Terylene is__________________?
Terylene is__________________?
A. Same as Dacron
B. A polyester
C. Both A. & B.
D. Neither A. nor B.
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Liquefaction of gases cannot be done by___________________?
Liquefaction of gases cannot be done by___________________?A. Exchange of heat with colder stream
B. Adiabatic expansion through a throttle valve (Joule-Thomson expansion)
C. Merely compressing it beyond critical pressure
D. Adiabatic expansion against a piston or in a turbine______________ glass has the lowest co-efficient of thermal expansion and hence is more heat resistant ?
______________ glass has the lowest co-efficient of thermal expansion and hence is more heat resistant ?A. Pyrex
B. Soda lime
C. Lead
D. High silicaGypsum is chemically __________________ ?
Gypsum is chemically __________________ ?A. Calcium chloride
B. Potassium sulphate
C. Sodium sulphate
D. Calcium sulphateEssential oils are usually obtained using
Question: Essential oils are usually obtained using
[A].steam distillation [B].
extractive distillation [C].
solvent extraction [D].
leaching Answer: Option D
Explanation:
No answer description available for this question.
Coal tar is used as a
Question: Coal tar is used as a
[A].binding material for coal briquettes. [B].
fuel in rotary kiln. [C].
binder in making carbon electrodes. [D].
all (a), (b) and (c). Answer: Option D
Explanation:
No answer description available for this question.
__________ is the major constituent of the Portland cement.
Question: __________ is the major constituent of the Portland cement.
[A].Calcium carbonate [B].
Calcium oxide [C].
Tricalcium silicate [D].
Calcium sulphate Answer: Option C
Explanation:
No answer description available for this question.