This chapter is currently out of syllabus
1
JEE Main 2020 (Online) 6th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
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
2
JEE Main 2020 (Online) 4th September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
An alkaline earth metal ‘M’ readily forms water soluble sulphate and water insoluble hydroxide. Its oxide MO is very stable to heat and does not have rock-salt structure. M is :
A
Ca
B
Mg
C
Sr
D
Be
3
JEE Main 2020 (Online) 4th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
On combustion of Li, Na and K in excess of air, the major oxides formed, respectively, are :
A
Li2O, Na2O2 and K2O
B
Li2O2, Na2O2 and K2O2
C
Li2O, Na2O2 and KO2
D
Li2O, Na2O and K2O2
4
JEE Main 2020 (Online) 2nd September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Two elements A and B have similar chemical properties. They don’t form solid hydrogencarbonates, but react with nitrogen to form nitrides. A and B, respectively, are :
A
Li and Mg
B
Cs and Ba
C
Na and Rb
D
Na and Ca
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