List of practice Questions

Filtration of the blood takes place at

Renal calculi are

The term taxon was introduced by ICBN in

Amount of CO expelled by lungs per hour is

Atrial nutriuretic factor

Diluting segment of nephron is

Sudden oliguria or anuria is

In ammonotelic fish, ammonia mostly passes out of the body through

Renal medula is

Renin is secreted by

Starfish is

A cylindrical lens is required to correct

A cylindrical vessel contains a liquid of density $\rho$ upto a height h. The liquid is closed by a piston of mass m and area of cross section A. There is a small hole at the bottom of the vessel. The speed with which the liquid comes out of the vessel is

A cylindrical vessel of height $500\, mm$ has an orifice (small hole) at its bottom. The orifice is initially closed and water is filled in it upto height $H$. Now the top is completely sealed with a cap and the orifice at the bottom is opened. Some water comes out from the orifice and the water level in the vessel becomes steady with height of water column being $200\, mm$. The fall in height (in mm) of water level due to opening of the orifice is [Take atmospheric pressure $= 1.0 \times10^{5} N/m^{2}$, density of water $= 1000\, kg/m^{3}$ and $g = 10 m/s^{2}$. Neglect any effect of surface tension.]

A dealer wishes to purchase a number of fans and sewing machines. He has only $?\, 5760$ to invest and has space for at most $20$ items. A fan and sewing machine cost $?\, 360$ and $? \,240$ respectively. He can sell a fan at a profit of $?\,22$ and sewing machine at a profit of $? \,18$. Assuming that he can sell whatever he buys, how many fans and sewing machines respectively he sell in order to maximize his profit?

A cyclist moving on a circular track of radius $40\, m$ completes half a revolution in $40 \,s$. Its average velocity is

A cyclotron can be used to produce high energy :

A current of 9.65 ampere flowing for 10 minutes deposits 3.0 g of the metal which is monovalent. The atomic mass of the metal is

A cyclist is riding with a speed of $27\,km\, h^{-1}$. As he approaches a circular turn on the road of radius $80 \,m$, he applies brakes and reduces his speed at the constant rate of $0.50\,m s^{-1}$ every second. The net acceleration of the cyclist on the circular turn is

A current carrying coil is placed in an uniform magnetic field, with its plane parallel to the magnetic field. If the coil turns through angle $\theta$, the torque $\tau$ and $\theta$ are related as :

A current carrying loop of radius r carries a current I. It is placed in a magnetic field $B_0$ such that the plane of the coil is perpendicular to the magnetic field. The net force on the coil is

A cubical vessel of height 1 m is full of water. What is the amount of work done in pumping water out of the vessel? $(Take g = 10 ms^{-2})$

A current carrying circular loop of radius $R$ is placed in the $x - y$ plane with centre at the origin. Half of the loop with $x > 0$ is now bent so that it now lies in the $y - z$ plane

A cricketer can throw a ball to a maximum horizontal distance of $100\,m$. With the same speed how much high above the ground can the cricketer throw the same ball?

A crowbar of length 120 cm has its fulcrum situated at a distance of 20cm from the load. The mechanical advantage of the crow bar is