The value of activation energy is primarily determined by_______________?
A. Temperature B. Effective collision C. Concentration of reactants D. Chemical nature of reactants and products
Chemistry MCQs
Unit of rate of reaction is_________________?
A. Moles dm-3 sec-1 B. Moles dm-3 C. Moles sec-1 D. Mol-1 dm3 sec-1
Rate of disappearance of reactant is equal to_________________?
A. Rate of reaction B. Rate of formation of product C. Energy released during reaction D. A and B
For 3rd order reaction the hhalf life is inversely proportional to initial concentration of reactants__________________?
A. Single B. Square C. Cube D. Raise to power four
Radiations are absorbed in_______________?
A. Spectrophotometer method B. Dilatometric method C. Optical relation method D. Refractometric method
Energy of reactant higher than energy of product favours A. Endothermic_______________?
B. Exothermic C. Moderate reaction D. No reaction
Which of the following will have very high rate of reaction ?
A. Double decomposition reaction B. Neutralization reaction C. Ionic reactions D. all of above
Anything which increases rate of reaction without being involved in the reaction________________?
A. Promoter B. Catalyst C. Inhibitor D. All of the above
When catalysts and reactants are in more than one phase it is________________?
A. Homogeneous catalysis B. Heterogeneous catalysis C. Catalysis D. Ea
Biocatalytical proteins are_________________?
A. Enzymes B. Substrate C. Lipids D. any of above