Chalcopyrite is an ore of
Question: Chalcopyrite is an ore of
[A].
lead
aluminium
copper
zinc
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
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B. 1000-1500
C. 120-500
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Question: Pellets are not as popular a burden as sinter in the iron blast furnace, because of their
[A].shape. [B].
swelling tendency. [C].
poor reducibility. [D].
low mechanical strength. Answer: Option B
Explanation:
No answer description available for this question.
Atomic _________________ of an element is a whole number ?
Atomic _________________ of an element is a whole number ?A. Weight
B. Number
C. Volume
D. RadiusWhite phosphorous is stored under water, because
Question: White phosphorous is stored under water, because
[A].it does not react with water. [B].
it is poisonous. [C].
its kindling temperature in dry air is very low. [D].
it is unstable. Answer: Option C
Explanation:
No answer description available for this question.
Ammonia gas can be dried by___________________?
Ammonia gas can be dried by___________________?A. PCl5
B. Quick lime
C. CaCl2
D. Concentrated H2SO4Co-efficient of performance of a Carnot cycle refrigerator operating between – 23°C and + 27°C is ________________?
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B. 5
C. 0.5
D. 1.5