PPSC Assistant Junior Clerk Solved MCQs Past Papers 26. It is observed that the total pressure exerted by air on the man of average siz is around 14.7 lb wt. per square inch. But the man feels quite comfortable,. It is because of : a) An equal and opposite pressure acts from inside b) of … Read more
Important Scientific Instruments • Hydrometer measures humidity • Barometer measures atmospheric pressure • Purity of milk is measured by lactometer • Fathometer measures the depth of oceans. • Sextant is used for measuring altitude of Sun and other heavenly bodies • Chronometer records accurate time on ships • Algesimeter indicates the degree of sensitiveness of … Read more
Important Unit of Measurements • 1 horse power is 745.7 watts • 1 horse power = work equal to lifting 550 lbs of weight to one foot for one second • 1 calorie is equal to 4.2 Joules • 1 barrel is equal to 159 liters • 6 feet = 1 fathom • 1 kwh … Read more
Definitions of Various important branches of Science • Taxidermy means stuffing dead animals • Stenography means short hand writing • Psoriasis is a learning disability • Paleontology is study of fossils. • Hematology is the study of blood. • Study of earth is geology • Acoustics is the science of sound • Cytology is the … Read more
Important Vitamins Questions with Answers • Deficiency of vitamin A causes dryness of skin and night blindness • Skin food is Vitamin C • Vitamin C is also called Ascorbic Acid it prevents scurvy • Vitamin C is also necessary for utilization of iron • The food which contains largest amount of Vitamin C is … Read more