List of practice Questions

A thin stainless steel needle can lay floating on a still water surface. Any object floats when the buoyancy force balances the weight of the object.
Animals giving birth to young ones are
Largest bird is
Reptile living both on land and water is
Whale is member of class
Canal system occurs in
Embryo sac represents
Retrogressive metamorphosis occurs in
Hydra reproduces a sexually through
An infolding in bacteria of cell membrane is
Cell organelle connecting cell membrane with nuclear envelope is
Acceleration due to gravity at earth's surface is $g \,ms ^{-2}$. Find the effective value of gravity at a height of $32\, km$ from sea level $:\left(R_{e}=6400 \,km \right)$
Near earths surface, time period of a satellite is $4 h$. Find its time period at height $4R$ from the centre of earth :
A body of mass $0.1\, kg$ attains a velocity of $ 10\,ms^{-1}$ in $0.1 \,s.$ The force acting on the body is :
If force $\vec{ F }= 5 \hat{ i }+3 \hat{ j }+4 \hat{ k }$ makes a displacement of $\vec{ s }=6 \hat{ i }-5 \hat{ k }$, work done by the force is :
A body is moving in a circular path with acceleration $a$. If its velocity gets doubled, find the ratio of acceleration after and before the change :
A ball is thrown from height $h$ and another from $ 2h $ The ratio of time taken by the two balls to reach ground is:
A ball is thrown upwards, it takes $4 s$ to reach back to the ground. Find its initial velocity :
Total volume of atoms present in a face-centred cubic unit cell of a metal is (r is atomic radius):
According to Bohr?? theory, the angular momentum of an electron in 5th orbit is :
Among the following L-serine is
Which vitamin is necessary for blood clotting
$300\, J$ of work is done in sliding a $2 kg$ block up an inclined plane of height $10 \,m$. Taking $g=10\, m / s ^{2}$, work done against friction is :
Interference was observed in an interference chamber when air was present. Now, the chamber is evacuated and if the same light is used, a careful observation will show:
According to Bohr?? theory, the angular momentum of an electron in 5th orbit is :