Question : In organic chemistry, which of the following is an empirical rule used to predict the regioselectivity of electrophilic addition reactions of alkanes and alkynes?
Option 1: Cornforth’s rule
Option 2: Bredt’s rule
Option 3: Markovnikov’s rule
Option 4: Baldwin’s rule
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Correct Answer: Markovnikov’s rule
Solution : The correct answer is Markovnikov’s rule.
Certain chemical addition reactions can be described by Markovnikov's rule, commonly referred to as Markovnikov's rule. As per this rule, the carbon (C) atom with fewer hydrogen atoms is bound by the nucleophilic X-, whereas the carbon atom with more hydrogen atoms attached to it is bound by the proton.
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Question : Manimekalai describes the story of which of the following?
Option 1: Kovalan and Madhavi’s Daughter
Option 2: Kovalan’s wife Madhavi
Option 3: Kovalan’s first wife Kannagi.
Option 4: Kovalan and Madhavi’s Son
Question : The following sentence has been divided into segments. One of them may contain an error. Select the segment that contains the error from the given options. If you don’t find any error, mark ‘No Error’ as your answer.
No talking / on the dinner table / is an absolute rule.
Option 1: No talking
Option 2: No Error
Option 3: on the dinner table
Option 4: is an absolute rule.
Question : Directions: A + B means A is the brother of B. A – B means A is the mother of B. A × B means A is the husband of B. A ÷ B means A is the sister of B. If P ÷ Q – R + S – K × L, then which of the following statements is correct?
Option 1: Q is L’s mother
Option 2: R is K’s mother’s brother
Option 3: Q is S’s sister
Option 4: R is L’s husband’s brother
Question : Select the most appropriate meaning of the given idiom. Against one’s grain
Option 1: Against the law
Option 2: Against the society
Option 3: Against one’s nature
Option 4: Against one’s family
Question : Select the most appropriate meaning of the given idiom.
Behind one’s back
Option 1: In one’s absence
Option 2: In everyone’s knowledge
Option 3: Confronting somebody
Option 4: Openly supporting someone
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