List of top Questions asked in VITEEE, NEET (UG)

Which of the following techniques is most suitable for purification of cyclohexanone from a mixture containing benzoic acid, isoamyl alcohol, cyclohexane and cyclohexanone?

In graphite, electrons are

At maturity, which of the following is non- nucleated?

Protein present in cartilage is

Calcium is obtained by the

For two ionic solids $CaO $ and $KI$, identify the wrong statement among the following.

Ketones [RCOR1] where $R=R_1 =$ alkyl group, can be obtained in one step by

Which of the following statement is correct?

NADPH is generated through

Pebrine is a disease of

The hereditary material present in the bacterium E.coli is

The period of revolution of planet A around the sun is 8 times that of B. The distance of A from the sun is how many times greater than that of B from the sun?

The structural formula of hypophosphorous acid is

To obtain a $p$-type germanium semiconductor, it must be doped with

The element with the atomic number 118, will be

Elemental silicon to be used as a semiconductor is purified by

The plot of concentration of the reactant versus time for a reaction is a straight line with a negative slope. This reaction follows

In a reversible reaction, the energy of activation of the forward reaction is 50 kcal. The energy of activation for the reverse reaction will be

The structure and hybridisation of $Si(CH_3)_4$ is

The momentum of a particle having a de-Broglie wavelength of $10^{17}$ m is (Given, $h = 6.625 \times 10^{-34}$ m)

In reference to biological role, $Ca^{2+}$ ions are important in

Sucrose in water is dextrorotatoiy, $[\alpha]_D$ =+ 66.4$^{\circ}$ when boiled with dil. HCl, the solution becomes leavo rotatory, $[\alpha]_D$ = - 39.9$^{\circ}$. In this process the sucrose breaks into

0.24 g of a volatile gas, upon vaporisation, gives 45 mL vapour at NTP. What will be the vapour density of the substance ? (Density of $ H_2 = 0.089$)

A moving body of mass $m$ and velocity $3\, km / hr$. Collides with a body at rest and of mass $2\, m$ and then sticks to it. Now the combined mass starts to move, then the combined velocity will be :

A \(10\ eV\) electron is circulating in a plane at right angles to a uniform field at magnetic induction \({10}^{- 4}\ Wb/m^2\) (= \(1.0\) gauss), the orbital radius of electron is