Hot questions

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Identify as primary or, secondary air pollutant, SO2, CH4, HNO3, NH3, H2SO4 O3.

asked Sep 22, 2017 in Chemistry by shamroz (41.5k points)

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1 answer 925 views

Differentiate between osmoregulation and thermoregulation.

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

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1 answer 183 views

Give the characteristics of monosaccharide

asked Sep 21, 2017 in Chemistry by sonia (36.5k points)

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Why the alkynes are called acetylenes?

asked Sep 21, 2017 in Chemistry by sonia (36.5k points)

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1 answer 133 views

How ozone layer forms in stratosphere?

asked Sep 23, 2017 in Chemistry by shamroz (41.5k points)

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1 answer 140 views

Explain the sources and uses of proteins.

asked Sep 22, 2017 in Chemistry by sonia (36.5k points)

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1 answer 139 views

What are polysaccharides? Give their properties.

asked Sep 22, 2017 in Chemistry by sonia (36.5k points)

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1 answer 179 views

What are causes of cancer?

asked Sep 21, 2017 in Chemistry by shamroz (41.5k points)

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1 answer 178 views

Why the ten amino acids are essential for us?

asked Sep 21, 2017 in Chemistry by sonia (36.5k points)

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1 answer 136 views

How acid rain is produced?

asked Sep 22, 2017 in Chemistry by shamroz (41.5k points)

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1 answer 137 views

Where the proteins are found?

asked Sep 22, 2017 in Chemistry by shamroz (41.5k points)

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1 answer 127 views

Where ozone layer is found?

asked Sep 23, 2017 in Chemistry by sonia (36.5k points)

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1 answer 126 views

Oxides of nitrogen cause air pollution. Describe the sources of these compounds.

asked Sep 23, 2017 in Chemistry by shamroz (41.5k points)

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1 answer 132 views

Explain amino acids are building blocks of proteins?

asked Sep 22, 2017 in Chemistry by sonia (36.5k points)

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What do you mean by ozone hole?

asked Sep 23, 2017 in Chemistry by sonia (36.5k points)

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1 answer 260 views

Write down the dot and cross formula of propane and n-butane?

asked Sep 19, 2017 in Chemistry by shamroz (41.5k points)

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1 answer 123 views

Why CO is considered a health hazard?

asked Sep 23, 2017 in Chemistry by shamroz (41.5k points)

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1 answer 123 views

How ozone layer is being depleted by Chlorofluocarbons?

asked Sep 23, 2017 in Chemistry by shamroz (41.5k points)

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1 answer 338 views

Is coal-tar a compound? What is importance of coal-tar?

asked Sep 18, 2017 in Chemistry by sonia (36.5k points)

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Where the ozone layer exists?

asked Sep 22, 2017 in Chemistry by sonia (36.5k points)

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