Calcination of gypsum produces__________________?
Calcination of gypsum produces__________________?
A. Plaster of Paris
B. Salt cake
C. Nitre cake
D. Lime
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Bakelite is chemically known as_____________________?
Bakelite is chemically known as_____________________?A. Polyvinyl chloride (PVC)
B. Polybutadiene
C. Phenol formaldehyde
D. PolyurethaneMercury electrolytic cell produces 50-70% NaOH solution. Its operating temperature is ______________ °C?
Mercury electrolytic cell produces 50-70% NaOH solution. Its operating temperature is ______________ °C?A. 25
B. 60-70
C. 150-200
D. 250-300Fish contains about __________ percent oil.
Question: Fish contains about __________ percent oil.
[A].5 [B].
10 [C].
20 [D].
35 Answer: Option C
Explanation:
No answer description available for this question.
Chalcopyrite is the main ore of
Question: Chalcopyrite is the main ore of
[A].copper [B].
lead [C].
tin [D].
iron Answer: Option A
Explanation:
No answer description available for this question.
________________ is the major constituent of the Portland cement?
________________ is the major constituent of the Portland cement?A. Calcium carbonate
B. Calcium oxide
C. Tricalcium silicate
D. Calcium sulphateHydrogenation of edible vegetable oils_________________?
Hydrogenation of edible vegetable oils_________________?A. Is an exothermic reaction
B. Increases their melting point
C. Is done in presence of nickel catalyst
D. All A , B. and C.