List of practice Questions

The breaking stress of a wire of length $ l $ and radius r is $ 5\,\,kg\,\,wt/{{m}^{2}} $ . The wire of length $ 2l $ and radius 2r of the same material will have breaking stress in $ (kwt/{{m}^{2}}) $ :

The alloy of copper, which does not contain zinc is:

Ratio of radius of atom to that of nucleus is of the order of:

If the over bridge is concave instead of being convex. The thrust on the road at the highest position will be :

Heavy water is obtained:

Each of the numerous tiny apertures on the body of sponge is known as:

Conversion of n-hexane to benzene, in the presence of chromic acid, is called:

AT NTP the rms velocity of hydrogen molecules is 1.8 km/s. Under the same conditions the rms velocity of oxygen molecules in km/s will be:

Octonucleated cyst stage is found in:

Protozoan living in the seminal vesicles of earthworm is:

Human eye lens is:

The tadpole resembles fish most during this stage:

Which one of the following is a genetic disease?

Birds like eagle and hawk in a grassland ecosystem are regarded as:

The gene for haemophilia is known to be located on:

The portal system seen in all vertebrates is:

Anastral mitosis is the characteristic of:

The equivalent weight of Mohrs salt is:

The value of $ I{{E}_{1}},\,I{{E}_{2}},\,I{{E}_{3}},\,I{{E}_{4}} $ and $ I{{E}_{5}} $ of an element are 7.1, 14.3, 34.5, 46.8 and 162.2 eV respectively. The element is likely to be:

To what radioactive family does $ P{{b}^{207}} $ belongs?

When the same amount of Al is treated with an excess of $ HCl $ and $ NaOH $ , the volumes of hydrogen evolved are in the ratio of:

The element with the highest first ionization potential is:

Which of the following has the smallest size?

Which of the following is not true? An element, with high electronegativity is, generally:

Ortho and para hydrogen: