JEE Main 2022 (Online) 27th June Evening Shift | p-Block Elements Question 98 | Chemistry

1

JEE Main 2022 (Online) 27th June 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 : Fluorine forms one oxoacid.

Reason R : Fluorine has smallest size amongst all halogens and is highly electronegative.

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

A

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

B

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

C

A is correct but R is not correct.

D

A is not correct but R is correct.

2

JEE Main 2022 (Online) 27th June Evening Shift

MCQ (Single Correct Answer)

+4

-1

Match List I with List II.

	List-I (Anion)		List-II (gas evolved on reaction with dil.H$$_2$$SO$$_2$$)
(A)	CO$${_3^{2 - }}$$	I.	Colourless gas which turns lead acetate paper black.
(B)	S$$^{2 - }$$	II.	Colourless gas which turns acidified potassium dichromate solution green.
(C)	SO$${_3^{2 - }}$$	III.	Brown fumes which turns acidified KI solution containing starch blue.
(D)	NO$${_2^ - }$$	IV.	Colourless gas evolved with brisk effervescence, which turns lime water milky.

Choose the correct answer from the options given below :

A

A-III, B-I, C-II, D-IV

B

A-II, B-I, C-IV, D-III

C

A-IV, B-I, C-III, D-II

D

A-IV, B-I, C-II, D-III

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JEE Main 2022 (Online) 27th June Morning Shift

MCQ (Single Correct Answer)

+4

-1

Out of Syllabus

Match List - I with List - II.

	List - I (Si-Compounds)		List - II (Si-Polymeric/Other Products
(A)	$${(C{H_3})_4}Si$$	(I)	Chain Silicone
(B)	$$(C{H_3})Si{(OH)_3}$$	(II)	Dimeric Silicone
(C)	$${(C{H_3})_2}Si{(OH)_2}$$	(III)	Silane
(D)	$${(C{H_3})_3}Si(OH)$$	(IV)	2D - Silicone

Choose the correct answer from the options given below :

A

(A) - (III), (B) - (II), (C) - (I), (D) - (IV)

B

(A) - (IV), (B) - (I), (C) - (II), (D) - (III)

C

(A) - (II), (B) - (I), (C) - (IV), (D) - (III)

D

(A) - (III), (B) - (IV), (C) - (I), (D) - (II)

4

JEE Main 2022 (Online) 27th June Morning Shift

MCQ (Single Correct Answer)

+4

-1

Out of Syllabus

Heating white phosphorus with conc. NaOH solution gives mainly :

A

Na₃P and H₂O

B

H₃PO and NaH

C

P(OH)₃ and NaH₂PO₄

D

PH₃ and NaH₂PO₂