Engineering Chemistry I Mock Test 6

10%

Question 1 of 10

1. Reactions which are bimolecular yet following ___________ order kinetics are called pseudo unimolecular reaction.

Second

Third

First

Zero

Question 1 of 10

Question 2 of 10

2. Positive charge of carbocations can be dispersed by __________

All of the mentioned

Hyperconjugation in 1⁰, 2⁰ and 3⁰ carbocations

(+I) effect of alkyl group

Resonance in allyl or benzyl carbocation

Question 2 of 10

Question 3 of 10

3. When the nucleophile :OR attacks the RX, the resultant product will be ___________

R – OH

R:CN

ROR

RNHR

Question 3 of 10

Question 4 of 10

4. Which of the following is rate determining step in electrophilic substitution reaction?

Generation of electrophile

Attack by an electrophilic reagent on benzene ring

All of the mentioned

Formation of product

Question 4 of 10

Question 5 of 10

5. The halide ion is an extremely ___________

Weak base

Strong acid

Weak acid

Strong base

Question 5 of 10

Question 6 of 10

6. Select the correct statement from the following option.

It possess an unshared pair of electron

All of the mentioned

In carbanion, central carbon atom carries negative charge

Carbanion is the intermediate compound

Question 6 of 10

Question 7 of 10

7. The reaction rate is greatly influenced by ___________

It does not depend on either nature or strength of the reactant molecules

Both nature and strength of the reactant molecules

Strength of bond in the reactant molecules

Nature of bond in the reactant molecules

Question 7 of 10

Question 8 of 10

8. The rate of nucleophilic substitution reactions are higher in the presence of ___________

Electron withdrawing groups

Both electron withdrawing and releasing groups

Electron releasing groups

None of the mentioned

Question 8 of 10

Question 9 of 10

9. Molecularity of a reaction is equal to the total number of _____________

Reactants and products in the elementary step

Products formed in the elementary step

Reactants and products in the final step

Reactants taking part in elementary step

Question 9 of 10

Question 10 of 10

10. Select the correct option from the following option.

Catalyst is used to increase the rate of reaction by altering chemically during the course of reaction

Catalyst is used to increase the rate of reaction and remains unaltered chemically during the course of reaction

Catalyst is used to decrease the rate of reaction by altering chemically during the course of reaction

Catalyst is used to decrease the rate of reaction and remains altered chemically during the course of reaction

Question 10 of 10