Metals and Non-metals
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283

Name two metals which resist corrosion due to the formation of a thin, hard and impervious...
By Jaiyush19, 4 years ago
replies 1
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355

What is an alloy? How is an alloy made? (b) What elements are present in steel? How are th...
By Jaiyush19, 4 years ago
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336

What is meant by ‘rusting of iron’? With the help of labelled diagrams, describe an activi...
By Jaiyush19, 4 years ago
replies 1
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1
309

What is corrosion? (b) Name any two metals which do not corrode easily. (c) What is the co...
By Jaiyush19, 4 years ago
replies 1
0
1
394

Explain how, a reduction reaction of aluminium can be used for welding cracked machine par...
By Jaiyush19, 4 years ago
replies 1
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154

Define the terms (i) mineral (ii) ore, and (iii) gangue. (b) What is meant by the ‘concent...
By Jaiyush19, 4 years ago
replies 1
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161

What is meant by refining of a metal? Name the most widely used method for the refining of...
By Jaiyush19, 4 years ago
replies 1
0
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373

How are the less reactive metals (which are quite low in the reactivity series) extracted?...
By Jaiyush19, 4 years ago
replies 1
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247

Describe with one example, how moderately reactive metals (which are in the middle of reac...
By Jaiyush19, 4 years ago
replies 1
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127

Explain giving one example, how highly reactive metals (which are high up in the reactivit...
By Jaiyush19, 4 years ago
replies 1
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