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Write the molecular, dot and cross and structural formula of ethyne.

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How is tetrabromoethane prepared from acetylene?

asked Sep 20, 2017 in Chemistry by sonia (36.5k points)

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What are carbohydrates? How monosaccharide’s at prepared? Give their characteristics.

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What role is played by pine oil in the concentration process?

asked Sep 26, 2017 in Chemistry by shamroz (41.5k points)

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How sulphur containing compounds are emitted naturally?

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Write a note on fractional distillation of petroleum.

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How crude oil is refined? Explain the important fractions of petroleum along with their usage.

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How decaying plants consume oxygen?

asked Sep 24, 2017 in Chemistry by sonia (36.5k points)

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How many water of crystallizations are present in CuSO4.5H2O and CaSO4.2H2O?

asked Sep 16, 2017 in Chemistry by sonia (36.5k points)

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Distinguish between propane and propene with a chemical test

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Alkanes are a source of heat. Explain it.

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Give the reaction of formation of ammonia in the process.

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Why a salt is neutral, explain with an example?

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What are the components of nucleotide?

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How pesticides cause water pollution?

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Give an example of a disaccharide. How it is hydrolyzed into monosaccharide’s?

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Define chemical equilibrium state.

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What do you mean by fluorosis?

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Why water molecule is polar?

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What are the disadvantages of fat soluble vitamins?

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