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How the soluble salts are recovered from water?

asked Sep 17, 2017 in Chemistry by shamroz (41.5k points)

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Why use of detergents is increasing day by day?

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

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Show that motion of a simple pendulum is SHM.

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

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Name the salts which are formed when Zn metal reacts with following acids.

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

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Write down the names of four fractions obtained by the fractional distillation of residual oil.

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

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Write a detailed note on functional groups of alkenes and alkynes. How they are identified from other compounds?

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

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How slag and matte are removed from the blast furnace?

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

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Why butane undergoes substitution reactions?

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

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How the temperature of atmosphere is maintained?

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

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Why a small amount of coke is required in the smelting process?

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

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You are in a need of an acidic salt. How can you prepare it?

asked Sep 17, 2017 in Chemistry by shamroz (41.5k points)

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Both, alkenes and alkynes are unsaturated hydrocarbons. State the one most significant difference between them.

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

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Justify that alkanes give substitution reactions.

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

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Define a base and explain: all alkalis are bases, but all bases are not alkalis.

asked Sep 17, 2017 in Chemistry by sonia (36.5k points)

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Explain the oxidation of acetylene.

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

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Why the ten amino acids are essential for us?

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

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1 answer 551 views

Explain the phenomenon of decreasing temperature in troposphere.

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

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Which petroleum fraction is used in dry cleaning?

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

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What do you mean by the extent of reaction?

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

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State and explain the neutralization reaction according to Lewis concept.

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

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