B. Derivative time
C. Error ratio
D. Differential gap
- Percentage of differential pressure lost in a Venturimeter with a tapering of 15° may be about___________________?
- A. 1 B. 10 C. 25 D. 50...
- Laser is a device to produce___________________?
- A. Gamma rays B. Microwaves C. A beam of white light D. A beam of coherent light...
- For separating small pieces of metal from engine oil of a car, the best separating technique is the _____________________ ?
- A. Chromatography B. Evaporation C. Filtration D. Fractional distillation...
- A common disinfectant used in village wells for disinfection of water is __________________?
- A. Free chlorine B. Bromine C. Iodine D. Potassium permanganate...