34) When two resistances are connected in series and in parallel, the resistance were 7 ohm and 12/7 ohm respectively? What are the individual resistances?

35) The solder used in soldering process is an alloy of

36) When 3 capacitors of capacities 2 mfd, 4 mfd and 4 mfd are connected in series, the effective capacity is

37) The color of the Freon-22 cylinder is

38) 2 atmosphere is equal to _____ PSIG.