Browse and search thousands of solved questions for your preparation.
Free questions with full explanations — locked behind signup to protect quality.
Which of the following reactions is not an example of nucleophilic addition–elimination reaction?
An organic compound ($C_3H_9N$) (A), when treated with nitrous acid, gave an alcohol, and $N_2$ gas was evolved. (A) on warming with $CHCl_3$ and caustic potash gave (C) which on reduction gave isopropylmethylamine. The structure of (A) is:
The correct corresponding order of names of four aldoses with configuration given below respectively, is
An electron-deficient compound among the following is:
Which one of the following species has a plane triangular shape?
Propanoic acid gives a series of reactions as given below. $CH_3CH_2COOH \xrightarrow{SOCl_2} B \xrightarrow{NH_3} C \xrightarrow{Br_2/KOH} D$ The structure of D would be:
Match List-I with List-II: **List-I (Amine)** (a) Benzenamine (b) Phenylmethanamine (c) Methenamine (d) N-Ethylethanamine **List-II ($pK_b$ value)** (i) 3.38 (ii) 9.38 (iii) 4.70 (iv) 3.0 Choose the correct answer from the options given below:
Which of the following compounds is most basic? [Options Missing]
The least basic compounds/species among the following is: [Options Missing]
Which of the following is a polar molecule?
In $NO_{3}^{-}$ ion, the number of bond pair and lone pair of electrons on nitrogen atom are respectively:
Which one of the following orders is correct for the bond dissociation enthalpy of halogen molecules?
In humans, the main oxygen carrier in the blood is:
The structure that represents the peptide chain is:
Which of the following species has a linear shape?
Which of the following is not isostructural with $\text{SiCl}_4$?
The correct reaction among the following is:
Given below are two statements: Statement I: Primary aliphatic amines react with $HNO_2$ to give unstable diazonium salts. Statement II: Primary aromatic amines react with $HNO_2$ to form diazonium salts which are stable even above $300\text{ K}$. In the light of the above statements, choose the most appropriate answer from the options given below:
Among the following, reducing sugar is:
Which of the following molecule does not possess a $\pi$ bond?