Question

1) what are the strongest substances top 10
2) what is the smallest thing in the world ever discovered
3)what is theta tan theta
4)what are the what is mean by displacement reaction give example
5)what is the double displacement reaction give example
6)define exthermic and endothermic reaction
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Answer 1

Answer:

Hey mate✌

Here ur answer ..

2)quark particles

3)tan theta means the ratio of opp sides to adj sides

It is a reciprocal of cot theta

4)In a chemical reaction the one element replaces to other element in a compound . This reaction os known as displacement reaction

5) In a chemical reaction the two elements replces to from other compound . This reaction is known as double displacement reaction

6) i)the reaction which release the energy to its surroundings . They are known as exothermic reaction

ii)the reaction which absorbs the energy from surroundings . They are known as endothermic reaction

Explanation:

Sorry i don't know first question

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