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Yogita Ingle 5 years, 3 months ago
As a boy mandela free in every way he could freely run to the feilds and swim in the stream .As long as he obeyed the law of his parents he was not troubled but he learnt that this freedom was illusion As a student he wanted freedom himself .He wanted freedom to stay out at might when he yearned basic and honourable freedom of avheiving his potential he felt that he was not free his freedom was curtailed
Posted by Anshuman Omm 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
Let us assume that 5 -√3 is rational. Then it can be written in the form
5 - √3 = p/q
or 5 - p/q = √ 3
It implies √3 is a rational number [Since 5 - p/q are rationals
But this contradicts the fact that √3 is irrational. Hence our supposition was wrong. Therefore 5 -√ 3 is irrational.
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Yogita Ingle 5 years, 3 months ago
Cinnabar also known as HgS is termed as the mercury ore.
Mercury can be obtained from cinnabar by heating the cinnabar ore in a current of air and condensing the mercury vapour formed. Due to its relatively low boiling point mercury can be easily purified by vacuum distillation. The reaction of mercury sulphide with oxygen is shown below:
HgS + O2 → Hg + SO2
This process is also called Roasting. However Mercury can be obtained from other reactions too. For ex:
HgS + Fe → Hg + FeS
4HgS + 3 CaO → 4Hg + 3CaS + CaSO4
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Vaishnavi Kanojia 5 years, 3 months ago
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Gaurav Seth 5 years, 3 months ago
(1) In a modern state a centralised power exercised sovereign control over a clearly defined territory. It had been developing over a long period of time in Europe. (2) A nation state was one in which the majority of its citizens and not only its rulers, came to develop a sense of common identity and shared history or descent. (3) This commonness was forged through struggles, through the actions of the leaders and the common people and did not exist from time immemorial.
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Posted by Priya ✧*。٩(๑˙╰╯˙๑)و✧*。 5 years, 3 months ago
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Priya ✧*。٩(๑˙╰╯˙๑)و✧*。 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
The reaction in which oxygen combines with other elements or compounds is known as an oxidation reaction. For example, burning of hydrogen is an oxidation process in which hydrogen combines with oxygen to form water.
2H2(g) + O2 (g) → 2H2O
Oxidation reactions are exothermic.
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Bhagya Sudarsan 5 years, 3 months ago
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