List of practice Questions

The adsorption of an inert gas on activated charcoal increases with
When the same amount of electricity is passed through solutions of silver nitrate and copper sulphate, 0.4 g copper is deposited. The amount of silver deposited is
With the addition of impurities surface tension of a liquid
Viscosity decreases with increase in temperature is the reason for (i) hot water moving faster than cold water (ii) more viscous oils are used in motor cars during summer than in winter
A star is moving away from the Earth with speed $V$. Change in wavelength $(d\lambda)$ observed on Earth is
$_6C^{14}$ and $7_N^{15}$ are examples of
If the Earth shrinks in its size (radius) mass remaining the same, the value of g on its surface will
Distance between two point charges is increased by 20%. Force of interaction between the charges
A $CE$ amplifier has current gain 50. Load resistance is $4 \, k\Omega$ and input resistance is $500 \, \Omega . 10 \, m V \, AC$ signal is applied. Peak value of output signal is
A calcite crystal is placed over a dot on a paper sheet and the crystal is rotated. On viewing through the calcite one sees
90 dB sound is x times more intense than 40 dB sound, then x is
The square of the resultant of two equal forces acting at a point is equal to three times their product. Angle between them is
Two rods of same area of cross section and lengths, and conductivities $K_1$ and $K_2$ are connected in series. Then, in steady state conductivity of the combination is
A stone dropped from the top of a tower reaches ground in 4 s. Height of the tower is $(g = 10 \, m/s^2)$
In a resonance pipe the first and second resonances are obtained at depths $ 22.7 \,cm $ and $ 70.2\, cm $ respectively. What will be the end correction ?
Adipic acid is used in the preparation of
Photochemical phase of photosynthesis occurs in
Which is not part of glomerular ultrafiltrate ?
Diploid structure found in embryo sac is
A particle performing $ SHM $ has time period $ \frac{2\pi}{\sqrt3} $ and path length $ 4\, cm $ . The displacement from mean position at which acceleration is equal to velocity is
A point on $XOZ$ plane divides the join of $(5,-3,-2)$ and $ (1,2,-2)$ on
$ 0.1\, M $ solution of which of the following has almost unity degree of dissociation ?
The maximum value of $ z = 9x + 13y $ subject to $ 2x + 3y \le 18, 2x + y \le 10, x \ge 0, y \ge 0 $ is
If the electron in a hydrogen atom jumps from an orbit with level $n_{1} =2$ to an orbit with level $n_{2} =1$ the emitted radiation has a wavelength given by
Ethyl butyrate has the flavour of which fruit ?