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