List of top Questions asked in JEE Main, KCET

Which of the particles cannot be accelerated?
The rate at which a substance reacts depends on its
In blast furnace iron oxide is reduced by
A unit vector perpendicular to the plane containing the vectors $\hat {i}-\hat {j}+\hat{k} $ and $ -\hat{i}+\hat {j}+\hat{k}$ is
The contrapositive of the inverse of $p \to \sim q$ is
If a liquid does not wet glass, its angle of contact is
A buffer solution has equal volumes of $0.2M \, NH_4OH$ and $0.02\, M \, NH_4 Cl$. The $p^{kb}$ of the base is $5$. The $pH$ is
Alum is a water purifier because it
Ethyl chloride on heating with $AgCN$, forms a compound $'X'$ . The functional isomer of $'X'$ is -
Which of the following pairs of elements cannot form an alloy ?
If the potential difference across the internal resistance $r_1$ is equal to the emf $E$ of the battery, then
Which of these does not influence the rate of reaction?
Which compound is zero valent metal complex ?
Four metal conductors having different shapes a) a sphere b) cylindrical c) pear d) Lightening conductor are mounted on insulating stands and charged. The one which is best suited to retain the charge for a longer time is
By using only two resistance coils-singly, in series, or in Parallel-one should be able to obtain resistances of $3, 4, 12$ and $16$ ohms. The separate resistances of the coil are
The magnitude of $I$ in ampere unit is
Sucrose molecule is made up of
Out of the following four dimensional quantities, which one qualifies to be called a dimensional constant ?
The pyramid of energy is always upright for any ecosystem. The situation indicates the fact that............
The site of EMP pathway of breakdown of glucose in a cell, is
$15 $ moles of $H_2$ and $5.2$ moles of $I_2$ are mixed and allowed to attain equilibrium at $500^\circ$C. At equilibrium, the concentration of $HI$ is found to be $10$ moles. The equilibrium constant for the formation of $HI$ is
The induction coil works on the principle of
The wavelength of the radiation emitted by a body depends upon
Which mirror is to be used to obtain a parallel beam of light from a small lamp?
When a body falls in air, the resistance of air depends to a great extent on the shape of the body. $3$ different shapes are given. Identify the combination of air resistances which truly represents the physical situation. (The cross sectional areas are the same)
1. Disc 2. Ball 3. cigar sheped