At start of reaction the concentration of reactants is_______________?

Related Mcqs:

1. Rate of reaction when concentration of reactants are taken as unity is called_________________?

   A. Arrhenius constant B. Molecularity C. Specific rate constant D. Ideal rate constant...

2. In rate expression the concentration of reactants is negative. It shows_______________?

   A. Concentration of reactant does not change B. Concentration of product increases C. Concentration of reactant decreases D. Concentration of reactant increases...

3. Consider the following reaction- 3Cl2 + 6NaOH ? NaClO3 + 5NaCl + 3H2O This reaction is_______________?

   A. Displacement reaction B. Double displacement reaction C. Disproportionation reaction D. Reduction reaction...

4. When catalysts and reactants are in more than one phase it is________________?

   A. Homogeneous catalysis B. Heterogeneous catalysis C. Catalysis D. Ea...

5. Which one of the following reactants will be required to form straight chain alcohol by using Grignard reagent________________?

   A. formaldehyde B. ketone C. ethylene epoxide D. both A & C...

6. Rate of enzymatic reaction is directly proportional to the concentration of___________________?

   A. Enzyme B. Substrate C. Enzyme and substrate D. Enzyme and product...

7. 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...

8. Energy of activation for backward reaction is less than forward reaction for ___________ reactio?

   A. Endothermic B. Exothermic C. Moderate D. Fast...

9. Consider the following reaction- 2KCIO3 + H2C2O4 + H2SO4 ? K2SO4 + 2H2O + 2CO2 + Oxide Which oxide of chlorine is produced in the above reaction ?

   A. Cl2O B. ClO2 C. Cl2O6 D. Cl2O7...

10. What will be the order of reaction of a reaction whose rate can be expressed as R = K [A] [B] ?

    A. Zero B. One C. Two D. Three...