List of top Chemistry Questions on Mole concept and Molar Masses asked in CUET (UG)

Calculate the molality of KI if the density of 20% (mass/mass) aqueous solution of KI is (1)202 g mL$^{-1}$.
(Molar mass of KI is 166 g mol$^{-1}$)

Match List-I with List-II \[ \begin{array}{|l|l|l|} \hline \textbf{List-I} & \textbf{List-II} & \textbf{Matches} \\ \hline (A) \; \text{Cell constant} & (I) \; \text{cm}^{-1} & (A) - (I) \\ \hline (B) \; \text{Molar conductance} & (II) \; \Omega^{-1}\,\text{cm}^2\,\text{mol}^{-1} & (B) - (II) \\ \hline (C) \; \text{Specific conductance} & (III) \; \Omega^{-1}\,\text{cm}^{-1} & (C) - (III) \\ \hline (D) \; \text{Conductance} & (IV) \; \Omega^{-1} & (D) - (IV) \\ \hline \end{array} \]

The carbohydrate used as a storage molecule in plants is

The following solutions were prepared by dissolving 1 g of solute in 1 L of the solution. Arrange the following solutions in decreasing order of their molarity: (A) Glucose (molar mass = 180 g mol$^{-1}$)
(B) NaOH (molar mass = 40 g mol$^{-1}$)
(C) NaCl (molar mass = 58.5 g mol$^{-1}$)
(D) KCl (molar mass = 7(4)5 g mol$^{-1}$)

Calculate the mass of urea \((NH_2CONH_2)\) required in making 2.5 kg of 0.25 molal aqueous solution.

An element with molar mass \(2.7 \times 10^{-2}\) kg/mol forms a cubic unit cell of edge length 405pm. If the density is \(2.7 \times 10^3\) kg/\(m^3\). The nature of the cell is?

Degree of dissociation, when molar conductivity of X at its concentration C is 24.14 and its limiting molar conductivity is 48.28 will be

The value of Avogardro's Number is ______

Which of the following is more reliable?