Manufacture of phthalic anhydride uses ______________ as a catalyst ?
Manufacture of phthalic anhydride uses ______________ as a catalyst ?
A. Ni
B. Cr
C. V2O5
D. Al2O3
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Chlorine gas is produced by the electrolysis of brine (NaCl solution with solid NaCl make up) in mercury electrolytic cell. Which of the following is the anodic reaction ?
Chlorine gas is produced by the electrolysis of brine (NaCl solution with solid NaCl make up) in mercury electrolytic cell. Which of the following is the anodic reaction ?A. Oxidation of Na+ ions
B. Oxidation of Cl- ions
C. Reduction of Na+ ions
D. Reduction of Cl- ionsHigh magnesia lime is added to hot sugar cane juice (during the manufacture of sugar) to__________________?
High magnesia lime is added to hot sugar cane juice (during the manufacture of sugar) to__________________?A. Flocculate the impurities
B. Facilitate fast filtration
C. Both A. and B.
D. Neither A. nor B.The most widely used coagulant for removing suspended impurities from water is__________________?
The most widely used coagulant for removing suspended impurities from water is__________________?A. Bleaching powder
B. Chlorine
C. Calcium sulphate
D. AlumSynthesis 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 H2Helium is produced on commercial scale from
Question: Helium is produced on commercial scale from
[A].air [B].
natural gas [C].
coke oven gas [D].
none of these Answer: Option B
Explanation:
No answer description available for this question.
Electric bulbs are made of __________ glass.
Question: Electric bulbs are made of __________ glass.
[A].jena [B].
flint [C].
crookes [D].
pyrex Answer: Option B
Explanation:
No answer description available for this question.