List of top Chemistry Questions

Out of \( \text{H}_2 \text{SO}_4 \), \( \text{H}_2 \text{SO}_3 \), \( \text{H}_2 \text{S}_2 \text{O}_8 \), peroxy acids are
\( \gamma \) \( \text{H}_2 \text{O} \) → \( \text{Z} \) is identified as
Product is/are
Glycerol \( \text{C}_3 \text{H}_8 \text{O}_3 \) reacts with \(\text{HCl} \), the product A is obtained. What is the structure of A?
Phenol is heated with phthalic anhydride in the presence of cone. H\(_2\)SO\(_4\). The product gives pink colour with alkaline ferric chloride. The product is
B can be obtained from halide by van-Arkel method. This involves reaction
\( \text{NH}_4 \text{Cl} \) is heated in a test tube. Vapours are brought in contact with red litmus paper, which changes it to blue and then to red. It is because of
Calculate pH of a buffer prepared by adding 10 mL of 0.10 M acetic acid to 20 mL of 1 M sodium acetate [\( \text{CH}_3\text{COOH} \)] at \( \text{pH} = 4.74 \).
An optically active compound \( X \) has molecular formula \( C_4H_8O_3 \), it evolves \( \text{CO}_2 \) with aqueous NaHCO\(_3\). \( X \) reacts with LiAlH\(_4\) to give an achiral compound. \( X \) is
Which of the following is/are \( \alpha \)-amino acid?
Treating anisole with the following reagents, the major product obtained is I. \( \text{CH}_3 \), CCl\(_3\), II. Cl\(_2\), FeCl\(_3\), III. HBr, Heat
When a monosaccharide forms a cyclic hemiacetal, the carbon atom that contained the carbonyl group is identified as the … carbon atom, because
The equivalent conductance of silver nitrate solution at 250°C for an infinite dilution was found to be \( 133.30 \, \text{S cm}^2 \text{equiv}^{-1} \). The transport number of \( \text{Ag}^+ \) ions in very dilute solution of \( \text{AgNO}_3 \) is 0.464. Equivalent conductances of \( \text{Ag}^+ \) and \( \text{NO}_3^- \) at infinite dilution are respectively
Ketones \( [\text{R}-\text{C}(\text{R})=O] \), where \( R = \text{alkyl} \) group can be obtained in one step by
Consider the following reaction sequence:
Isomers are:
The reaction between COOH and NaHCO\(_3\) is:
Benzene diazonium chloride on treatment with hypophosphorous acid and water yields benzene. Which of the following is used as a catalyst in this reaction?
Which of the following does not undergo benzoin condensation?
The basic structural unit of silicates is
A magnetic moment of 1.73 BM will be shown by one among the following
XeF2 is isostructural with
Which of the following is electron-deficient?
Which one of the following molecules contains no π bond ?
Which of the following is a polar molecule ?
Which of the following is paramagnetic ?