Related Questions

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
Catalyst used in the 'catalytic converter' employed in automobile exhaust line for complete combustion/oxidation of carbon monoxide, nitrogen oxides and hydrocarbons is
A Alumina
B Platinum
C Vanadium pentoxide
D Iron oxide
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
Automobile exhaust is passed through two compartments catalytic converter employing platinum as catalyst for
A Conversion of CO into CO2 in the second compartment
B Conversion of NOx into N2 and NH3 in the first compartment
C Oxidation of unburnt hydrocarbon fuel in the second compartment
D All of the above
In __________ converter for ammonia synthesis, the catalyst is arranged in the form of a single continuous bed.
A Fauser-Monte Catini
B Claude
C Udhe
D Kellog
ইলাস্ট্রেটরে অক্ষরের আউটলাইন তৈরি করার কমান্ড হলো- i. shift + ctrl চেপে O বোতামে চাপii. Type মেনু থেকে create outline iii. shift + Alt চেপে O বোতামে চাপ নিচের কোনটি সঠিক?
A i ও ii
B i ও iii
C ii ও iii
D i, ii ও iii
In a phase-shift control method, the phase shift between anode and grid voltages can be achieved by means of
A Shunt motor
B Synchronous motor
C Induction regulator
D Synchronous generator
A shift register moves the _____ left or right. Serial loading means storing a word in a shift register by entering _____ bit per clock pulse. With parallel or broadside loading, it takes only one _____ pulse to load the input word.
A light, eight, clock
B right, eight, clock
C bits, one, register
D bits, one, clock
E None of the above
The gear shift lever requires two separate motions to shift gears, and the first movement
A Moves the synchronizer
B Selects the synchronizer
C Meshes the gears
D Operates the clutch

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