Chemistry - 1 — MH-CET Full Length Paper MCQs with Solutions

Which type of crystal defect decreases the density of an ionic crystalline solid?

The boiling point elevation constant ($K_b$) of water is $0.52\text{ K}\cdot\text{kg}\cdot\text{mol}^{-1}$. The boiling point elevation of a $0.1\text{ m}$ aqueous solution of urea is:

A buffer solution contains $0.1\text{ M}$ acetic acid and $0.1\text{ M}$ sodium acetate. Given $pK_a$ of $\text{CH}_3\text{COOH} = 4.74$, the pH of the resulting buffer solution is:

The SI unit of the rate constant ($k$) for a second-order chemical reaction is:

The steady decrease in ionic radii across the lanthanoid series ($\text{La}^{3+}$ to $\text{Lu}^{3+}$) is caused by:

An alkyl halide reacts with alcoholic potassium hydroxide ($\text{alc. KOH}$) to form an alkene via:

The decreasing order of reactivity of alkyl halides towards bimolecular nucleophilic substitution ($\text{S}_\text{N}2$) is:

Heating sodium phenoxide with carbon dioxide gas at $400\text{ K}$ under $4$--$7\text{ atm}$ pressure followed by acidification yields salicylic acid. This reaction is:

Benzaldehyde on treatment with concentrated $50\%$ aqueous sodium hydroxide yields benzyl alcohol and sodium benzoate. This reaction is known as:

Reduction of cyclohexanone with zinc amalgam ($\text{Zn-Hg}$) and concentrated $\text{HCl}$ to cyclohexane is known as:

The reaction of an aliphatic carboxylic acid with chlorine gas in the presence of red phosphorus to give an $\alpha$-chloro acid is:

Which of the following carbohydrates is a non-reducing sugar?

The helical structure of a protein is maintained and stabilized primarily by:

Which nitrogenous base is present exclusively in RNA but absent in DNA?

Nylon-6,6 is a synthetic polymer prepared by the polycondensation of:

Bakelite is formed through the cross-linking polymerisation of:

Natural rubber is chemically classified as a linear polymer of:

Which of the following is an example of a biodegradable polyester polymer?

According to the principles of green chemistry, atom economy (%) is maximized when:

The number of moles of water molecules present in $180\text{ g}$ of pure water is:

The maximum number of electrons that can be accommodated in a subshell with azimuthal quantum number $l = 2$ is:

The oxidation number of chromium in potassium dichromate ($\text{K}_2\text{Cr}_2\text{O}_7$) is:

According to Graham's law, the ratio of the rates of diffusion of methane ($\text{CH}_4$, $M = 16$) and sulfur dioxide ($\text{SO}_2$, $M = 64$) under identical conditions is:

Which of the following complexes is diamagnetic and forms a low-spin inner-orbital complex?

According to IUPAC nomenclature, the coordination complex $[\text{Pt}(\text{NH}_3)_2\text{Cl}(\text{NO}_2)]$ is named as:

The packing efficiency of a face-centred cubic (fcc) unit cell is approximately:

The Henry's law constant ($K_H$) for a gas in water at $298\text{ K}$ is $1.6 \times 10^{-5}\text{ mol}\cdot\text{L}^{-1}\cdot\text{bar}^{-1}$. If the partial pressure of the gas above the solution is $2.5\text{ bar}$, its solubility is:

The osmotic pressure of a $0.02\text{ M}$ solution of an electrolyte $\text{AB}_2$ ($i = 2.6$) at $300\text{ K}$ is ($R = 0.0821\text{ L}\cdot\text{atm}\cdot\text{mol}^{-1}\cdot\text{K}^{-1}$):

The solubility product ($K_{sp}$) of a sparingly soluble salt $\text{Ag}_2\text{CrO}_4$ in terms of its molar solubility $S$ is expressed as:

For the isothermal and reversible expansion of 2 moles of an ideal gas from $10\text{ L}$ to $100\text{ L}$ at $300\text{ K}$, the work done is ($R = 8.314\text{ J}\cdot\text{K}^{-1}\cdot\text{mol}^{-1}$, $\ln 10 = 2.303$):