JEE Main - Chemistry Mock Tests

Which of the following compounds gives BOTH a positive Tollens test and a positive iodoform test? (A) CH₃CHO (B) CH₃COCH₃ (C) C₆H₅CHO (D) CH₃CH(OH)CH₃:

The pH of 0.001 M HCl solution is:

A solution containing 3.6 g of a non-volatile solute in 120 g of water freezes at –0.93°C. The molar mass of the solute is: (Kf of water = 1.86 K kg mol⁻¹)

The rate constant of a reaction at 300 K is 2.5 × 10⁻⁵ s⁻¹ and at 320 K it is 1.0 × 10⁻⁴ s⁻¹. The activation energy of the reaction is approximately:

The correct order of electron gain enthalpy (more negative first) for halogens is:

Which of the following carbocations is most stable?

Which of the following will decrease the solubility of AgCl in water?

One mole of a real gas described by the van der Waals equation undergoes a reversible isothermal expansion from volume V₁ to V₂ at temperature T. The work done by the gas is: