List of practice Questions

What is the end product in the following reaction? $ {{C}_{2}}{{H}_{5}}N{{H}_{2}}\xrightarrow{HN{{O}_{2}}}A\xrightarrow{PC{{l}_{5}}}B\xrightarrow{N{{H}_{3}}}C $

What is obtained, when aniline is sulphonated?

Vinyl chloride reacts with $ HCl $ to form:

Two point charges + 3 $ \mu C $ and + 8 $ \mu C $ repel each other with a force of 40 N. If a charge of - 5 $ \mu C $ is added to each of them, then the force between them will become:

The dominant mechanisms for motion of charge carriers in forward and reverse biased silicon $ \text{p-n} $ junctions are:

The compound that is not a Lewis acid, is

The co-ordination number of bcc crystal is:

Night blindness is caused by the deficiency of:

Gynobasic style is found in:

Glenoid cavity is present in:

Eustele is present in:

Cartilage is produced by:

$ C{{H}_{3}}C{{H}_{2}}COOH\xrightarrow[Fe]{C{{l}_{2}}}X\xrightarrow{alc.\,KOH}Y, $ the compound $ Y $ is:

Butyne-1 and butyne-2 can be distinguished by:

Which of the following plants keep its stomata open during the night and closed during the day?

At constant volume, temperature is increased. Then:

As a result of osmosis, the volume of concentrate solution:

An obligate parasite is one which:

The eccentricity of the conic $3x^2 + 4y^2 = 24$ is

For a hollow cylinder and a solid cylinder rolling without slipping on an inclined plane, then which of these reaches earlier

A (100 W, 200V) bulb is connected to a to V power supply. The power consumption would be:

12. If the binding energy per nucleon in $ L{{i}^{7}} $ and $ H{{e}^{4}} $ nuclei are respectively 5.60 MeV and 7.06 MeV, then energy of reaction $ L{{i}^{7}}+p\xrightarrow{{}}2\,{{\,}_{2}}H{{e}^{4}} $ is:

In a double slit experiment instead of taking slits of equal widths, one slit is made twice as wide as the other, then in the interference pattern

Which set has the same number of unpaired electrons in their ground state?

Lead pipes are not suitable for drinking water because: