List of practice Questions

If plane surface of a piano convex lens is silvered, then it will behave as a

The relationship between Young's modulus $Y$, bulk modulus $K$ and modulus of rigidity $\eta$ is

A closed iron ring is held horizontally and a bar magnet is dropped through the ring with its length along the axis of the ring. The acceleration of the falling magnet is

Longitudinal wave can travel in

The number of $\alpha$-particles and $\beta$-particles respectively emitted in the reaction $ {_{88}A^{196} -> _{78}B^{164}}$

$\left(^{8}C_{1} - ^{8}C_{2} + ^{8}C_{3} -^{8}C_{4} + ^{8}C_{5} - ^{8}C_{6} +^{8}C_{7} - ^{8}C_{8}\right) $ equals:

A projectile is projected with speed $49\,ms^{-1}$ at an angle of $30^{\circ}$ with horizontal. The time taken by the projectile to reach the highest point is

Real gas behaves as an ideal gas, under which of the following conditions ?

The electrical conductivity of a semiconductor increases when electromagnetic radiation of wave length shorter than $2480\, nm$ is incident on it. The band gap (in $eV$) for semiconductor is

The potential difference across the collector of a transistor, used in common emitter mode is $1.5\, V$, with the collector resistance of $3\, k\Omega$, the emitter current is $[\beta = 50]$

8.2 L of an ideal gas weighs 9.0 g at 300 K and 1 atm. pressure. The molecular mass of gas is

Cyclosis or cytoplasmic streaming was discovered by

Particle present over 60S ribosome subunit which helps it to attach to surface of E.R. is

With janus Green, mitochondria turn

Cell wall layer lacking cellulose and containing xylans is

Cellulose of cell wall is synthesised by synthetase enzyme located over

Pili occur in

Tubule of endoplasmic reticulum present inside a plasmodesma is

Bacterial inclusions are generally covered by

Prochromosome is

Teichoic acids function as

7.5 grams of a gas occupy 5.6 litres of volume at STP. The gas is (Atomic weights of C, N and O are 12, 14 and 16 respectively)

6 coins are tossed together 64 times. If throwing a head is considered as a success then the expected frequency of at least 3 successes is

Function of mitochondria is

Net gain of ATP in prokaryotes from a molecule of glucose when oxidize is of glucose when oxidized is