Organic Chemistry Mock Test 4

10%

Question 1 of 10

1. Which of the following terms describes a reaction in where more energy is released by bond formation than is consumed by bond cleavage?

Endothermic

Exothermic

Adiabatic

Isothermal

Question 1 of 10

Question 2 of 10

2. When ethyl chloride reacts with nascent hydrogen, what is the formed product?

Methane

Butane

Ethane

Propane

Question 2 of 10

Question 3 of 10

3. Benzene reacts with chlorine to form benzene hexachloride in presence of which of the following reactant?

Bright sunlight

AlCl₃

Nickel

Zinc

Question 3 of 10

Question 4 of 10

4. Which of the following is most stable intermediate?

organic-chemistry-questions-answers-reaction-intermediates-q4c

organic-chemistry-questions-answers-reaction-intermediates-q4

organic-chemistry-questions-answers-reaction-intermediates-q4a

organic-chemistry-questions-answers-reaction-intermediates-q4b

Question 4 of 10

Question 5 of 10

5. Which of the following nucleophile can be used for partial enolization 1,3-Dicarbonyl compound?

Weak base like NaOH

Et-O^-

Sodium acetate

Lithium di-isopropyl amide (LDA)

Question 5 of 10

Question 6 of 10

6. Which of the following is most readily undergo electrophilic attack?

III

Question 6 of 10

Question 7 of 10

7. Equal volumes of C₂H₂ & H₂ are combusted under identical condition. What will be the ratio of heat evolved for C₂H₂ and H₂?
H₂ (g) + 1/2 O₂(g) → H₂O(g), ∆H=-241.8 KJ
C₂H₂ (g) + 5/2 O₂(g) → CO₂(g) + H₂O(g), ∆H=-1300 KJ

5.37/1

1/1

2.8/6.1

1/5.37

Question 7 of 10

Question 8 of 10

8. Compound undergoing homolytic bond cleavage will lead to formation of which chemical species?

Free radical

Atoms

Anion

Cation

Question 8 of 10

Question 9 of 10

9. The rate of reaction, A + B Products, is given by the equation, r = k[A][B]. If B is taken in excess, what would be the order of reaction?

zero

unpredictable

Question 9 of 10

Question 10 of 10

10. In the given molecule where will electrophile will attack?

III

Question 10 of 10