List of practice Questions

The exposure time of a camera lens at $ f/2.8 $ setting is $1/200$ s. The correct exposure time at $ f/5.6 $ setting is:

Reflex action is controlled by

Haemodialysis helps in patient having:

'Heart of heart' is:

Hydrogen bomb is based on the principle of :

Amia belongs to family

Transfusion tissue is found in:

The material used in warfare in making smoke screens for military purposes is:

Glucose has difference from fructose in that it

The X-ray cannot be diffracted by means of an ordinary grating due to

There are $26$ tuning forks arranged in the decreasing order of their frequencies. Each tuning fork gives $3$ beats with the next. The first one is octave of the last. What is the frequency of $18th$ tuning fork?

The Triticale is an intergeneric hybrid between:

The temperature-entropy diagram of a reversible engine cycle is given in the figure. Its efficiency is:

The compound used for the preparation of $UF_6$ in the enrichment of ${92}_U^{235}$ is

The liquid crystal method is applicable to locate avein in the body because

The highest electrical conductivity of the following aqueous solutions is of:

The hardest substance is:

The fundamental frequency of a sonometer wire is n. If its radius is doubled and its tension becomes half, the material of the wire remains same, the new fundamental frequency will be:

The functions of moderators in nuclear reactor is to:

The extraction of which of the following metals involves bessemerisation?

If suddenly the gravitational force of attraction between earth and a satellite revolving around it becomes zero, then the satellite will:

If in a circular coil A of radius R, current $ i $ is flowing and in another coil B of radius 2R a current $ 2i $ is flowing, then the ratio of the magnetic fields, $ {{B}_{A}} $ and $ {{B}_{B}} $ produced by them will be:

If two mirrors are kept at $ 60{}^\circ $ to each other, then the number of images formed by them is: