List of practice Questions

A satellite of mass $ m_{s} $ is moving in an orbit of radius $R$, then its angular momentum:
True relation for triode valve is:
The ratio of escape velocity and orbital velocity of satellite revolving near the earth:
When a load of $5 \,kg$ is hung on a wire then extension of $3$ metre takes place, then work done will be:
The relation between time period $(T)$ of a body and radius of circular orbit $(r)$ is:
A steel wire of $1\, m$ long and $1\, mm^2$ cross section area is hanged from rigid end when weight of $1 \,kg$ is hung from it then change in length will be (for wire Youngs coefficient $ Y=2\times 10^{11}\,N/m^{2} $ ):
Contact angle of kerosen oil with solid surface is:
Baking soda or baking powder is
If a convex lens is kept in water its convergent power decreases. Focal length of convex lens in water increases.
$H _{3} PO _{3}$ is dibasic acid. Two hydrogen atoms are directly attached to the P.
Danger signals are made of red colour. Velocity of red light is maximum and thus more visibility in dark.
Amphibians have evolved from fishes. Take the example of the fossil Archaeopteryx.
Apical dominance can be overcome by application of
Transition metals mostly are
The halogen that is most easily reduced is
Zinc and mercury do not show variable valency like d-block elements because
Elements which generally exhibit multiple oxidation states and whose ions are usually coloured are
According to the postulates of Werner for coordination compounds
On reduction of $KMnO_4$ by oxalic acid in acidic the oxidation number of Mn changes.What is the magnitude of this change ?
Which of the following is not a sex hormone ?
In polysaccharides, the linkage connecting monosaccharide is called
About how many nephrons are there in each kidney of a human:
A uniform but time-varying magnetic field B(t) exists in a circular region of radius a and is directed into the plane of the paper as shown. The magnitude of the induced electric field at point P at a distance r from the centre of the circular region
For x $ \in $ R, $ lim_{ x \to \infty} \bigg( \frac{x - 3}{ x + 2}\bigg)^x $ is equal to
Which of the following ribosomes are engaged in protein synthesis in animal cell?