Related Questions

Overall rate of reaction in a heterogenous catalytic reaction depends upon the mass and energy transfer from the fluid to solid surface and its rate of reaction is usually __________ the concentration of catalyst, if it does not entail a chain mechanism.
A Proportional to
B Independent of
C Inversely proportional to
D Proportional to the square of
If n = overall order of a chemical reaction. a = initial concentration of reactant. t = time required to complete a definite fraction of the reaction. Then pick out the correct relationship.
A $${\text{t}} \propto \frac{1}{{{{\text{a}}^{\text{n}}}}}$$
B $${\text{t}} \propto \frac{1}{{{{\text{a}}^{{\text{n}} - 1}}}}$$
C $${\text{t}} \propto \frac{1}{{{{\text{a}}^{{\text{n}} + 1}}}}$$
D $${\text{t}} \propto {{\text{a}}^{\text{n}}}$$
The scientist who experimentally proved the existence of positron is
A Fermi
B Anderson
C Bohr
D Bethe
Who was the first to experimentally determine the value of the Universal Gravitational Constant (G)?
A Henry Cavendish
B Isaac Newton
C Laurent Freidel
D Johannes Kepler
A second order reaction of the form A + B → C is called a pseudo-first order reaction, when
A CA0 = CB0
B CA0 > CB0
C CB0 > CA0
D CB0 ≥ CB0
A reaction in which one of the products of reaction acts as a catalyst is called a/an __________ reaction.
A Catalytic
B Autocatalytic
C Photochemical
D None of these
The reaction in which one of the products of reaction acts as a catalyst is called a/an __________ reaction.
A Biochemical
B Photochemical
C Catalytic
D Autocatalytic
The reaction A → B is conducted in an isothermal batch reactor. If the conversion of A increases linearly with holding time, then the order of the reaction is
A 0
B 1
C 1.5
D 2
If the time required to complete a definite fraction of reaction varies inversely as the concentration of the reactants, then the order of reaction is
A 0
B 1
C 2
D 3
The overall efficiency of a reaction turbine is the ratio of
A Actual work available at the turbine to the energy imparted to the wheel
B Work done on the wheel to the energy (or head of water) actually supplied to the turbine
C Power produced by the turbine to the energy actually supplied by the turbine
D Actual work available at the turbine to energy imparted to the wheel

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