Q. Marsh gas is ?
Q. LPG consists of mainly ?
? Methane, Butane and Propane
Q. Balloons are filled with ?
Q. Which of the following does not contain a coinage metal ?
? Zinc and Gold
Q. Which metal pollute the air of a big city ?
Q. Which of the following is not an isotope of hydrogen ?
Q. Which of the following is the lightest metal ?
Q. Which of the following metals remain in liquid for under normal conditions ?
Q. Potassium Permanganate is used for purifying drinking water, because ?
? It is an oxidising agent
Q. Which of the following is an element ?