List of practice Questions

A particle of mass m₁ is moving with a velocity v₁ and another particle of mass m₂ is moving with a velocity v₂. Both of them have the same momentum but their different kinetic energies are E₁ and E₂ respectively. f m₁ > m₂ then :

A beam of light composed of red and green rays is incident obliquely at a point on the face of a rectangular glass slab. When coming out on the opposite parallel face, the red and green rays emerge from

The density of the newly discovered planet is twice that of earth. The acceleration due to gravity at the surface of the planet is equal to that at the surface of the earth. If the radius of the earth is R, the radius of the planet would be

A car is moving towards a high cliff. The car driver sounds a horn of the frequency 'f'. The reflected sound heard by the driver has a frequency of 2f. If 'v' is the velocity of sound then the velocity of the car, in the same velocity\ units, will be

Which one of the following statements is true for the speed 'v' and the acceleration 'a' of a particle executing simple harmonic motion

The unit of permittivity of free space ε₀ is

Angular velocity of minute hand of a clock is

The poisonous gas obtained on exposing chloroform to air and sunlight is

Vinegar is:

Serum is

If the lines $\frac{x-1}{2}=\frac{y+3}{3}=\frac{z-1}{4}$ and $\frac{x-3}{1}=\frac{y-k}{2}=\frac{z}{1}$ intersect, then the value of k is

Cilia are :

Bacteriophages are :

Bhopal gas tragedy occurred in

Beryllium and aluminium exhibit many properties which are similar. But, the two elements differ in

$SO_2$ acts as temporary bleaching agent but $Cl_2$ acts as permanent bleaching agent. Why ?

When 2.0 g of a non-volatile solute was dissolved in 90 gm of benzene, the boiling point of benzene is raised by 0.88 K. Which of the following may be the solute ?$(K_b\, for \,benzene = 2.53 K kg mol^{-1})$

In the relation $ y=a\,\,\cos \left( \omega t-kx \right) $ ,the dimensional formula for $k$ is :

Grassland with scattered trees is called

Which of the following liquid pairs shows a positive deviation from Raoult's law?

The total current supplied to the circuit by the battery is

The spring extends by $x$ on loading, then energy stored by the spring is : (if $T$ is the tension in spring and $k$ is spring constant)

RBCs are nucleated in

The rotational kinetic energy of a body is $ {{K}_{rot}} $ and its moment of inertia is $ I $ . The angular momentum of body is:

Consider the ground state of $Cr$ atom $(Z = 24)$. The number of electrons with the azimuthal quantum numbers $l =1$ and $2$ are respectively