The ore of which of the following metals can be concentrated
by hydraulic washing?
1 Tin
2 Sodium
3 Iron
4 Manganese
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Which of the following is the best conductor of electricity? 1 Zinc 2 Copper 3 Gold 4 Silver
what are the advantages of interrupt and exception?
Which variety of glass is heat resistant? 1 Hard glass 2 Flint glass 3 Pyrex glass 4 Bottle glass
The major constituents of Portland cement include 1 Lime, silica and iron oxide 2 Lime, silica and magnesia 3 Silica, alumina and magnesia 4 Lime, silica and alumina
What is condensation? 1 Change of gas into solid 2 Change of solid into liquid 3 Change of vapour into liquid 4 Change of heat energy into cooling energy
Science as a social endeavor .Explain
0 Answers Mahatma Gandhi University,
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Quartz crystals normally used in quartz clocks etc. is chemically 1 Sodium silicate 2 Germanium oxide 3 Silicon dioxide 4 None of these
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Diamond is harder than graphite because of 1 Difference of layers of atoms 2 Tetrahedral structure of diamond 3 Difference of crystalline structures 4 None of these
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