Electric bulbs are made of _______________ glass ?
Electric bulbs are made of _______________ glass ?
A. Jena
B. Flint
C. Crookes
D. Pyrex
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Nickel is not used as a catalyst in the
Question: Nickel is not used as a catalyst in the
[A].Fischer-Tropsch process. [B].
shift conversion. [C].
hydrogenation of oil. [D].
Ostwald’s process of HNO3 manufacture. Answer: Option D
Explanation:
No answer description available for this question.
Which of the following coals has the highest calorific value ?
Which of the following coals has the highest calorific value ?A. Lignite
B. Sub-bituminous
C. Anthracite
D. PeatSynthesis gas is a mixture of__________________?
Synthesis gas is a mixture of__________________?A. CO and H2
B. N2 and H2
C. H2, CH4 and CO
D. CO2 and H2Ore concentration by froth floatation utilises the __________ of ore particles.
Question: Ore concentration by froth floatation utilises the __________ of ore particles.
[A].density difference [B].
wetting characteristics [C].
terminal velocities [D].
none of these Answer: Option B
Explanation:
No answer description available for this question.
Oxidation of ortho-xylene in presence of __________ catalyst is done to produce phthalic anhydride on commercial scale.
Question: Oxidation of ortho-xylene in presence of __________ catalyst is done to produce phthalic anhydride on commercial scale.
[A].nickel [B].
vanadium [C].
alumina [D].
iron Answer: Option B
Explanation:
No answer description available for this question.
Permanent hardness of water can be removed by___________________?
Permanent hardness of water can be removed by___________________?A. Boiling
B. Adding Ca(OH)2
C. Boiling it with Na2CO3
D. None of these