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1
JEE Main 2021 (Online) 18th March Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Match List - I with List - II

List - I
 List - II
(a) $$Ca{(OCl)_2}$$ (i) Antacid
(b) $$CaS{O_4}.{1 \over 2}{H_2}O$$ (ii) Cement
(c) $$CaO$$ (iii) Bleach
(d) $$CaC{O_3}$$ (iv) Plaster of paris


Choose the most appropriate answer from the options given below :
A
(a) - (i), (b) - (iv), (c) - (iii), (d) - (ii)
B
(a) - (iii), (b) - (ii), (c) - (iv), (d) - (i)
C
(a) - (iii), (b) - (iv), (c) - (ii), (d) - (i)
D
(a) - (iii), (b) - (ii), (c) - (i), (d) - (iv)
2
JEE Main 2021 (Online) 17th March Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
The set of elements that differ in mutual relationship from those of the other sets is :
A
Li - Na
B
Be - Al
C
B - Si
D
Li - Mg
3
JEE Main 2021 (Online) 17th March Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
One of the by-products formed during the recovery of NH3 from Solvay process is :
A
Ca(OH)2
B
NH4Cl
C
NaHCO3
D
CaCl2
4
JEE Main 2021 (Online) 17th March Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
The correct order of conductivity of ions in water is :
A
K+ > Na+ > Cs+ > Rb+
B
Cs+ > Rb+ > K+ > Na+
C
Na+ > K+ > Rb+ > Cs+
D
Rb+ > Na+ > K+ > Li+
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