List of top Chemistry Questions

Which one of the following can produce hydrogen when treated with metallic sodium?

The value of amu is which of the following?

When $ {{H}_{2}}S $ gas is passed in a metal sulphate solution in presence of $ N{{H}_{4}}OH $ , a white precipitate is produced. The metal is identified as:

The molecule having largest dipole moment among the following is:

$ CH_3COOH $ is weaker acid than $H_2SO_4$ . It is due to:

Water in liquid state is more stable than ice at room temperature. Water in liquid form has higher entropy than ice.

In the iodometric titration starch is used as an indicator. Starch is a polysaccharide.

Graphite is an example of tetragonal crystal system. For a tetragonal system, $a=b \neq c, \alpha=\beta$ $=90^{\circ}, \gamma=120^{\circ}$

Total volume of atoms present in a face-centred cubic unit cell of a metal is (r is atomic radius):

According to Bohr?? theory, the angular momentum of an electron in 5th orbit is :

Among the following L-serine is

According to Bohr?? theory, the angular momentum of an electron in 5th orbit is :

Which of the following is secondary pollutant?

Which of the following is the most basic oxide ?

In methane the bond angle is:

How many isomers are possible for the alkane $C_{4}H_{10}$ ?

Dipole moment is shown by:

Cyanide process is used for the extraction of

A sample of rock from moon contains equal number of atoms of uranium and lead. $t_{1 / 2}$ for $U =4.5 \times 10^{9}$ years. The age of the rock would be :

The action of enzymes in living system is to:

Which combinations of quantum numbers $n, l, m$ and $s$ for the electron in an atom does not provide a permissible solution of the wave equation?

Correct gas equation is:

$ Ca^{2+}$ is isoelectronic with:

Which of the following compounds is carborundum?

Which of the following molecules has pyramidal shape?