List of top Questions asked in NTA Abhyas- 2020

Which of the following can show positive deviation from Raoult's law?

A particle of mass $m$ and charge $q$ is thrown from a point in space where uniform gravitational field & electric field are present. The particle (1) may follow a straight line (2) may follow a circular path (3) may follow a parabolic path

When two bodies collide elastically. The force of interaction between them is

The dimensional formula for entropy is

The dimensional formula for permittivity of free space $\left(\left(\epsilon \right)_{0}\right)$ in the equation $F=\frac{1}{4 \pi \epsilon _{0}}\frac{q_{1} q_{2}}{r^{2}}$ , where symbols have their usual meaning, is

A ball is dropped from height $H$ on to a horizontal surface. If the coefficient of restitution is $e$ then the total time after which it comes to rest is

One mole of an ideal gas at temperature $T_{1}$ expands according to the law $\left(\right.P/V\left.\right) \, $ = constant. Find the work done when the final temperature becomes $T_{2}$ .

Moment of inertia of a disc about diameter is $I$ . Find the moment of inertia of disc about an axis perpendicular to its plane and passing through its rim.

The area bounded by the curves $\text{y} = \left(\text{x} - 1\right)^{2} \text{, } \text{y} = \left(\text{x} + 1\right)^{2}$ and $\text{y} = \frac{1}{4}$ is

Suppose that the side lengths of a triangle are three consecutive integers and one of the angles is twice another. The number of such triangles is/are

The number of ways of selecting $15$ teams from $15$ men and $15$ women, such that each team consists of a man and a woman, is

If $5^{97}$ is divided by $52$ $,$ then the remainder obtained is

If $y=4x-5$ is tangent to the curve $y^{2}=px^{3}+q$ at $\left(\right.2, \, 3\left.\right)$ then $\left(\right.p,q\left.\right)$ is

The number of discontinuity of the greatest integer function $f\left(x\right)=\left[x\right], \, x\in \left(- \frac{7}{2} , \, 100\right)$ is equal to

In the figure shown, all surfaces are smooth. Acceleration of mass $'4m'$ , when the system Is released from rest will be

If the temperature is raised by $1K$ from $300K$ , the percentage change in the speed of sound in the gaseous mixture is [ $R=8.314Jmol^{- 1}K^{- 1}$ ]

For a particle of a purely rotating body, $v=r\omega $ , so correct relation will be

For a particle moving in a straight line, the displacement of the particle at time $t$ is given by $S=t^{3}-6t^{2}+3t+7$ . The velocity of the particle when its acceleration zero is

Digital circuits can be made with the repetitive use of

Arrange in the increasing order (lowest first) for the values of $e/m$ (charge/mass)

The substance used in the thermite process of reducing metal ores is

The reaction of white phosphorus with aqueous NaOH gives phosphine along with another phosphorus containing compound. The reaction type; the oxidation state of phosphorus in phosphine and the other product are respectively

IUPAC name of complex ion $\left(\left[C r C l_{2} \left(o x\right)_{2}\right]\right)^{3 -}$ is

Alizarin is an example of