If the pH value of a solution changes by one unit, it implies that hydrogen ion concentration in the solution will change __________ times. September 7, 2025 by Admin 10 20 70 100 ✅ The correct answer is option A.
The unit of specific heat at constant pressure, Cp, in SI unit is September 7, 2025 by Admin W/m²°C J/kg°K W/m°K J/m³°K ✅ The correct answer is option B.
For estimation of heat capacity of a solid compound, one can use September 7, 2025 by Admin Clayperon’s equation Gibb’s equation Kopp’s rule Trouton’s rule ✅ The correct answer is option C.
Which of the following is not used for computing latent heat of vaporisation? September 7, 2025 by Admin Clausius-Clayperon equation Reference substance plots based on Durhing & Othmer plots Kistyakowasky’s equation Hess ✅ The correct answer is option D.
The density of a gas ‘X’ is twice that of another gas ‘Y’. If the molecular weight of gas ‘Y’ is ‘M’; then the molecular weight of the gas ‘X’ will be September 7, 2025 by Admin 2M M/2 M M/4 ✅ The correct answer is option A.
The temperature of a gas in a closed container is 27° C. If the temperature of the gas is incresed to 300° C, then the pressure exerted is September 7, 2025 by Admin Doubled Halved Trebled Unpredictable ✅ The correct answer is option D.
In case of a ternery system involving two liquid components and a solute, the ratio of the concentration of the solute in the two phases at equilibrium is called the distribution co-efficient. The distribution co-efficient depends upon the September 7, 2025 by Admin Solute concentration Temperature Both A & B Neither A nor B ✅ The correct answer is option C.
The combustion equations of carbon and carbon monoxide are as follows: C + O₂ = CO₂, ΔH = – 394 kJ/kg . mole CO + 1/2 O₂ = CO₂, ΔH = – 284.5 kJ/kg. mole. The heat of formation of CO is __________ kJ/kg. mole. September 7, 2025 by Admin -109.5 109.5 180 100 ✅ The correct answer is option A.
At what temperature, given mass of a gas that occupies a volume of 2 litres at N.T.P. will occupy a volume of 4 litres, if the pressure of the gas is kept constant? September 7, 2025 by Admin 273°C 273°K 100°C 200°C ✅ The correct answer is option A.
If pH value of a solution is 8, then its pOH value will be September 7, 2025 by Admin 6 1 7 10 ✅ The correct answer is option A.