Question

Reaction of iron nail with blue copper sulphate solution is an example of __________reaction. (2) Reactions in which energy is absorbed are called ____________ reactions. (3) The excretory unit of the kidney is called a_____________. (4) The actual site of gas exchange in humans is_________.

2 point

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Answer 1

Answer:

1.  Displacement

2. Endothermic

3. Nephron

4. Lungs

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Answer 2

Answer:

Explanation:

1) This is an example of a Displacement reaction.

2)Reactions in which energy is absorbed are called ___ENDOTHERMIC_________ reactions.

3)The excretory unit of the kidney is called a NEPHRONS.

4)The actual site of gas exchange in humans iS ALVEOLI OF LUNGS