Question

Give examples of the following :

(i) Two metals which do not react with water at all. [1]

(ii) Two metals which react with very dil. HNO3 to evolve hydrogen gas. [1]

(iii) An acidic and a basic oxide. [1]

(iv) Two metals which melt when kept on palm.

(v) Two metals which can be dissolved in aqua regia.​

Answer 1

Explanation:

1.lead, silver

2. potassium , calcium

3. nitrous oxide(N2O)-acidic

copper oxide(CuO)-basic

4.gallium, cesium

5.gold, platinum.

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Answer 2

Answer:

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Explanation:

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1 ➫ silver , gold

2 ➫ Manganese , Magnesium

3 ➫ MgO (acidic) , SO2 (basic)

4 ➫ Gallium

5 ➫ Gold , Platinum

hope it helps dude !!