Hot questions

0 like 0 dislike

1 answer 150 views

What is principle of fractional distillation?

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

0 like 0 dislike

1 answer 362 views

Alkanes are a source of heat. Explain it.

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

0 like 0 dislike

1 answer 275 views

Differentiate between primary and secondary air pollutants.

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

0 like 0 dislike

1 answer 274 views

What is the characteristics of stratosphere?

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

0 like 0 dislike

1 answer 369 views

How is tetrabromoethane prepared from acetylene?

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

0 like 0 dislike

1 answer 143 views

Define the law of mass action.

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

0 like 0 dislike

1 answer 143 views

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

asked Sep 26, 2017 in Chemistry by sonia (36.5k points)

0 like 0 dislike

1 answer 188 views

Which salts are responsible for hardness of water?

asked Sep 24, 2017 in Chemistry by shamroz (41.5k points)

0 like 0 dislike

1 answer 573 views

Which types of salts produce SO2 gas on reacting with acids?

asked Sep 16, 2017 in Chemistry by shamroz (41.5k points)

0 like 0 dislike

1 answer 277 views

Explain the sources and uses of lipids.

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

0 like 0 dislike

1 answer 269 views

CO2 is necessary for plants but why its increasing concentration is alarming for us?

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

0 like 0 dislike

1 answer 186 views

How water used as a cleaning agent in industries causes pollution?

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

0 like 0 dislike

1 answer 139 views

Mention the chemical reaction for the formation of metallic copper in the bessemerization process.

asked Sep 25, 2017 in Chemistry by sonia (36.5k points)

0 like 0 dislike

1 answer 135 views

How petroleum is extracted?

asked Sep 25, 2017 in Chemistry by shamroz (41.5k points)

0 like 0 dislike

1 answer 345 views

Prepare the following as directed.

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

0 like 0 dislike

1 answer 256 views

Write down the significance of atmospheric gases.

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

0 like 0 dislike

1 answer 173 views

Why water molecule is polar?

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

0 like 0 dislike

1 answer 129 views

How many stages are involved in formation of urea?

asked Sep 25, 2017 in Chemistry by shamroz (41.5k points)

0 like 0 dislike

1 answer 303 views

Lactose is a disaccharide; which monosaccharide’s are present in it?

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

0 like 0 dislike

1 answer 261 views

Why COs is called a greenhouse gas?

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

Categories