 2021 — S Block Elements Question with Solution
From: JEE Main 2021 (Online) 25th July Morning Shift
Question
Given below are two statements :
Statement I : None of the alkaline earth metal hydroxides dissolve in alkali.
Statement II : Solubility of alkaline earth metal hydroxides in water increases down the group.
In the light of the above statements, choose the most appropriate answer from the options given below :
Statement I : None of the alkaline earth metal hydroxides dissolve in alkali.
Statement II : Solubility of alkaline earth metal hydroxides in water increases down the group.
In the light of the above statements, choose the most appropriate answer from the options given below :
Choose an option
Show full solutionCorrect option: B
Correct answer
BStatement I is incorrect but Statement II is correct.
Step-by-step explanation
Statement - I is incorrect
Be(OH)2 dissolve in alkali due to it's amphoteric nature.
Statement - II is correct
Solubility of alkaline earth metal hydroxide in water increases down the group due to rapid decreases in lattice energy as compared to hydration energy.
Be(OH)2 dissolve in alkali due to it's amphoteric nature.
Statement - II is correct
Solubility of alkaline earth metal hydroxide in water increases down the group due to rapid decreases in lattice energy as compared to hydration energy.
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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.