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Ozone attacks 1 Mercury and silver 2 Copper 3 Silver and iron 4 None of these
Among the various allogropes of carbon 1 Diamond is the hardest, lamp black is the softest 2 Diamond is the hardest, coke is the softest 3 Coke is the hardest, graphite is the softest 4 Diamond is the hardest, graphite is the softest
why our head's weight not feel our body?
What is the Embrylogy ?
Which of the following is not a neutral oxide? 1 Carbon monoxide 2 Sulphur dioxide 3 Nitric oxide 4 Water
What are nebulae?
define cartography?
Which of the following materials are used for preparing blur-black ink? 1 Gallic acid 2 Tannic acid 3 Ferrous sulphate 4 All of these
WHAT IS THE FUNCTION OF NIKEL IN CHEMICAL REACTION
which of the following fibers is generally preferred for making gauze and lint? 1 Cotton 2 Rayon 3 Nylon 4 Terylene
Who was the first cosmonaut?
Which of the following alloys is used for making magnets? 1 Duralumin 2 Stainless steel 3 Alnico 4 Magnalium