Related Questions

A 'limiting reactant' is the one, which decides the __________ in the chemical reacation.
A Equilibrium constant
B Conversion
C Rate constant
D None of these
When all the limiting reactant is consumed in the reaction, the operational yield __________ the relative yield.
A Is greater than
B Is smaller than
C Equals
D Can be either greater or smaller than (depends on the type of reaction)
A chemical reaction is of zero order, when the reaction rate is (where, CA = concentration of reactant)
A $$ \propto {\text{CA}}$$
B $$ \propto \frac{1}{{{\text{CA}}}}$$
C Independent of temperature
D None of these
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 $${\text{t}} \propto {{\text{a}}^{\text{n}}}$$
রাসায়নিক বিক্রিয়ায় বিক্রিয়ক ও উৎপাদের (reactant and product of a chemical reaction ) মধ্যে মূল পরিবর্তন ঘটে কোনটি?
A অভ্যন্তরীণ শক্তি
B স্থিতি শক্তি
C গতি শক্তি
D বন্ধন শক্তি
For a first order chemical reaction, the concentration of the reactant decreases __________ with time.
A Linearly
B Exponentially
C Logarithmically
D Inversely
The conversion of a reactant, undergoing a first order reaction, at a time equal to three times the half life of the reaction is
A 0.875
B 0.5
C 0.425
D Data insufficient to calculate
The minimum energy required to allow a chemical reaction to proceed is termed as the 'threshold energy '. Chemical reaction with low activation energy are
A Always irreversible
B Insensitive to temperature changes
C Mostly irreversible
D Highly temperature sensitive
If the time required to change the concentration of reactant to half its original value is independent of the initial concentration, the order of reaction is
A Zero
B One
C Two
D Three
Half-life period for a first order reaction is __________ the initial concentration of the reactant.
A Directly proportional to
B Inversely proportional to
C Independent of
D None of these

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