what is the force that helping the earth to revolve by its own.

2 Answers  

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Which of the following alloys is used for making magnets? 1 Duralumin 2 Stainless steel 3 Alnico 4 Magnalium

1 Answers  

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The element found on the surface of the moon is 1 Tin 2 Tungsten 3 Tantalum 4 Titanium

4 Answers   RRB,

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Heavy water is 1 Sea water (H2O+Salt) 2 D2O 3 H2O2 4 None of these

3 Answers  

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Cooking oil can be converted into vegetables ghee by the process of 1 Oxidation 2 Hydrogenation 3 Distillation 4 Crystallization

4 Answers   SSC, TAPL,

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Which of the following metals can displace zinc from a solution of zinc sulphate? 1 Lead 2 Magnesium 3 Iron 4 Mercury

2 Answers  

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The Contact Process is involved in the manufacture of 1 Nitric acid 2 Sulphuric acid 3 Ammonia 4 Caustic soda

2 Answers  

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Which of the following is used as a coolant in nuclear reactors? 1 Heavy water 2 Cadmium 3 Liquid sodium 4 None of these

2 Answers   WBCS West Bengal Civil Service,

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0.005M K2Cr2O7 solution for calibration of UV.why 0.005M K2Cr2O7?

1 Answers  

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What is practical frequency. ? How create a frequency band?

0 Answers   Student,

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Which of the following is the lightest gas? 1 Nitrogen 2 Hydrogen 3 Ammonia 4 Carbon dioxide

4 Answers  

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Which of the following metals react with nitrogen at room temperature to form nitride? 1 Sodium 2 Potassium 3 Magnesium 4 None of these

3 Answers  

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