List of practice Questions

The oxidation number of sulphur in $Na_2S_4O_6$ is

The magnetic needle of a tangent galvanometer is deflected at an angle $30^{\circ}$ due to a magnet. The horizontal component of earth's magnetic field $0.34$ $\times 10^{-4} T$ is along the plane of the coil. The magnetic intensity is

The immediate energy source of muscle contraction:

The highest oxidation state shown by Mn is:

The cranial capacity was largest among the

The coefficient of mutual inductance, when magnetic flux changes by $2 \times 10^{-2} Wb$ and current changes by $0.01 A$ is

The breaking stress of a wire depends upon

A second pendulum is kept in a satellite it is revolving around the earth at the height of $3\,R$ from the earth surface. Time period of second pendulum will be:

Dynamo which produces electricity, is a application of:

Air cored choke coil and delectric bulb are connected in series with $A.C$. mains. A soft iron rod is inserted in coil then the intensity of electric bulb will be :

The orbital speed of a satellite revolving nearby the earth is:

Which of the following is proportional to energy density m magnetic field $B$:

Which one of the following is ferro magnetic?

Sometimes positive charged particle comes from space towards earth with high velocity. Its deviation due to the magnetic field of earth will be:

Source of energy in an ecosystem is

$ SN^1$ reaction is feasible in :

Scent sprayer is based on

Root described adventitious root because

Root hair absorbed water from the soil on account of

Ribosomes are produced in :-

Racemic mixture is formed by mixing two :

Pseudocoelom is the characteristic of

Pulp cavity of teeth is lined by

Prokaryotic genetic system has

Plant grow in dry & saline soil is called