List of top Questions asked in VITEEE

When a monosaccharide forms a cyclic hemiacetal, the carbon atom that contained the carbonyl group is identified as the … carbon atom, because

Which of the following is/are \( \alpha \)-amino acid?

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

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

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

Ketones \( [\text{R}-\text{C}(\text{R})=O] \), where \( R = \text{alkyl} \) group can be obtained in one step by

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

If the work done in turning a magnet of magnetic moment \( M \) by an angle of \( 90^\circ \) from the magnetic meridian is in times the corresponding work done to turn it through an angle of \( 60^\circ \), then the value of \( n \) is

The capacitance of a parallel plate capacitor with air as dielectric is \( C \). If a slab of dielectric constant \( K \) and of the same thickness as the separation between the plates is introduced so as to fill \( \frac{1}{4} \)th of the capacitor (shown in figure), then the new capacitance is

Seven resistances are connected between points A and B as shown in adjoining figure. The equivalent resistance between A and B is

Which of the following does not undergo benzoin condensation?

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?

Consider the following reaction sequence:

Isomers are:

When a certain metallic surface is illuminated with monochromatic light of wavelength \( \lambda \), the stopping potential for photoelectric current is \( V_0 \). When the same surface is illuminated with a light of wavelength \( 2\lambda \), the stopping potential is \( V_1 \). The threshold wavelength for this surface to photoelectric effect is

In the \( I-V \) diagram shown in adjoining figure, what is the relation between \( P_1 \) and \( P_2 \)?

If a gas mixture contains 2 moles of O\(_2\) and 4 moles of Ar at temperature \( T \), then what will be the total energy of the system (neglecting all vibrational modes)?

In the adjoining figure, two pulses in a stretched string are shown. If initially their centres are 8 cm apart and they are moving towards each other, with speed of 2 cm/s, then total energy of the pulses after 2 s will be

When two waves of almost equal frequency \( n_1 \) and \( n_2 \) are produced simultaneously, then the time interval between successive maxima is

A long glass capillary tube is dipped in water. It is known that water wets glass. The water level rises by \( h \) in the tube. The tube is now pushed down so that only a length \( h/2 \) is outside the water surface. The angle of contact at the water surface at the upper end of the tube will be

In the adjoining circuit, if reading of voltmeter \( V_1 \) and \( V_2 \) are 300 volts, each, then the reading voltmeter \( V_3 \) and ammeter \( A \) are respectively

If a current \( I \) is flowing in a loop of radius \( r \) as shown in the adjoining figure, then the magnetic field induction at the center O will be

Two identical magnetic dipoles of magnetic moment \( 1.0 \, \text{Am}^2 \) each, placed at a separation of 2 m with their axes perpendicular to each other. The resultant magnetic field at a point midway between the dipoles is

The natural frequency of the circuit shown in adjoining figure is

A lead shot of 1 mm diameter falls through a long column of glycerine. The variation of the velocity with distance covered (s) is correctly represented by