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ARIHANT PUBLICATION JHARKHAND-SOLVED PAPER 2019-SECTION II: CHEMISTRY
- Plaster of Paris (POP) is
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- The ability of metals to be drawn into thin wire is called .
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- ……….is most malleable metal.
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- ………. Is non - metal but it is lustrous .
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- ………….does not react with cold water .
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- Manganese react with very dilute HNO(3) to evolve ………gas.
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- The order of reactivity is
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- Cinnabar is
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- Sulphide ores are converted into oxides by
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- Fe(2)O(3) (S) + 2AI (s) to 2Fe(l) + AI(2)O(3)(s) + Heat . This react...
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- Silver articles become black after some time when exposed to air . ...
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- Bronze is an alloy of
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- ………..is an alloy used for welding electrical wires .
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- …………is a major componet of CNG .
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- For the hydrogenation of vegetable oils ……..is used as catalyst .
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- Dehydration of ethanol gives
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- ...... solution of acetic acid in water is called vinegar.
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- The melting point of pure ethanoic acid is
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- Esters react in the presence of acid or base to give alcohol and carb...
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- Properties of elements are periodic function of their
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