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Write classification of coal.

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1 answer 147 views

How is coal formed? What are the different types of coal?

asked Sep 19, 2017 in Chemistry by sonia (36.5k points)

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Why the alkanes are called 'paraffin's'?

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Define petroleum

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Which gases are present in LPG?

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What are the effectors In nervous coordination?

asked Sep 4, 2017 in Biology by shamroz (41.5k points)

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Write the formula of oxalic acid

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Both, alkenes and alkynes are unsaturated hydrocarbons.

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Define structural formula. Draw the structural formulae of n-butane and isobutene.

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Describe the types of joints and give examples.

asked Sep 15, 2017 in Biology by shamroz (41.5k points)

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Give the structure of following compounds isopentane, and isobutene

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1 answer 91 views

Why the alkynes are called acetylenes?

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

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What is coke? For what purpose it is used? Which is the best quality of coal?

asked Sep 19, 2017 in Chemistry by sonia (36.5k points)

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Write down the characteristics of homologous series.

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What are heterocyclic compounds? Give two examples.

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2 answers 303 views

What is marijuana? To which category of addictive drugs, it belongs?

asked Sep 14, 2017 in Biology by sonia (36.5k points)

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1 answer 131 views

What is the functional group of an ester?

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CNG stands for

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Differentiate between aldehyde and ketone functional groups. How both are identified from each other?

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Which is the simplest alkane?

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