List of practice Questions

Who is the founder of Paytm?

Which vitamin is known as hormone vitamin?

Jawaharlal Nehru University, Delhi was established in which year?

Where is the Headquarters of SAARC located?

Amartya Sen won the Nobel Prize in the field of Economics in the year ____ .

Which Novel has been nominated for International Booker Prize 2023?

Which country signed an agreement with the European Union to collaborate on responsible advancements in Artificial Intelligence?

Lattice enthalpy for NaCl is +788 kJ mol^-1 and ΔH°_hyd= -784 kJ mol^-1. Enthaply of solution of NaCl is

When a p-n junction diode is in forward bias, which type of charge carriers flows in the connecting wire?

Let f(x)=πcosx+x².The value of c∈(0,π) where f attains its local maximum/minumum is

A particle at rest starts from the origin with a constant acceleration a that makes an angle 60° with the positive y-axis. If its displacement along y-axis is 10m in time 2s,then the magnitude of a is:

For a given electric current the drift velocity of conduction electrons in a copper wire is v_d and their mobility is μ . When the current is increased at constant temperature

The horizontal component of Earth’s magnetic field at a place is 3 × 10^-5 T. If the dip at that place is 45°, the resultant magnetic field at that place is

The speed of sound in an ideal gas at a given temperature T is v. The rms speed of gas molecules at that temperature is v_rms. The ratio of the velocities v and v_rms for helium and oxygen gases are X and X' respectively. Then \(\frac{X}{X'}\) is equal to

A particle is in uniform circular motion. Related to one complete revolution of the particle, which among the stataments is incorrect ?

 
'L' in the above sequence of reaction is/are(where L≠M≠N)

Five capacitors each of value 1 μF are connected as shown in the figure. The equivalent capacitance between A and B is

100 g of ice at 0 °C is mixed with 100 g of water at 100 °C. The final temperature of the mixture is
[Take L_f= 3.36 × 10⁵ J kg^-1 and S_w = 4.2 × 10³ J kg^-1 k-¹]

Study the following information to answer the given question :
A, B, C, D, E, F, G and H are eight family members sitting around a circle facing towards the
centre.
(i)H is on the immediate left of A but is not the neighbour of E or D.
(ii)F is on the immediate right of B and G is the neighbour of E.
(iii) C is between E and F.
What is the position of D?

A body of mass 10 kg is kept on a horizontal surface. The coefficient of kinetic friction between the body and the surface is 0.5. A horizontal force of 60N is applied on the body. The resulting acceleration of the body is about

Let F: R³ →R² be the linear map defined by F(x, y, z) = (3x+2y-4z, x-5y+3z). The basis of R³ is S and basis of R² is S', where S = {(1, 1, 1), (1, 1, 0), (1, 0, 0)} and S' = {(1, 3), (2, 5)}. Then the matrix of F in the bases of R³ and R² is

If A and B are events such that P(A)=\(\frac{1}{4}\), P(A/B)=\(\frac{1}{2}\) and P(B/A)=\(\frac{2}{3}\) then P(B) is

The number of protons, neutrons and electrons in the ion \(^{32}_{16}S^{2-}\) respectively are

Two pendulums of length 121 cm and 100 cm start vibrating in phase. At some instant, the two are at their mean position in the same phase. The minimum number of vibrations of the shorter pendulum after which the two are again in phase at the mean position is: