Which of the following thermocouples can measure the maximum temperature?

The rate expression for a heterogeneous catalytic reaction is given by, – rA = K.KA PA(1 + KA.PA + KR.PR), where K is surface reaction rate constant and KA and KR are absorption equilibrium constants of A and R respectively. If KR PR >> (1 + KA PA), the apparent activation energy EA is equal to (given E is the activation energy for the reaction and ΔHR and ΔHA are the activation energies of adsorption of R and A)?

The maximum thickness of the metal which can be welded using ultrasonic welding is ________ mm?

Pick out the undesirable property for a good refrigerant?

Ultracentrifuges running at speeds upto 100000 rpm is normally used for the________?

Fenske equation determines the ________?