Which of the following is chiefly present in LPG (Liquefied Petroleum Gas)?
1). Methane
2). Ethane
3). Propane
4). Butane
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2. The advantage of detergents over soaps is
3. The acid used in lead storage cells is
4. Stalactites and Stalagmites form due to the precipitation of :
5. Species containing same number of electrons are called:
6. The gas that is used in the manufacture of vanaspati ghee is :
7. The anode in a dry cell consists of