The excess energy of reactants in a chemical reaction required to dissociate into products is termed as the _______________ energy?

Related Mcqs:

1. The excess energy of the reactants required to dissociate into products is known as the ________________ energy?

   A. Thermal
   B. Activation
   C. Threshold
   D. Binding

2. Rate constant for a first order reaction does not depend upon reaction time, extent of reaction and the initial concentration of reactants; but it is a function of reaction temperature. In a chemical reaction, the time required to reduce the concentration of reactant from 100 gm moles/litre to 50 gm moles/litre is same as that required to reduce it from 2 gm moles/litre to 1 gm mole/litre in the same volume. Then the order of this reaction is ?

   A. 0
   B. 1
   C. 2
   D. 3

3. The minimum energy required to allow a chemical reaction to proceed is termed as the ‘threshold energy ‘. Chemical reactions with low activation energy are ________________?

   A. Always irreversible
   B. Insensitive to temperature changes
   C. Mostly irreversible
   D. Highly temperature sensitive

4. In a reversible chemical reaction having two reactants in equilibrium, if the concentration of the reactants are doubled, then the equilibrium constant will________________?

   A. Remain the same
   B. Be halved
   C. Also be doubled
   D. Become one fourth

5. In a reaction, the threshold energy is equal to (where, A = activation energy N = normal energy of reactants) ?

   A. A
   B. N
   C. A + N
   D. A – N

6. For the chemical reaction P → Q, it is found that the rate of reaction doubles as the concentration of ‘P’ is doubled. If the reaction rate is proportional to Cp n, then what is the value of ‘n’ for this chemical reaction ?

   A. 0
   B. 1
   C. 2
   D. 3

7. Rate of a chemical reaction is independent of the concentration of the reactants for a _________________ reaction?

   A. Zero order
   B. Third order
   C. Consecutive
   D. None of these

8. What is the order of a chemical reaction in which doubling the initial concentration of the reactants doubles the half life time of the reaction ?

   A. 0
   B. 1
   C. 2
   D. 3

9. 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. 1
   B. 2
   C. 3
   D. 4

10. In an exothermic chemical reaction, the reactants compared to the products have__________________?

    A. Higher temperature
    B. More energy
    C. Less energy
    D. Same energy