Correct answer
B. Remote recording of pressure difference
Explanation
The correct answer is Remote recording of pressure difference.
Lead exhausted in the atmosphere by automobiles using leaded petrol (i.e. tetraethyl lead for improving octane number) is a lethal air pollutant which causes________?
True vapour pressure of a petroleum fraction ________ Reid vapour pressure?
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?
Thoria is an expensive refractory material and is radioactive in nature. Thorium oxide is used in the manufacture of________?
As the reflux ratio, in a continuous counter-current extraction is increased, the number of stages________?
Crystallisation of polymers is an undesirable property. Crystallisation of celluloid is prevented by adding________?