Reasoning Questions

Q: -->Dalton's Atomic theory could not explain which of the fol...

Hint: It doesn't discuss anything about volume. Explanation: Dalton's atomic theory struggled to explain Gay-Lussac's law of combining volumes of gases. This law states that when gases react, they do so in simple whole-number ratios of their volumes. While Dalton's theory successfully explained the law of conservation of mass and the law of definite proportions, it lacked the mechanism to account for the volumes of gases involved in reactions. It didn't account for the fact that equal numbers of molecules occupy equal volumes under similar conditions. Hence, option 2 is the correct answer.

01

PYQ 2016

easy

chemistry ID: neet-201

{Be}_{2} C

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02

PYQ 2018

easy

chemistry ID: neet-201

The most acidic oxide among the following is - 1. MgO 2. BeO 3. BaO 4. CaO

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03

PYQ 2019

easy

chemistry ID: neet-201

Be {(OH)}_{2}

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04

PYQ 2020

easy

chemistry ID: neet-202

Identify the correct statement from the following: 1. The correct order of hydration enthalpies of alkaline earth cations is Be 2+ < Mg 2+ < Ca 2+ < Sr 2+ < Ba 2+ 2. Lithium and Magnesium show some similarities in their physical properties as they are diagonally placed in the periodic table. 3. Lithium is softer among all alkali metals. 4. Lithium chloride is deliquescent and crystallizes as a hydrate, LiCl\cdot6H 2 O.

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05

PYQ 2023

medium

chemistry ID: neet-202

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R): Assertion (A): Metallic sodium dissolves in liquid ammonia giving a deep blue solution, which is paramagnetic. Reason (R): The deep blue solution is due to the formation of amide. In the light of the above statements choose the correct answer from the options given below: 1. (A) is False but (R) is True. 2. Both (A) and (R) are True and (R) is the correct explanation of (A) . 3. Both (A) and (R) are True and (R) is not the correct explanation of (A) . 4. (A) is True but (R) is False.

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06

PYQ 2025

easy

chemistry ID: neet-202

Dalton's Atomic theory could not explain which of the following? 1. Law of multiple proportion 2. Law of gaseous volume 3. Law of conservation of mass 4. Law of constant proportion

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High-Yield Trend

Questions
6 MCQs

Official Solution

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1.	The correct order of hydration enthalpies of alkaline earth cations is Be²⁺ < Mg²⁺ < Ca²⁺ < Sr²⁺ < Ba²⁺
2.	Lithium and Magnesium show some similarities in their physical properties as they are diagonally placed in the periodic table.
3.	Lithium is softer among all alkali metals.
4.	Lithium chloride is deliquescent and crystallizes as a hydrate, LiCl·6H₂O.

Assertion (A):	Metallic sodium dissolves in liquid ammonia giving a deep blue solution, which is paramagnetic.
Reason (R):	The deep blue solution is due to the formation of amide.

1.	(A) is False but (R) is True.
2.	Both (A) and (R) are True and (R) is the correct explanation of (A).
3.	Both (A) and (R) are True and (R) is not the correct explanation of (A).
4.	(A) is True but (R) is False.

Reasoning Questions

High-Yield Trend

Questions 6 MCQs

Official Solution

Official Solution

Official Solution

Official Solution

Official Solution

Official Solution

Questions
6 MCQs