Related Questions

Catalyst used in isomerisation process is
A H2SO4
B H3PO4
C HF
D AlCl3
Isomerisation converts the __________ tot-paraffins.
A Paraffins
B Olefins
C Naphthenes
D None of these
Octane number (unleaded) of gasoline produced by isomerisation of butane may be about
A 45
B 55
C 70
D 90
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
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
Name the catalyst used in the conversion of milk into curd.
A Pepsin
B Invertase
C Lactase
D Diastase
Iron is not used alone as a catalyst in ammonia synthesis, because
A Its activity declines rapidly, if heated to above 520°C
B It decomposes ammonia
C It gets oxidised above 500°C
D None of these
The metal that is used as a catalyst in the hydrogenation of oils is
A Ni
B Pb
C Cu
D Pt
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

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