Organic Chemistry Mock Test 9

10%

Question 1 of 10

1. Which of the following statements regarding optical rotation is not true?

(+) and (-) enantiomers rotate plane polarized light in opposite directions

All R enantiomers are dextrorotatory

All (-) enantiomers rotate plane polarized light in a counter clockwise direction

All (+) enantiomers are laevorotatory

Question 1 of 10

Question 2 of 10

2. Which of the following compound(s) is/are achiral?

I and II

III

Question 2 of 10

Question 3 of 10

3. Which of the following compounds is a meso compound?

(2R,3R)-3-bromo-2-butanol

(2R,3S)-3-bromo-2-butanol

(2R,3R)-dibromobutane

(2R,3S)-dibromobutane

Question 3 of 10

Question 4 of 10

4. Which of the following is not true about the five membered rings?

Five membered rings are more stable than 6 membered rings

Five membered rings are more stable than 4 membered rings

Five membered rings are more stable than 7 membered rings

Five membered rings are more stable than 8 membered rings

Question 4 of 10

Question 5 of 10

5. The given compound is meso compound.

False

True

Question 5 of 10

Question 6 of 10

6. Which of the following statements is not true regarding pairs of enantiomers?

They react at identical rates with chiral reagents

They have identical boiling points

They rotate plane polarized light in opposite directions

They have identical melting points

Question 6 of 10

Question 7 of 10

7. Which of the following groups has the highest priority according to the Cahn-Ingold-Prelog sequence rules?

CH₂OH

CH₂Cl

CH₃

CHO

Question 7 of 10

Question 8 of 10

8. When diazonium salt solution is treated with KI, it forms which of the following compound?

Acid

Bromobenzene

Iodobenzene

Phenol

Question 8 of 10

Question 9 of 10

9. Which symmetry element makes the given compound achiral?

Plane of symmetry (POS)

Alternating axis of symmetry (AAOS)

Axis of symmetry (AOS)

Center of symmetry (COS)

Question 9 of 10

Question 10 of 10

10. In Ter Meer reaction, a method of preparation of nitro compound, which of the following used as reagent?

RX (alkyl halide)

HNO₂

NaNO₂

HNO₃

Question 10 of 10