Question
Which of the following organic compounds undergo
nucleophilic substitution reaction most easily?Solution
The rate of a nucleophilic substitution reaction depends heavily on how easily the leaving group (halogen atom) can depart from the molecule. In alkyl halides like CH₃X (X = halogen), the leaving group ability follows this trend: I - > Br - > Cl - > F - This is because: Iodide (I⁻) is the largest and least basic halide ion, and thus it leaves most easily. Fluoride (F⁻) is small and strongly bonded to carbon, making it a poor leaving group.
Deterrent
(i) The speech has strengthened our faith and deterrent .
(ii) They seriously believe that capital punishment is a deterrent .
Direction: In each of the questions given below, four words are given in bold. These four words may or may not be in their correct position. The senten...
Notion
I. One common Chinese notion is that the elders ought to be respected.
II. I haven't the faintest notion what they mean.
III...
Disproportionate
In each question below, word is used in four different ways. Choose the option in which the usage of the word is INCORRECT or INAPPROPRIATE.
(A)...
Select the wrongly spelt word.
Commend
(i) I could find no real fault with it so I would heartily commend it for use.
(ii) The judges also want to specially commend the ...
Select the most appropriate antonym of the given word.
MINISCULE
Select the most appropriate antonym of the given word.
Emancipate
Select the most appropriate ANTONYM of the given word.
FEEBLE
