JEE Main 2022 (Online) 28th June Morning Shift | p-Block Elements Question 90 | Chemistry

1

JEE Main 2022 (Online) 28th June Morning Shift

MCQ (Single Correct Answer)

+4

-1

Out of Syllabus

Given below are two statements :

Statement I : The pentavalent oxide of group-15 element, E₂O₅, is less acidic than trivalent oxide, E₂O₃, of the same element.

Statement II : The acidic character of trivalent oxide of group 15 elements, E₂O₃, decreases down the group.

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

A

Both Statement I and Statement II are true.

B

Both Statement I and Statement II are false.

C

Statement I is true, but Statement II is false.

D

Statement I is false, but Statement II is true.

2

JEE Main 2022 (Online) 27th June Evening Shift

MCQ (Single Correct Answer)

+4

-1

Out of Syllabus

The gas produced by treating an aqueous solution of ammonium chloride with sodium nitrite is :

A

NH₃

B

N₂

C

N₂O

D

Cl₂

3

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.

4

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