Calgon used in water treatment is chemically ____________________? A. Sodium phosphateB. Sodium hexametaphosphate C. Calcium phosphate D. Tricresyl phosphate

In multistage equilibrium conversion of SO2 to SO3 (2SO2 + O2 ⇌ 2SO3), the reverse reaction becomes appreciable at a temperature of 550° C. The percentage equilibrium conversion of SO2 to SO3 can be increased by ? A. Increasing the…

Coagulant is used _________________ filtration? A. Before B. After C. During D. To avoid

Which of the following is a detergent ? A. Benzene hexachlorideB. Alkyl benzene sulphonate C. Polytetrafluoroethylene D. Cellulose nitrate

Dense soda ash used in the manufacture of glass, is chemically represented by__________________? A. Na2CO3 B. Na2CO3.10H2OC. Na2CO3.H2O D. Na2HCO3

____________ process is used for the commercial production of nitric acid by the catalytic oxidation of ammonia ? A. SolvayB. Ostwald’s C. Haber’s D. None of these

Addition of calcium oxide to water produces___________________? A. Exothermic heat B. Hissing sound C. Slaked limeD. All A , B. & C .

Bromine is used in the preparation of___________________? A. Fire extinguishing compounds B. Fire proofing agents C. Dyes and antiknock compoundsD. All A , B. and C.

Pick out the wrong statement pertaining to the properties of glasses. Glasses generally have___________________? A. High electrical insulation propertiesB. Sharp melting points C. Low co-efficient of thermal expansion D. Compressive strength much greater than their tensile strengths

90% of the caprolactam is converted to nylon-6 on its condensation polymerisation in the reactor maintained at _____________ °C ? A. < 0B. 10-30 C. 250-280 D. 500-600