Zone refining is used for the purification of
Au
Ge
Ag
Cu
Additional Questions
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The main chemical constituent of the oil of cardamom which is responsible for flavour of this oil is |
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The molecule which has the highest percentage of ionic character among the following is |
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The high reactivity of fluorine is due to |
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The iron ore magnetite consists of |
Answer |
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The ionisation energy of hydrogen atom in the ground state is x KJ. The energy required for an electron to jump from 2nd orbit to 3rd orbit is |
Answer |
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The major constituent of air is |
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The main chemical constituent of clay is |
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The mineral containing both magnesium and calcium is |
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The metal does not give H2 on treatment with dilute HCL is |
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The number of g-molecule of oxygen in 6.02 x 1024CO molecules is |
Answer |