List of top Chemistry Questions

The conjugate acid of $ \text{N}_{3}^{-} $ (Azide ion) is :

When ethyne is passed through dilute $ {{H}_{2}}S{{O}_{4}} $ containing $ {{H}_{g}}S{{O}_{4}}, $ it forms:

The specific conductance of a $N / 10 \,KCl$ at $25^{\circ} C$ is $0.0112\, ohm ^{-1} cm ^{-1} .$ The resistance of cell containing solution at the same temperature was found to be $55\, ohm$. The cell constant will be

The alum used for purifying water is

The oxyacid of phosphorus in which phosphorushas the lowest oxidation state is

For the chemical reaction,$3 X ( g) + Y ( g) \rightleftharpoons \, X_3 \, Y $ ( g) the amount of $X_3 Y$ at equilibrium is affected by

Which of the following metals is present in brass, bronze and german-silver?

The solubility of a saturated solution of calcium fluoride is $2 \times 10^{-4}$ moles per litre. Its solubility product is

The specific heat of a metal is $0.16.$ Its approximate atomic weight would be

Solder is an alloy of:

In the dichromate dianion

Principal, azimuthal and magnetic quantum numbers are respectively related to

The radii of $F , F ^{-}, O$ and $O ^{-2}$ are in the order of

Which of the following is the sweetest sugar?

The correct statement regarding defects in solids is

Which is the purest form of iron?

In the depression of freezing point experiment, it is found that the

Which of the following is a colligative property ?

Which of the following is a colligative property?

The equivalent weight of phosphoric acid $\left( H _{3} PO _{4}\right)$ in the reaction: $NaOH + H _{3} PO _{4} \rightarrow NaH _{2} PO _{4}+ H _{2} O$ is

The size of colloidal particle is

The following statement (s) is are correct

The empirical formula of a compound is $CH_2O$. Its molecular weight is $180$. The molecular formula of the compound is

Beilstein test is used for the detection of

A buffer solution can be prepared from a mixture of