A. 2
B. 10
C. 25
D. 50
Related Mcqs:
- Separation of fresh water from sea water can be done by the _______________ operation ?
A. Osmosis
B. Reverse osmosis
C. Absorption
D. Adsorption - Bromine content in sea water may be around _________________ ppm?
A. 70
B. 640
C. 1875
D. 2500 - Poly Vinyl Chloride (P.V.C.) is a ______________ material ?
A. Thermosetting
B. Thermoplastic
C. Fibrous
D. Chemically active - Vinyl chloride (CH2 = CH.Cl) is produced by the thermal pyrolysis of ethylene dichloride at a pressure & temperature of __________________?
A. 4 kgf/cm2 & 500°C
B. 10 kgf/cm2 & 1000°C
C. 40 kg/cm2 & 200°C
D. 100 kgf/cm2 & 500°C - Polyvinyl chloride (PVC) is____________________?
A. A thermosetting material
B. A condensation polymerisation product
C. Made by employing emulsion polymerisation
D. None of these - Sugar content in sugarcane on cane basis is about _______________ percent by weight ?
A. 1 to 5
B. 5 to 10
C. 15 to 20
D. 20 to 30 - Sand and ______________ is fused at 1300°C, to produce sodium silicate ?
A. Limestone
B. Soda ash
C. Coke
D. Sodium sulphate - Nitro-glycerine absorbed in wood flour, sodium nitrate or ammonium nitrate is commercially used as controlled explosive called dynamite. The raw material used for its manufacture are glycerine, nitric acid and___________________?
A. Sulphuric acid
B. Phosphoric acid
C. Hydrochloric acid
D. Hydrofluoric acid - Sodium salt of higher molecular weight fatty acid is termed as the ______________________ soap?
A. Hard
B. Soft
C. Metallic
D. Lubricating - Presence of sodium tripolyphosphate (an additive) in synthetic detergent___________________?
A. Facilitates its use even in hard water (by sequestering the water-hardening Ca & Mg ions)
B. Inhibits its corrosive effects
C. Does not allow redeposition of dirt on the cleaned surface
D. None of these
