MAH-MHT CET (PCM/PCB) entrance exam Question Bank Solutions

Gas equation, pV = nRT is obeyed by a gas in ______.

The solubility product (K_sp) of solid barium sulphate at 298 K is 1.1 × 10^-10. The molar solubility, S of \[\ce{Ba^{2+} and [SO^{2-}_4]}\] are ______.

Which of the following can reduce?

\[\ce{RCOOH -> RCH2OH}\]

Choose the correct option.

Ethers are kept in air tight brown bottles because ______________.

Mole is the SI unit of ____________.

Isothermally and reversibly one mole of neon expands from 2 m³ to 20 m³ and produces 831.4 J of work. The temperature at which expansion takes place is ____________.
(R = 8.314 J K^-1 mol^-1)

Select the INCORRECT statement.

The dissociation constant of a weak base (BOH) is 1.8 × 10⁻⁵. Its degree of dissociation in 0.001 M solution is ____________.

At T (K), the molar ionic conductivities of NH; and OH⁻ at infinite dilution are 72 and 198 S cm² mol⁻¹ respectively. The molar conductivity of 0.01 M NH₄OH solution at the same temperature is found to be 9 S cm² mol⁻¹. The percentage dissociation of NH₄OH at this concentration is ____________.

Identify the INCORRECT match.

When 2 moles of C₂H_6(g) are completely burnt, 3129 kJ of heat is liberated. If ∆H_f for CO_2(g) and H₂O_(l) are −395 and −286 kJ per mole respectively, the heat combustion of C₂H_6(g) is ____________.

A compound that has a high negative heat of formation is normally ____________.

According to Bohr's theory, an electron can move only in those orbits for which its angular momentum is integral multiple of ____________.

The volume of oxygen required for complete combustion of 0.25 mole of methane at STP is ______.

Which of the following molecule does not contain oxygen?

When 6.0 g of graphite reacts with dihydrogen to give methane gas, 37.4 kJ of heat is liberated. What is standard enthalpy of formation of CH₄ (g)?

An ideal gas expands isothermally and reversibly from 10 m³ to 20 m³ at 300 K, performing 5.187 kJ of work on surrounding, calculate number of moles of gas used.

It a centimolal aqueous solution of K₃[Fe(CN)₆] has degree of dissociation 0.78. What is the value of van't Hoff factor?

The heat of formations of CO_(g) and CO_2(g) are −26.4 kcal and −94.0 kcal respectively. The heat of combustion of carbon monoxide will be ____________.

The standard heats of formation for CCl_4(g), H₂O_(g), CO_2(g), and HCl_(g) are −25.5, −57.8, −94.1 and −22.1 kcal mol⁻¹, respectively.

∆H for the reaction

\[\ce{CCl4_{(g)} + 2H2O_{(g)} -> CO2_{(g)} + 4HCl_{(g)}}\] at 298 K