List of top Questions asked in BITSAT- 2026

A particle moves under the effect of a force \( F = Cx \) from \( x = 0 \) to \( x = x_1 \). The work done in the process is

An evacuated glass vessel weighs 40.0 g when empty, 135.0 g when filled with a liquid of density 0.95 g mL\(^{-1}\) and 40.5 g when filled with an ideal gas at 0.82 atm at 250 K. The molar mass of the gas in g mol\(^{-1}\) is: (Given: R = 0.082 L atm K\(^{-1}\) mol\(^{-1}\))

Decreasing order of reactivity towards electrophilic substitution for the following compounds is:

A car is moving on a horizontal curved road with radius 50 m. The approximate maximum speed of car will be, if friction between tyres and road is 0.34. [Take \( g = 10 \) ms\(^{-2}\)]

An object of mass 5 kg is thrown vertically upwards from the ground. The air resistance produces a constant retarding force of 10 N throughout the motion. The ratio of time of ascent to the time of descent will be equal to: [Use \( g = 10 \) ms\(^{-2}\)]

The locus of the mid-point of a chord of the circle \( x^2 + y^2 = 4 \), which subtends a right angle at the origin is

The variance of 20 observations is 5. If each observation is multiplied by 2, then the new variance of the resulting observation is

Let \( f(x) = \sin x \), \( g(x) = \cos x \), \( h(x) = x^2 \) then
\[ \lim_{x \to 1} \frac{f(g(h(x))) - f(g(h(1)))}{x - 1} = \]

Half-life of zero order reaction \( A \to \) product is 1 hour, when initial concentration of reactant is 2.0 mol L\(^{-1}\). The time required to decrease concentration of A from 0.50 to 0.25 mol L\(^{-1}\) is:

Which hydride among the following is less stable?

Pick the correct statement about electron and photon:

The one giving maximum number of isomeric alkenes on dehydrohalogenation reaction is (excluding rearrangement):

A steel rod of diameter 1.0 cm is clamped firmly at each end when its temperature is 25°C so that it cannot contract on cooling. The tension in the rod at 0°C is (\(\alpha = 1 \times 10^{-5} /^\circ\)C, \(Y = 2 \times 10^{11}\) N/m²)

A man of mass \(m\) starts falling towards a planet of mass \(M\) and radius \(R\). As he reaches near to the surface, he realizes that he will pass through a small hole in the planet. As he enters the hole, he sees that the planet is really made of two pieces: a spherical shell of negligible thickness of mass \(3M/4\) and a point mass \(M/4\) at the centre. Change in the force of gravity experienced by the man is

In a mixture of gases, the average number of degrees of freedom per molecule is 6. The rms speed of the molecule of the gas is \(c\), then the velocity of sound in the gas is

An ideal spring with spring-constant \(k\) is hung from the ceiling and a mass \(M\) is attached to its lower end. The mass is released with the spring initially unstretched. Then the maximum extension in the spring is

If \( A = 1 + r^a + r^{2a} + r^{3a} + \cdots \infty \) and \( B = 1 + r^b + r^{2b} + r^{3b} + \cdots \infty \), then \( a/b \) is equal to

If the system of linear equations \( 2x + y - z = 7 \), \( x - 3y + 2z = 1 \), \( x + 4y + \delta z = k \) (where \(\delta, k \in \mathbb{R}\)) has infinitely many solutions, then \(\delta + k\) is equal to: