Chemistry Which of the following could be used as fuel in propellant or rockets ? Liquid Hydrogen + Liquid Oxygen Liquid Hydrogen + Liquid Nitrogen Liquid Oxygen + Liquid Argon Liquid Nitrogen + Liquid Oxygen Liquid Hydrogen + Liquid Oxygen Liquid Hydrogen + Liquid Nitrogen Liquid Oxygen + Liquid Argon Liquid Nitrogen + Liquid Oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following metals is used to galvanise iron ? Lead Copper Mercury Zinc Lead Copper Mercury Zinc ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following laser types is used in a laser printer? Semiconductor laser Dye laser Gas laser Excimer laser Semiconductor laser Dye laser Gas laser Excimer laser ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ultraviolet rays can be used in water treatment as Disinfectant Hydrolyser Precipitator Flocculator Disinfectant Hydrolyser Precipitator Flocculator ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following causes the rusting of iron? a. Oxidation b. Reduction c. Chemical reaction with oxygend. Chemical reaction with CO2 B and c C and d A and c A and b B and c C and d A and c A and b ANSWER DOWNLOAD EXAMIANS APP
Chemistry In the periodic table of elements, on moving from left to right across a period, the atomic radius Remains unchanged Does not follow a definite pattern Decreases Increases Remains unchanged Does not follow a definite pattern Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
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