1
IIT-JEE 1980
MCQ (Single Correct Answer)
+1
-0.25
Calcium is obtained by
A
electrolysis of molten CaCl2
B
electrolysis of solution CaCl2 in water
C
Reduction of CaCl2 with carbon
D
roasting of limestone
2
IIT-JEE 1978
MCQ (Single Correct Answer)
+1
-0.25
The substance absorbs CO2 and violently reacts with water. The substance is
A
CaCO3
B
CaO
C
H2SO4
D
ZnO
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