Q. The mass of P₄O₁₀ that will be obtained from the reaction of 1.33 gram of P₄ and 5.07 of oxygen is

? 3.05 gram

Q. The metal that is used as a catalyst in the hydrogenation of oils is

? Ni

Q. The most abundant rare gas in the atmosphere is

? Ar

Q. The ore which is found in abundance in India is

? Monazite

Q. The inherited traits of an organism are controlled by

? DNA molecules

Q. What are the number of moles of CO2 which contains 16 g of oxygen ?

? 0.5 mole

Q. The monomer of polythene is

? Ethylene

Q. The most malleable metal is

? Gold

Q. The oil used in the froth floatation process is

? Pine oil

Q. The items amenable to detection by soft x-rays are

? Genuine coins from counterfeit coins

Q. The gas used in the manufacture of vanaspati from vegetable oil is

? Hydrogen

Q. The first metal used by man was

? Copper