List of top Questions asked in BITSAT- 2025

The work done by a gas during an isothermal expansion from 2 L to 4 L at a constant temperature, with pressure initially at 2 atm, is: (Use R = 8.314 J/mol·K, T = 300 K).

Solve for \( x \): 
\( \log_{10}(x^2) = 2 \).

What is the IUPAC name of CH$_3$CH(OH)CH$_3$?
Find the derivative of \( y = \sin(x^2) \) with respect to \( x \).
A block of mass 5 kg is placed on a frictionless surface and a force of 20 N is applied horizontally. What is the acceleration of the block?
Identify the next number in the series: 2, 6, 12, 20, ?
A source supplies heat to a system at the rate of 1000 W. If the system performs work at a rate of 200 W, what is the rate at which internal energy of the system increases?
Choose the word most nearly opposite in meaning to "benevolent".
What is the pH of a solution with [H\(^+\)] = 10\(^{-3}\) M?
What is the IUPAC name of CH\(_3\)CH\(_2\)OH?
In a series circuit, if the resistance is doubled, what happens to the current?
A body of mass 2 kg is moving with a velocity of 3 m/s. What is its kinetic energy?
What is the area of a circle with diameter 10 cm?
Find the equation of the tangent to the curve \(y = x^2\) at the point (1,1).
Solve the system of equations: \(x + y = 3\), \(x - y = 1\).
What is the value of \(\int \frac{1}{x^2 + 1} \, dx\)?
Find the focal length of a lens in a compound lens system.
What is a primary key in a relational database?
Calculate the rate constant of a reaction with a given half-life.
What is the molecular geometry of the water molecule (H₂O)?
What is the oxidation state of chromium in K₂Cr₂O₇?
What is the major product of the reaction of an alkene with bromine water?
Determine the final temperature when two bodies at different temperatures are brought into thermal contact.
Find the angle between the vectors \( \mathbf{a} = (2, 3, 1) \) and \( \mathbf{b} = (1, -1, 4) \).
A box contains 5 red balls and 3 blue balls. If two balls are drawn randomly without replacement, what is the probability that one of the balls is red and the other is blue?