List of top Chemistry Questions asked in MHT CET

Identify ‘A’ in the following reaction: \[ R-\text{NO}_2 \xrightarrow{\text{Zn}/\text{NH}_4\text{Cl}, \text{neutral medium}} A + \text{H}_2\text{O} \]

Which of the following is Rosenmund reduction?

Which among the following elements is a soft element as compared to others?

In the reaction: \[ N_2 (g) + 3H_2 (g) \rightarrow 2NH_3 (g) \] The rate of disappearance of H\(_2\) is 0.02 M/s. The rate of appearance of NH\(_3\) is:

Identify the polymer obtained by heating n moles of isobutylene with n moles of isoprene at 100°C in the presence of anhydrous AlCl\(_3\).

Enthalpy of fusion and enthalpy of vaporization for water respectively are 6.01 kJ mol\(^{-1}\) and 45.07 kJ mol\(^{-1}\) at 0°C. What is enthalpy of sublimation at 0°C?

In resonance hybrid of ozone molecule, O-O bond length is

The P-P-P bond angle in white phosphorus is

Which of the following statement is NOT correct about solution?

Which of the following changes will cause an increase in vapor pressure of 1 molal aqueous KI solution at the same temperature?

Methoxy ethane on reaction with hot concentrated HI gives

Which of the following oxyacid of sulfur contains S=S linkage?

Which of the following is a character of catalyst?

Identify the decreasing order of boiling point of alkanes (i) n-pentane (ii) Isopentane (iii) Neopentane

Which among the following compounds is treated with benzonitrile to obtain benzophenone in dry ether and then acid hydrolysis?

An element crystallizes in bcc type of unit cell having atomic radius \( 1.33 \times 10^{-8} \) cm, the edge length of unit cell will be

For the following reaction, the relation between \( \Delta H \) and \( \Delta U \) is
\[ \text{2SO}_3(\text{g}) + \text{O}_2(\text{g}) \rightarrow \text{2SO}_3(\text{g}) \]

Which among the following group -15 elements forms hydrogen bonding in its hydride compounds?

Identify product ‘A’ in the following reaction.
\[ \text{R - C} \equiv \text{N} \xrightarrow{\text{DIBAL-H}} \xrightarrow{\text{H}_3\text{O}^+} A \]

What is the number of moles and total number of atoms respectively present in 5.6 cm\(^3\) of ammonia gas at STP?

In aqueous phase the order of basic strength of alkylamine is

Which polymer is obtained from monomers 3-Hydroxy butanoic acid and 3-Hydroxy pentanoic acid?

An element crystallizes in bcc type of unit cell, the density and edge length of unit cell is 4 g cm\(^{-3}\) and 500 pm respectively. What is the atomic mass of an element?

0.5 molal aqueous solution of a weak acid (HX) is 20% ionised. If Kf of water is 1.86 K kg mol⁻¹, the lowering in freezing point of solution is

In an isothermal and reversible process, \(1.6 \times 10^{-2}\) kg O\(_2\) expands from 10 dm\(^3\) to 100 dm\(^3\) at 300 K, work done in the process is (R = 8.314 J/mol·K)