1. What will be the products when reactants are alcohol & thionyl chloride in the presence of pyridine?
A. RCl+S+HCl
B. RCI+SO2+HCl
C. RCl+SO2+H2O
D. RCl+S+H2O
✅ The correct answer is option B.
Alkyl Halides MCQs
2. Which C-X bond has the highest bond energy per mole?
A. C-F
B. C-Cl
C. C-Br
D. C-I
✅ The correct answer is option A.
3. Which alkyl halide has the highest reactivity for a particular alkyl group?
A. R-F
B. R-Cl
C. R-Br
D. R-I
✅ The correct answer is option D.
4. Ethyl chloride with nascent hydrogen produces
A. Methane
B. Ethane
C. Propane
D. Butane
✅ The correct answer is option B.
5. Which one is not a nucleophile?
A. C2H5O-
B. SCN-
C. NH3
D. H3C+
✅ The correct answer is option D.
6. The number of molecules taking part in the rate determining step is called
A. Order of reaction
B. Rate of reaction
C. The mole of a reaction
D. The extent of a reaction
✅ The correct answer is option A.
7. During SN2 mechanism carbon atom changes its state of hybridization as
A. sp→sp2
B. sp2→sp3
C. sp3→sp
D. sp3→sp2
✅ The correct answer is option D.
8. What will be the order of reaction of a reaction whose rate can be expressed as R = K [A] [B]?
A. 0
B. 1
C. 2
D. 3
✅ The correct answer is option C.
9. Which one among the following is not a good leaving group?
A. HSO4
B. CI-
C. OH-
D. Br-
✅ The correct answer is option C.
10. What is the order of kinetics in the SN1 mechanism?
A. Zero
B. First
C. Second
D. Third
✅ The correct answer is option B.