List of practice Questions

Who invented the cyclotron?

Which is correctly matched?

A hollow conducting sphere is placed in an electric field produced by a point charg placed at $P$ as shown in figure. Let $V_A, V_B, V_C$ be the potentials at points $A, B$ and $C$ respectively. Then

In intrinsic semiconductor at room temperature number of electrons and holes are

Which logic gate does the following truth table represent?

A sequential expression of set of human gene occurs when steroid molecule binds to the

The, following molecule has a linear shape

The equation of a simple harmonic wave is given by $y=3 \sin \frac{\pi}{2}(50t-x), $ where $x$ and $y$ are in metres and $t$ is in seconds. The ratio of maximum particle velocity to the wave velocity is

Potato spindle tuber disease is caused by

What is $DDT$ among the following :

Two cars started moving with initial velocities $v$ and $2v$. For the same deceleration, their respective stopping distances are in the ratio

Tollen�s reagent and Fehling solutions are used to distinguish between

To speed up the malting process in brewing industry the growth hormone used is

To cool the car engines in radiators, water is used because it is having

Third and fourth ventricles of the brain are connected by

The weight $W$ of a certain stock of fish is given by $W= nw,$ where n is the size of stock and w is the average weight of a fish. If $n$ and $w$ change with time $t$ as $n=2t^{2}+3$ and $w=t^{2}-t+2,$ then the rate of change of $W$ with respect to $t$ at $t = 1$ is

The velocity of certain ions that pass undeflected through crossed electric field $E = 7.7 k\, V/m$ and magnetic field $B = 0.14\, T$ is

The two organisms which breathe only through their moist skin are

The total number of ways in which $5$ balls of different colours can be distributed among $3$ persons so that each person gets at least one ball is

The total number of biodiversity hotspots in the world are

The term �biosystematics� was coined by

The stages between larval moults in an insects are called

The $SI$ unit of intensity of wave is

The radius of gyration of body depends upon