Chemistry Which gas is most stable at room temperature H2 F2 O2 N2 H2 F2 O2 N2 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 A and b A and c B and c C and d A and b A and c B and c C and d ANSWER DOWNLOAD EXAMIANS APP
Chemistry In the periodic table of elements, on moving from left to right across a period, the atomic radius Increases Remains unchanged Does not follow a definite pattern Decreases Increases Remains unchanged Does not follow a definite pattern Decreases ANSWER DOWNLOAD EXAMIANS APP
Chemistry Hydrogen is not found in atmosphere because It immediately combines with oxygen to form water It is the lightest gas It is highly inflammable It is absorbed by plants It immediately combines with oxygen to form water It is the lightest gas It is highly inflammable It is absorbed by plants ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights, electric shavers, etc. ? Nickel and cadmium Zinc and carbon Lead peroxide and lead Iron and cadmium Nickel and cadmium Zinc and carbon Lead peroxide and lead Iron and cadmium ANSWER DOWNLOAD EXAMIANS APP
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