Related Questions

A tank contains 10,000 gallons of a solution that is 5 percent sodium chloride by volume. If 2500 gallons of water evaporate from the tank, the remaining solution will be approximately what percent sodium chloride?
A 1.25%
B 3.75%
C 6.25%
D 6.67%
For the hydrogenation of oils (i) __________ is commonly used as catalyst and (ii) __________ is a catalyst poison.
A (i) platinum (ii) sulphur
B (i) palladium (ii) oxygen
C (i) nickel (ii) sulphur
D (i) nickel (ii) oxygen
The catalyst used in the manufacture of DDT (from chloral and chlorobenzene) is
A Dilute H2SO4
B Oleum
C Ultraviolet light
D None of these
The catalyst used in the manufacture of DDT is
A Alumina
B Silica
C 20% oleum
D Aluminium chloride
Catalyst used during the manufacture of 'Vanaspati Ghee' is
A Zinc
B Nickel
C Platinum
D Copper
Which catalyst is used in the manufacture of ethylene oxide by oxidation of ethylene?
A AgO
B Al2O3
C ZnCl2
D FE2O3
Platinum catalyst used in the earlier days of sulphuric acid manufacture by contact process suffers from the drawback like
A High cost
B Fragile nature
C Easy poisoning tendency
D All of the above
A catalyst is said to be a negative catalyst, ifit
A Retards the rate of reaction
B Reduces the value of equilibrium constant
C Does not initiate the reaction
D All of the above
Effectiveness factor (E) of a catalyst pellet is defined as, E = (actual rate within pore of catalyst/rate if notsnowed by pore diffusion) Effectiveness factor for a first order reaction is given by (where, T = Thiele modulus)
A Tan hT/T
B Tan T/T
C Tan hT/tan T
D None of these
Which of the following may be viewed as a catalyst in the manufacture of soda ash by Solvay process?
A NH3
B NaCl
C CaO
D Coke

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