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Copper and Zinc.

Write the chemical formula for epsom salts?

1091

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How is hardness of water caused?

1135

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What is blank solution?

1092

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What is the metal used to extract copper from the solution of copper sulphate?

1082

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How many electrons does benzene have?

1038

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What is the min constitutes of haematite ore?

1092

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How many millilitre is equal to 1 litre and how many microliter is equal to litre?

1104

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Why is estimation of copper done at 620 nm wave length?

1441

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Why titration in which hcl and h2so4 is use?

1076

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Why ph scale range is 14?

1110

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what is the relation between Total organic carbon and Chemical Oxygen demand?

2926

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What is the reaction that occurring between fas and potassium dichromate?

1286

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What is density of a liquid?

1155

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How are pka and strength of a weak acid related?

1045

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What is the prime constituents of cement?

1268

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