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MODERN PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-EXERCISE
- What is flux ? How is it useful ?
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- True of False : Copper is found both in free as well as in combined st...
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- True of False : All minerals are ores put all ores cannot be minerals.
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- True of False : The minerals siderite, magnetite and haematite contain...
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- True of False : Flux combines with slag to form gangue.
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- True of False : In calcination, the ore is heated with calcium.
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- True of False : Silver is extracted by by hydrometallurgy.
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- Zone refining is used for the
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- True of False : The metals Ag, Au and Hg are extracted by pyrometallur...
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- Chromium steel is the mixture of-
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- Which of the following reagents can be used to convert acetamide into ...
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- Complete the missing links : The earthly and silicious impurities whic...
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- The most abundant element in the earth's crust is:
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- Purest form of iron is
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- State whether the statement is true or false- Lunar caustic is the com...
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- Zirconium is best refined by ......... method.
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- In blast furnace, iron oxide is reduced by
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- Nichrome metal alloy is a mixture of-
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- The naturally occurring chemical substances in the form of which metal...
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- Copper can be extracted from
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- Fill in the blanks- alloy is made up of 14% of manganese and 85% of ir...
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