Answer Posted / naresh

Parts per million is ppm. preparation is same above

Which wavelengths are visible to human eye?

1210

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What are the constituents of cements?

1042

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What is the role of stannous chloride?

1361

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Why be is not soluble in liquid ammonia?

1086

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Why are the titration involving edta carried out slowly towards the end point?

1176

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Define what is oxidation and reduction reaction?

1047

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Write the equation of photosynthesis?

1101

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Differentiate between organic and inorganic chemistry?

996

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What is the unit of ph?

1002

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What is the role of mercuric sulphate?

1057

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What is si unit of viscosity-coefficient?

1101

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What is weak acid?

938

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Write the chemical formula for epsom salts?

1067

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What are the products formed after cod analysis?

1302

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What is the monomer of polyethene?

1140

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