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Answer:
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Explanation:
a) Calcining at different temperatures produces magnesium oxide of different reactivity.
b)Silver chloride is easily synthesized by combining aqueous solutions of silver nitrate and sodium chloride. It can also with cobalt(II) chloride. This precipitation is general for silver nitrate's reaction with soluble chloride salts and is not unique simply to cobalt.
c)Lead nitrate on heating decomposes to lead monoxide, nitrogen dioxide and oxygen. NO2 is liberated, along with oxygen, as a reddish brown gas. ... PbO is lead oxide,nitrogen dioxide[NO2] which appears as brown fumes and oxygen is produced.
d)Zinc chloride is the name of chemical compounds with the formula ZnCl2 and its hydrates. Zinc chlorides, of which nine crystalline forms are known, are colorless or white, and are highly soluble in water. ZnCl2 itself is hygroscopic and even deliquescent.
e)The Haber Process combines nitrogen from the air with hydrogen derived mainly from natural gas (methane) into ammonia.
Answer:
hey I am answering your social studies question and answers
E. Answer the following questions in one or two paragraph:
Question 1.
Explain how India has benefited from its location.
Answer:
The location of India has helped in the development of trade and commerce. The existence of seas on three sides has encouraged international trade. From ancient times, India has had political, economic and cultural links with other countries. Today, India provides a link between the East and the West world. Its central position between the two world has helped the development of its own industries and trade.
Question 2.
Explain how the Himalayas have greatly influenced the life of the people of India.
Answer:
The Himalayas exert a significant influence on the life of the people of India in several ways.
They form a natural boundary between India and China.
They serve as a climatic barrier by preventing the entry of the cold winds from Central Asia and preventing the rain¬bearing monsoon winds from leaving India.
They are a source of perennial rivers such as the Indus, the Ganga, and the Brahmaputra and their tributaries.
The mountain slopes are forested. These forests provide different types of timber and forest products.
The Himalayas have beautiful hill Stations Shimla, Darjeeling, Mussorie, etc.
Question 3.
Explain why the Great Northern Plains are densely populated.
Answer:
The Great Northern Plains are densely populated because of the following reasons
The fertile soil of the plains has helped in the development of agriculture.
Its soft soil has made irrigation possible.
Their flatness has promoted growth and development of a dense network of road and rail transport.
Their rivers and tributaries provide cheap water transport.
Question 4.
Describe the Andaman and Nicobar Islands, and the Lakshadweep Islands.
Answer:
There are two Island groups of India :
The Andaman and Nicobar Islands — They lie in the Bay of Bengal. They are about 550 in number and are of volcanic origin. Barren Island is the only volcanically active island. They are separated by a wide channel called the Ten Degree channel.
The Lakshadweep Islands — They lie in the Arabian Sea. They have been formed by the growth of corals and are fewer in number than the Andaman and Nicobar Islands. Many of them are uninhabited. These islands form the smallest union territory of India.
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