A. Plaster of Paris
B. Salt cake
C. Nitre cake
D. Lime
Related Mcqs:
- Catalytic oxidation-dehydrogenation of methyl alcohol produces__________________?
A. Formaldehyde
B. Phenol
C. Acetone
D. Maleic anhydride - Calcination of limestone is not done in a ______________ kiln for producing lime ?
A. Vertical shaft
B. Rotary
C. Fluidised bed
D. Fixed bed - How much temperature is maintained during quicklime manufacture in the calcination zone of the vertical shaft kiln ?
A. 500°C
B. 750°C
C. 1000°C
D. 1500°C - The function of gypsum addition during cement making is to_________________?
A. Increase the density of cement
B. Decrease the cement setting rate
C. Both A. and B.
D. Neither A. nor B. - Gypsum is chemically __________________ ?
A. Calcium chloride
B. Potassium sulphate
C. Sodium sulphate
D. Calcium sulphate - Extraction of _________________ employs an electrolytic process ?
A. Aluminium
B. Silver
C. Copper
D. All A, B. and C - Penicillin, an antibiotic drug was discovered by__________________?
A. Alexander
B. Flaming
C. Doctor Zhivago
D. None of these - Commercially ethylene is produced from naphtha by ______________________?
A. Catalytic cracking
B. Catalytic dehydrogenation
C. Pyrolysis
D. Hydrocracking - Pick out the wrong statement ?
A. Low intensity explosives are also called propellants, whereas high intensity explosive are
called detonators
B. Gun powder comprises of 75% salt petre, 15% charcoal and 10% sulphur
C. Lead azide is a popular military explosive
D. TNT is a hygroscopic explosive having very high melting point and is non-toxic to human
being - Sand and ______________ is fused at 1300°C, to produce sodium silicate ?
A. Limestone
B. Soda ash
C. Coke
D. Sodium sulphate
