Free Nomenclature, Structure and Reactivity MCQs with Answers
29 Nomenclature, Structure and Reactivity MCQs from Chemistry, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Alkyl halides are named by selecting the longest carbon chain and locating the halogen substituent, while their structures are classified as primary, secondary or tertiary. Their reactivity includes nucleophilic substitution and elimination, with the behaviour of leaving groups and the distinction between SN1 and SN2 mechanisms linked to substrate structure.
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29 questions · page 2 of 2
- A. Cl, Br, I, F
- B. F, CI, Br, I
- C. Br, I, F, CI
- D. I, F, Cl, Br
Explanation: The correct reactivity order of alkyl halides is R-F < R-Cl < R-Br < R-I because the C-F bond is the strongest (making fluorine the least…
Correct answer: F, CI, Br, I- A. Alkyl Halide and Mg
- B. Alkane and Mg
- C. Alcohol and Mg
- D. None of them
Explanation: Alkyl Halide and Mg extremely good nucleophiles, reacting with electrophiles such as carbonyl compounds and epoxides
Correct answer: Alkyl Halide and Mg- A. CH3F
- B. CH3I
- C. CH3Cl
- D. CH3Br
Explanation: The carbon-halogen bond length is determined by the size of the halogen atom. The larger the halogen atom, the longer the bond length.
Correct answer: CH3F- A. (C2H2Cl2)2S
- B. (C2H4Cl2)2S
- C. (C2H3Cl2)2S
- D. (C2H4Cl)2S
Explanation: The correct formula for mustard gas is (C2H4Cl)2S. Mustard gas is a sulfur mustard with each carbon chain containing one chlorine atom…
Correct answer: (C2H4Cl)2S- A. CH3CH2CHO
- B. CH3CH2CH2OH
- C. CH3CH2COOH
- D. CH3CH2CH2Br
Explanation: This is called Lalaigne's test, which is done for the detection of halogens. While all the other options given do not have halogens.
Correct answer: CH3CH2CH2Br- A. R - I > R - Br > R - Cl > R - F
- B. R - Br > R - I > R - F > R - Cl
- C. R - F > R - Cl > R - Br > R - I
- D. R - Cl > R - I > R - Br > R - F
Explanation: Alkyl halides reactivity is influenced by the bond strength between the carbon (C) and halogen (X) atoms.
Correct answer: R - I > R - Br > R - Cl > R - F- A. Methyl chloride
- B. Methyl iodide
- C. Methyl bromide
- D. Both a and b
Explanation: For the same alkyl group the boiling points of haloalkanes are in the order RCl < RBr < RI, because with the increase in the size of…
Correct answer: Methyl iodide- A. Methyle chloride
- B. Methyle fluoride
- C. Methyle bromide
- D. Methyle iodide
Explanation: methyl iodide generally has the highest boiling point. Boiling point is a measure of how easily a compound changes from a liquid to a gas.
Correct answer: Methyle iodide- A. R-Br > R-CL > R-F > R-I
- B. R-Br > R-F > R-I > R-CI
- C. R-I > R-Br > R-Cl > R-F
- D. R-Cl > R-I > R-Br > R-F
Explanation: The reactivity of alkyl halides towards nucleophilic substitution reactions follows the order:R-I (alkyl iodide) > R-Br (alkyl bromide) >…
Correct answer: R-I > R-Br > R-Cl > R-F