Question Bank Directory

4.74 g of an inorganic compound contains 0.39 g of K, 0.27 g of Al, 1.92 g of $SO_4$ radicals and 2.16 g of water. If molar mass of the compound is $948 \text{ g mol}^{-1}$, the molecular formula of the inorganic compound is:

Which of the following statements is incorrect?

Choose the compound which has a maximum bond angle at nitrogen among the following:

The volume occupied by one water molecule (density = $1 \text{ g cm}^{-3}$) is:

An isostructural compound with $XeF_2$ among the following is:

Incorrect statement among the following about zeolites is:

The percentages of C, H, and N in an organic compound are 40%, 13.3%, and 46.7% respectively. The empirical formula of the compound is:

What fraction of Fe exists as Fe(III) in $Fe_{0.96}O$? (Consider $Fe_{0.96}$ to be made up of Fe(II) and Fe(III) only)

Which of the compounds given below will exhibit a linear structure?

The volume of $CO_2$ obtained by the complete decomposition of $9.85\text{ g}$ of $BaCO_3$ is:

If $1 \text{ gram}$ of sodium hydroxide was treated with $25 \text{ mL}$ of $0.75 \text{ M}$ HCl solution, the mass of sodium hydroxide left unreacted is equal to:

Suppose that the elements $X$ and $Y$ combine to form two compounds $XY_2$ and $X_3Y_2$. If $0.1 \text{ mole}$ of $XY_2$ weighs $10 \text{ g}$ and $0.05 \text{ mole}$ of $X_3Y_2$ weighs $9 \text{ g}$, the atomic weight of $X$ and $Y$, respectively, will be:

Which of the two ions from the list given below have the geometry that is explained by the same hybridisation of orbitals, $NO_2^-$, $NO_3^-$, $NH_2^-$, $NH_4^+$, $SCN^-$?

$20.0\text{ g}$ of a magnesium carbonate sample decomposes on heating to give carbon dioxide and $8.0\text{ g}$ magnesium oxide. What will be the percentage purity of magnesium carbonate in the sample? (Atomic weight of Mg = 24)

The maximum number of water molecules among the following is:

A diatomic molecule, among the following species, that only has $\pi$ bonds according to the Molecular Orbital Theory (MOT) is:

$25.3\text{ g}$ of Sodium carbonate $\text{Na}_2\text{CO}_3$ is dissolved in enough water to make $250\text{ mL}$ of solution. If sodium carbonate dissociates completely, molar concentration of sodium ion, $\text{Na}^+$ and carbonate ion $\text{CO}_3^{2-}$ are respectively (Molar mass of $\text{Na}_2\text{CO}_3 = 106\text{ g mol}^{-1}$)

One mole of carbon atom weighs $12 \text{ g}$, the number of atoms in it is equal to: (Mass of carbon-12 is $1.9926 \times 10^{-23} \text{ g}$)

The correct order of electronegativity of hybrid orbitals of carbon is:

A mixture of $2.3 \text{ g}$ formic acid and $4.5 \text{ g}$ oxalic acid is treated with conc. $\text{H}_2\text{SO}_4$. The evolved gaseous mixture is passed through $\text{KOH}$ pellets. Weight (in g) of the remaining product at STP will be: