Of the following metals which, one pollutes the air of a big city? 1 Copper 2 Chromium 3 Lead 4 Cadmium

3 Answers   HCL, High Court, SSC,

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Potassium permanganate is used for purifying drinking water, because 1 It is dissolves the impurities of water 2 It is a sterilizing agent 3 It is an oxidizing agent 4 It is a reducing agent

3 Answers  

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What is one light hour?

0 Answers  

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Which is india’s largest nuclear research reactor?

0 Answers  

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Study of life in outer space is called A) Endobiology B) Exobiology C) Entrobiology D) Neobiology

15 Answers   Exobiology, SSC,

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NO OF PLANT IN ONGC

0 Answers   ONGC,

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Explain the Evolution of Science as a discipline in the Medieval Period

0 Answers   Mahatma Gandhi University,

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What are cosmic rays?

0 Answers  

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A mixture of water and alcohol can be separated by 1 Filtration 2 Evaporation 3 Distillation 4 Decantation

4 Answers   SSC,

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A mixture of iron filings and sand can be separated by 1 Heating 2 Sublimation 3 Hand picking 4 Magnetic separation

1 Answers  

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Optic fibers are mainly used for which of the following? 1 Communication 2 Weaving 3 Musical instruments 4 Eye surgery

1 Answers  

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Deep blue color is imparted to glass by the presence of 1 Iron oxide 2 Cupric oxide 3 Nickel oxide 4 Cobalt oxide

2 Answers  

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