1
IIT-JEE 1982
True or False
+1
-0
MgCl2.6H2O on heating give anhydrous MgCl2
A
TRUE
B
FALSE
2
IIT-JEE 1982
Subjective
+1
-0
How will you prepare bleaching powder from slaked lime.
3
IIT-JEE 1982
Subjective
+1
-0
Write down the balanced equations for the reaction when:
An alkaline solution of potassium ferricyanide is reacted with hydrogen peroxide.
4
IIT-JEE 1982
MCQ (Single Correct Answer)
+2
-0.5
If $$z = {\left( {{{\sqrt 3 } \over 2} + {i \over 2}} \right)^5} + {\left( {{{\sqrt 3 } \over 2} - {i \over 2}} \right)^5},$$ then
A
$${\mathop{\rm Re}\nolimits} \left( z \right) = 0$$
B
$${\rm I}m\left( z \right) = 0$$
C
$${\mathop{\rm Re}\nolimits} \left( z \right) > 0,\,{\rm I}m\left( z \right) > 0\,$$
D
$${\mathop{\rm Re}\nolimits} \left( z \right) > 0,\,{\rm I}m\left( z \right) < 0$$
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