List of top Chemistry Questions

The electronic configuration of neon is

The night-blindness is developed due to shortage of which vitamin?

The conductivity of $0.20 \,M\, K C l$ solution at $298\, K$ is $0.0248\, S\, cm ^{-1}$. What will be its molar conductivity?

The concentration of hydronium ions in a cup of black coffee is $1.3 \times 10^{-5} M$. What will be the $pH$ of the coffee?

The concentration of $ A{{g}^{+}} $ ion in a given saturated solution of $ AgCl $ at $ 25{}^\circ C $ is $ 1.06\times {{10}^{-5}}g- $ ion per litre. Thus, the solubility product of $ AgCl $ is

Which one is the correct representation of $ NH_{4}^{+} $ ion?

The $ P-P-P $ bond angle in white phosphorus is

The fertilizer named Nitrolim is prepared by the use of

Carborundum is the name of

Which of the following is present in tenon?

The chemical which is known as the king of chemicals is

Soda ash is

Structurally a biodegradable detergent should contain a

Solubility product of silver bromide is $5.0 \times 10^{-13}$. The quantity of potassium bromide (molar mass taken as 120 g of $mol^{-1}$) to be added to 1 litre of 0.05 M solution of silver nitrate to start the precipitation of AgBr is

Select the incorrect statement.

Sea water is converted into fresh water based on the phenomenon of

Pure benzene freezes at $5.3^{\circ} C$. A solution of $0.223 \,g$ of phenylacetic acid $(C_6H_5CH_2COOH)$ in $4.4\, g$ of benzene $(h_f = 5.12\,kg\,mol^{-1})$ freezes at $4.47^{\circ} C$. From this observation, one can conclude that

Primary, secondary and tertiary amines can be distinguished by

Pressure versus temperature graph of an ideal gas is as shown in figure. Density of the gas at point $A$ is $\rho_{0}$. Density at point $B$ will be

Permanent hardness of water can be removed by adding

Percentage of free space in cubic close packed structure and in body centred packed structure are respectively

Passing $H _{2} S$ gas through nitric acid produces

Oxidation number of $N$ is $ HN{{O}_{3}} $ is

Oxalic acid on heating with conc. $ H_2SO_4$ gives

Non-zero dipole moment is shown by