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14 × 1 + 6 = 20 20 × 2 - 5 = 35 35 × 3 + 4 = 109 109 × 4 - 3 = 433 433 × 5 + 2 = 2167
A polymeric substance used to make parachute is
The major constituent of air is
The noble gas used in radiotherapy is
Petroleum is a mixture of-
The nucleus of an atom consists of-
______is the process in which acids and bases react to form salts and water
An electric iron has a heating element made of:
One of the constituents of tear gas is
The gas usually causing explosions in coal mines is-
Alum stops bleeding in minor cuts because of