JEE Main 2021 (Online) 16th March Morning Shift | p-Block Elements Question 139 | Chemistry

1

JEE Main 2021 (Online) 16th March Morning Shift

MCQ (Single Correct Answer)

+4

-1

Out of Syllabus

Match List - I with List - II :

	List - I Industrial process		List - II Application
(a)	Haber's process	(i)	$$HN{O_3}$$ synthesis
(b)	Ostwald's process	(ii)	Aluminium extraction
(c)	Contact process	(iii)	$$N{H_3}$$ synthesis
(d)	Hal-Heroult process	(iv)	$${H_2}S{O_4}$$ synthesis

Choose the correct answer from the options given below :

A

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

B

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

C

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

D

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

2

JEE Main 2021 (Online) 16th March Morning Shift

MCQ (Single Correct Answer)

+4

-1

A group of 15 element, which is a metal and forms a hydride with strongest reducing power among group 15 hydrides. The element is :

A

As

B

Sb

C

Bi

D

P

3

JEE Main 2021 (Online) 16th March Morning Shift

MCQ (Single Correct Answer)

+4

-1

Out of Syllabus

Match List - I with List - II :

	List - I Name of oxo acid		List - II Oxidation state of 'P'
(a)	Hypophosphorous acid	(i)	+5
(b)	Orthophosphoric acid	(ii)	+4
(c)	Hypophosphoric acid	(iii)	+3
(d)	Orthophosphorous acid	(iv)	+2
		(v)	+1

Choose the correct answer from the options given below :

A

(a) - (iv), (b) - (v), (c) - (ii), (d) - (iii)

B

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

C

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

D

(a) - (v), (b) - (iv), (c) - (ii), (d) - (iii)

4

JEE Main 2021 (Online) 26th February Evening Shift

MCQ (Single Correct Answer)

+4

-1

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R.

Assertion A : In TlI₃, isomorphous to CsI₃, the metal is present in +1 oxidation state.

Reason R : Tl metal has fourteen f electrons in its electronic configuration.

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

A

A is correct but R is not correct

B

A is not correct but R is correct

C

Both A and R are correct but R is NOT the correct explanation of A

D

Both A and R are correct and R is the correct explanation of A