Question

Direct combination reactions are called as _____

2. Metals arranged according to their reactivity is known as _____

3. The hydroxides which react with acids and bases to form salt and water are called___

4. The phenomenon in which an element has same chemical properties but different

physical properties is known as _____

5. _____ is used for making shoe polish and printers ink.​

Answer 1

Answer:

1 danger

2do 3hello

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