List of top Questions asked in JEE Main, KCET

Sum of the number π and nt bonds in the ethylene molecule is x. The value of x is

One litre solution of 0.2 M glucose is separated with its pure solvent with semi-permeable membrane, 0.1 moles of NaCl is added to the solution. The change in osmotic pressure of solution will be at 300 K _____ . (take R = 0.083)

Identify the change occuring in oxidation state of Mn in cell reaction of dry cell of clock during its use

The value of $∫_0^{\frac{\pi}{4}} \frac{dx}{1+tanx} $

A rectangle ABCD with ABCD with AB = 2 and BC = 4 is inscribed in rectangle PQRS such that vertices of ABCD lie on sides of PQRS then maximum possible area(in sq. unit) of rectangle PQRS is :

When 4 dice are rolled, then the probability of 16 as a sum is:

Let f(x) = $x^2 - 5x$ and $g(x) = 7x - x^2$, then the area between the curves equals to:

In which of the following compounds Mn has the highest oxidation state?

Consider the following statements:
Statement I: Stability of +1 oxidation state increases down the group in group-13.
Statement II: Atomic radius of Ga is greater than that of Al.

The molar conductivities of a divalent cation (M²⁺) and monovalent anion (A^-) are 57 S cm^-1 mol^-1 and 73 S cm^-1 mol^-1 respectively. Then find the total molar conductivity shown by their compound in S cm^-1 mol^-1

If $f(x)= x^5 + 2x^3 + 3x + 1$ and $g(f(x)) = x,$ then $\frac{g(1)}{g’(1)}$ is equal to

20R resistance wire is cut into 10 equal parts. Now each part first is connected in series and then in parallel. Find ratio of equivalent resistance in both cases (Rseries : Rparallel)

For what boolean values of A, B & C the given logic gate gives output of zero?

In sonometer, fundamental frequency changes from 400 Hz to 500 Hz keeping same tension. Find percentage change in length.

Sum of O atoms in A and B is ?

Arrange the following carbocations in increasing order of their stability.
I) \((CH_3)_3C^{\oplus}\)
II) \((CH_3)_2\overset{{\oplus}}{C}H\)
III) \(\overset{{\oplus}}{C}H_3\)
IV) \(CH_3\overset{{\oplus}}{C}H_2\)

Which postulate of Dalton's theory is wrong

In thermodynamics adiabatic process, pressure is directly proportional to cube of absolute temperature. Find $\frac{C_P}{C_V} $for the gas.

A block of mass 50 kg is moving with speed of 10 m/s on a rough horizontal surface (friction coefficient of 0.3). Find the kinetic friction acting on the object.

A solid sphere is rolling without slipping. Find the ratio of rotational kinetic energy to total kinetic energy of sphere.

Equanil drug is used for which disease?

Which of the following molecule is an acidic oxide?

Number of π bonds present in product B is:

In an atom, how many electrons can have
(i) n = 4 (ii) m1 =1 (iii) ms = ½

How many of the following have zero dipole moment $H_2S, CH_4, NH_3, BF_3, SO_2, NF_3$