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Which metal is used for Galvanisation of iron?
Which one is having more weight when compare to diesel to petrole?
Epoxy resins are used as 1 Moth repellants 2 Insecticides 3 Detergents 4 Adhesives
The first synthetic fiber made by man was 1 Rayon 2 Nylon 3 Polyester 4 Terycott
A moderator is used in nuclear reactors in order to 1 Increase the number of neutrons 2 Decrease the number of neutrons 3 Slow down the speed of neutrons 4 Accelerate the neutrons
why is it important that sex cells have half the number of Chromosomes as body cells?
Carbon tetrachloride fire extinguisher should not be used in closed rooms, because it produces a poisonous gas called 1 Carbon monoxide 2 Phosphine 3 Phosgene 4 None of these
Which synthetic fiber possesses a ‘drip-dry’ property? 1 Rayon 2 Nylon 3 Silk 4 Terylene
Water is a compound because 1 It exists as a solid, a liquid or a gas 2 It contains hydrogen and oxygen 3 It contains two different elements joined by chemical bonds 4 It cannot be split up into simpler substances by chemical means
it is not advisable to sleep under a tree at night becouse trees release
When was the first american rocket launched?