In a reduction process
A.oxidation number decreases
B.number of electrons decreases
C.oxygen content decreases
D.number of ions decreases
Category: Chemical Technology Mcqs
The gradual cooling of glass products is called
A.tempering
B.annealing
C.quenching
D.galvanising
Sulphuric acid produced by contact process is
A.cheaper
B.pure and concentrated
C.of poor quality
D.very dilute
Clinker is the mass obtained by heating
A.powdered limestone and clay
B.gypsum
C.dolomite
D.sand limestone and washing soda
Washing soda is
A.Na2CO3.10H2O
B.Na2CO3
C.Na2CO3.H2O
D.Na2CO3.2H2O
Mercury electrolytic cell produces
A.10-12% NaOH solution
B.50-70% NaOH solution
C.97-98.5% NaOH solution
D.20-25% NaOH solution
The principal raw material for the production of chlorine gas by mercury electrolytic cell is
A.saturated NaCI solution only
B.saturated NaCI solution with solid NaCI make-up
C.solid NaCI only
D.90-92% NaCI solution
A glass with high refractive index and used in optical instruments is
A.Pyrex glass
B.Jena glass
C.Flint glass
D.Crookes glass
Coke oven gas is composed of
A.CH4 CO2 and H2O
B.CO CH4 and N2
C.CO2 CO AND H2
D.H CO and CH2
The equilibrium yield of sulphur trioxide obtained from the oxidation of sulphur dioxide can be increased by
A.square root of system pressure at a given temperature
B.cube root of system pressure at a given temperature
C.square of system pressure at a given temperature
D.cube of system pressure at a given temperature
