The heat of neutralisation remains constant, when there is a reaction between dilute solutions of strong _____________________?

Related Mcqs:

1. The efficiency of a Carnot heat engine operating between absolute temperatures T1 and T2 (when, T1 > T2) is given by (T1 – T2)/T1. The co-efficient of performance (CO.P.) of a Carnot heat pump operating between T1 and T2 is given by_________________?

   A. T1/(T1-T2)
   B. T2/(T1-T2)
   C. T1/T2
   D. T2/T1

2. ______________________ temperature remains constant during adiabatic saturation process of unsaturated air ?

   A. Dew point
   B. Dry bulb
   C. Wet bulb
   D. None of these

3. If a solid is compressed adiabatically in its elastic range, its _____________ remains constant ?

   A. Internal energy
   B. Enthalpy
   C. Entropy
   D. Temperature

4. The activity co-efficient of the solute in a dilute solution ?

   A. Decreases with the increase of concentration of the solute
   B. Increases with the increase of concentration of the solute
   C. Remains constant
   D. Is unity at infinite dilution

5. The amount of different substances produced, when the same quantity of electricity is passed through different solutions are proportional to their__________________?

   A. Equivalent weight
   B. (Equivalent weight)2
   C. Molecular weight
   D. (Molecular weight)2

6. Two solutions A1 & A2 have pH value of 2 & 6 respectively. It implies that the solution ?

   A. A1 is more alkaline than solution A2
   B. A1 is highly acidic
   C. A2 is very slightly acidic
   D. Both B. & C.

7. Baffles provided on the shell side of a shell and tube heat exchanger are meant for _____________________?

   A. Providing support for the tubes
   B. Improving heat transfer
   C. Both A & B
   D. Preventing the fouling of tubes & stagnation of shell side fluid

8. A thin, flat & square plate measuring 2 m × 2 m is freely hanging in ambient air at 25°C. It is exposed to the solar radiation falling on one side of the plate at the rate of 500 W/m2. The plate temperature will remain constant at 30°C, if the convective heat transfer co-efficient is ________________ W/m2 °C ?

   A. 50
   B. 100
   C. 150
   D. 200

9. For the irreversible reaction, Ca+ 2C = Ca C2 , Δ H°298 = – 60000 J . mole-1 . If a system initially containing 2 moles of calcium, 3 moles of carbon and 1 mole of calcium carbide is allowed to react to completion, the heat evolved at 298 K will be__________________?

   A. 30,000 J
   B. 60,000 J
   C. 90,000 J
   D. 2,40,000 J

10. When the wet steam is throttled but still remains wet at the exit of the throttle valve, then its temperature & dryness fraction respectively____________________?

    A. Decreases & increases
    B. Increases & increases
    C. Increases & decreases
    D. Decreases & decreases