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PERIODIC CLASSIFICATION OF ELEMENTS
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SURA PUBLICATION-PERIODIC CLASSIFICATION OF ELEMENTS -ADDITIONAL QUESTIONS & ANSWERS ( VERY SHORT ANSWERS )
- Explain the action of dil. HNO3 with copper .
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- Write the ores of Iron with its chemical formula.
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- Name the process . Ore heated in the absence of air .
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- Name the process . Ore heated in the presence of excess of air .
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- Explain the action of heat on Iron .
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- Write the uses of Pig iron .
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- Iron when dipped in conc. HNO3 becomes chemically inert . Give reason...
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- Write any three uses of copper.
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- What is Cast iron ?
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- What is an alloy ?
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- What is an amalgam ?
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- How are alloys made ?
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- What is Duralumin ? Give its uses .
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- Name any two alloys of copper and Give its uses .
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- Write the uses of nickel steel.
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- Define corrosion .
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- What is galvanization ?
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- Explain the classification of alloys based on iron content .
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- What is electroplating ?
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- What is Sacrificial metal ?
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