This chapter is currently out of syllabus
1
JEE Main 2021 (Online) 16th March Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Given below are two statements :

Statement I : Both CaCl2 . 6H2O and MgCl2 . 8H2O undergo dehydration on heating.

Statement II : BeO is amphoteric whereas the oxides of other elements in the same group are acidic.

In the light of the above statements, choose the correct answer from the options given below :
A
Both statement I and statement II are false
B
Statement I is false but statement II is true
C
Statement I is true but statement II is false
D
Both statement I and statement II are true
2
JEE Main 2021 (Online) 24th February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Match List - I with List - II.

List I (Salt) List II (Flame colour wavelength)
(a) LiCl (i) 455.5 nm
(b) NaCl (ii) 670.8 nm
(c) RbCl (iii) 780.0 nm
(d) CsCl (iv) 589.2 nm


Choose the correct answer from the options given below :
A
(a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)
B
(a)-(iv), (b)-(ii), (c)-(iii), (d)-(i)
C
(a)-(i), (b)-(iv), (c)-(ii), (d)-(iii)
D
(a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)
3
JEE Main 2020 (Online) 6th September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Match the following compounds (Column-I) with their uses (Column-II) :

S.No. Column-I S.No. Column-II
(I) Ca(OH)2 (A) casts of statues
(II) NaCl (B) white wash
(III) CaSO4, $${1 \over 2}$$H2O (C) antacid
(IV) CaCO3 (D) washing soda
preparation
A
(I)-(B), (II)-(C), (III)-(D), (IV)-(A)
B
(I)-(B), (II)-(D), (III)-(A), (IV)-(C)
C
(I)-(C), (II)-(D), (III)-(B), (IV)-(A)
D
(I)-(D), (II)-(A), (III)-(C), (IV)-(B)
4
JEE Main 2020 (Online) 6th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Among the sulphates of alkaline earth metals, the solubilities of BeSO4 and MgSO4 in water, respectively, are :
A
poor and poor
B
poor and high
C
high and poor
D
high and high
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