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The following solutions were prepared by dissolving 10 g of glucose ($C_6H_{12}O_6$) in 250 ml of water ($P_1$), 10 g of urea ($CH_4N_2O$) in 250 ml of water ($P_2$) and 10 g of sucrose ($C_{12}H_{22}O_{11}$) in 250 ml of water ($P_3$). The decreasing order of osmotic pressures of these solutions is:

During osmosis, the flow of water through a semi-permeable membrane is:

The ciliated epithelial cells are required to move particles or mucus in a specific direction. In humans, these cells are mainly present in

Lanthanoid's most common oxidation state is:

If the rate constant for a first order reaction is k, the time (t) required for the completion of 99% of the reaction is given by:

A solution of sucrose (molar mass = $342 \text{ g mol}^{-1}$) has been prepared by dissolving $68.5 \text{ g}$ of sucrose in $1000 \text{ g}$ of water. The freezing point of the solution obtained will be: ($K_f$ for water = $1.86 \text{ K kg mol}^{-1}$)

If 8 g of a non-electrolyte solute is dissolved in 114 g of n-octane to reduce its vapor pressure to 80%, the molar mass (in g mol⁻¹) of the solute is: [Molar mass of n-octane is 114 g mol⁻¹]

Given below are two statements: one is labeled as Assertion (A) and the other is labeled as Reason (R): Assertion (A): Helium is used to dilute oxygen in the diving apparatus. Reason (R): Helium has a high solubility in $O_2$. In light of the above statements, choose the correct answer from the options given below:

1% (w/w) solution of a compound is isotonic with 5% (w/w) sucrose (sugar) solution. The molecular weight of the compound will be:

Actinoids exhibit more number of oxidation states than lanthanoids. It is because of:

Which one of the following ions is the most stable in an aqueous solution? (At. No. Ti = 22, V = 23, Cr = 24, Mn = 25)

Which one of the elements with the following outer orbital configurations may exhibit the largest number of oxidation states?

Normality of a solution containing $9.8 \text{ g}$ of $\text{H}_2\text{SO}_4$ in $250 \text{ cm}^3$ of the solution is

The calculated spin only magnetic moment of $Cr^{2+}$ ion is:

In which of the following pairs are both the ions coloured in aqueous solution? (At. no : $\text{Sc} = 21$, $\text{Ti} = 22$, $\text{Ni} = 28$, $\text{Cu} = 29$, $\text{Co} = 27$)

More number of oxidation states are exhibited by the actinoids than by the lanthanoids. The main reason for this is:

A pair among the following have nearly the same atomic radii: (Numbers in the parenthesis are atomic numbers).

$0.5$ molal aqueous solution of a weak acid ($\text{HX}$) is $20\%$ ionised. If $K_f$ for water is $1.86 \text{ K kg mol}^{-1}$, the lowering in freezing point of the solution is:

The major product of the following reaction is: [Image of Phthalic acid reacting with NH3 under strong heating]

Which one of the following is wrongly matched?