Q21 of 28 Page 2

Why hydrogen gasan explosion?

Hydrogen gas burns with an explosion because Hydrogen gas has the highest calorific value with low ignition temperature.


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19

Do all metals displace hydrogen gas from dilute acids?

 20

What would happen when dil. HCl and dil. NaOH are mixed in equal amounts? Write the equation also?

 22

Write the reaction of zinc with dil — sulphuric acid.

 23

What is the difference between a strong acid and a weak base?