Question

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Answer 1

Answer:

its letter d

Explanation:

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Answer 2

Answer:

1. Silver nitrate reacts with hydrochloric acid to form thick curdy white precipitate of silver chloride whereas silver nitrate does not react with nitric acid.

2.When sodium hydroxide is added to ferric chloride solution, a reddish brown precipitate is formed. ... Hint: Filtration is the method by which insoluble substances can be separated out from a solution. The insoluble particles left on the paper are called residue and the liquid that passed through is known as filtrate.

3.Concentrated H2SO4 is added to sugar that forms carbon, steam, and sulfur dioxide. The concentrated H2SO4 is added for dehydration of the sugar to obtain carbon and water. The water gets vapourised due to the heat of the reaction thus forming a column of carbon.

4.White phosphorus reacts with NaOH to form phosphine.

5.When the concentrated HNO3 vapour is passed over red hot copper, copper is oxidised by concentrated nitric acid thereby producing copper oxide whose colour is black. Nitrogen gas and water vapour are also produced in this process.

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