In vulcanization, natural rubber is heated with 1 Carbon 2 Sulphur 3 Silicon 4 Phosphorus

2 Answers  

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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

1 Answers  

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The gas that usually causes explosions in coal mines is 1 Hydrogen 2 Carbon monoxide 3 Air 4 Methane

8 Answers   BCECE, UPSC,

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Isotopes are separated by 1 Filtration 2 Sublimation 3 Distillation 4 Crystallization

10 Answers   Bank Exams, dpdc, MPSC, NIFT, State Bank Of India SBI,

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The recent atomic weight scale is based on 1 1H1 2 1H2 3 6C12 4 8O16

1 Answers  

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WHATE COLOUR OF STAR;SIZE;

0 Answers  

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Which of the following gases is lighter than air? 1 Carbon dioxide 2 Oxygen 3 Ammonia 4 Chlorine

5 Answers  

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1.how many bones are there in our human body? 2.who invented the aeroplane? 3.the full form for h2o is water 4.the name which is heavier is gold 5.name the symtom which is to cure for night blindness?

2 Answers  

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atoms are composed of Electrons & Protons or Electrons & Protons ?

3 Answers  

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Heavy water is 1 Tritium oxide 2 Deuterium oxide 3 Rain water 4 None of these

2 Answers  

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When was the second and third experimental explosion conducted?

0 Answers  

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Explain any four values that can be developed through teaching Physical Science

0 Answers   Mahatma Gandhi University,

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