List of top Chemistry Questions

Product is/are

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 \( \text{pH} = 4.74 \).

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

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

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:

Benzene diazonium chloride on treatment with hypophosphorous acid and water yields benzene. Which of the following is used as a catalyst in this reaction?

The reaction between COOH and NaHCO\(_3\) is:

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 ?

The structure of isobutyl group in an organic compound is

Reaction by which Benzaldehyde cannot be prepared

Which of the following compounds will not undergo Friedal-Craft's reaction easily?

The radical is aromatic because it has

Among the following four structures $I$ to $IV$, it is true that

Figure shows a copper rod joined to a steel rod. The rods have equal length and equal crosssectional area. The free end of the copper rod is kept at $0^{\circ} C$ and that of steel rod is kept at $100^{\circ} C$. Find the temperature of the junction of the rod. Conductivity of copper $=390 W / m ^{\circ} C$. Conductivity of steel $=46 W / m ^{\circ} C$