JEE Main 2021 (Online) 27th July Evening Shift | Periodic Table & Periodicity Question 61 | Chemistry | JEE Main - ExamSIDE.com

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1

JEE Main 2021 (Online) 27th July Evening Shift

MCQ (Single Correct Answer)

+4

-1

The correct order of first ionisation enthalpy is :

A

Mg < S < Al < P

B

Mg < Al < S < P

C

Al < Mg < S < P

D

Mg < Al < P < S

2

JEE Main 2021 (Online) 27th July Morning Shift

MCQ (Single Correct Answer)

+4

-1

Match List - I with List - II :

	List - I		List - II
(a)	NaOH	(i)	Acidic
(b)	$$Be{(OH)_2}$$	(ii)	Basic
(c)	$$Ca{(OH)_2}$$	(iii)	Amphoteric
(d)	$$B{(OH)_3}$$
(e)	$$Al{(OH)_3}$$

Choose the most appropriate answer from the options given below

A

(a)-(ii), (b)-(ii), (c)-(iii), (d)-(ii), (e)-(iii)

B

(a)-(ii), (b)-(iii), (c)-(ii), (d)-(i), (e)-(iii)

C

(a)-(ii), (b)-(ii), (c)-(iii), (d)-(i), (e)-(iii)

D

(a)-(ii), (b)-(i), (c)-(ii), (d)-(iii), (e)-(iii)

3

JEE Main 2021 (Online) 25th July Evening Shift

MCQ (Single Correct Answer)

+4

-1

The ionic radii of F^$$-$$ and O^2$$-$$ respectively are 1.33$$\mathop A\limits^o $$ and 1.4$$\mathop A\limits^o $$, while the covalent radius of N is 0.74$$\mathop A\limits^o $$.

The correct statement for the ionic radius of N^3$$-$$ from the following is :

A

It is smaller than F^$$-$$ and N

B

It is bigger than O2^$$-$$ and F^$$-$$

C

It is bigger than F^$$-$$ and N, but smaller than of O^2$$-$$

D

It is smaller than O^2$$-$$ and F^$$-$$, but bigger than of N

4

JEE Main 2021 (Online) 25th July Morning Shift

MCQ (Single Correct Answer)

+4

-1

The ionic radii of K⁺, Na⁺, Al³⁺ and Mg²⁺ are in the order:

A

Na⁺ < K⁺ < Mg²⁺ < Al³⁺

B

Al³⁺ < Mg²⁺ < K⁺ < Na⁺

C

Al³⁺ < Mg²⁺ < Na⁺ < K⁺

D

K⁺ < Al³⁺ < Mg²⁺ < Na⁺

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