2 mL of sodium hydroxide solution is added to a few pieces of granulated zinc metal taken in a test tube. When the contents are warmed, a gas evolves which is bubbled through a soap solution before testing. Write the equation of the chemical reaction involved and the test to detect the gas. Name the gas which will be evolved when the same metal reacts with dilute solution of a strong acid.

2 mL of sodium hydroxide solution is added to a few pieces of granulat

1.	2 mL of sodium hydroxide solution is added to a few pieces of granulated zinc metal taken in a test tube. When the contents are warmed, a gas evolves which is bubbled through a soap solution before testing. Write the equation of the chemical reaction involved and the test to detect the gas. Name the gas which will be evolved when the same metal reacts with dilute solution of a strong acid.
Answer» SOLUTION :`Zn + 2NaOH rarr underset("zincate")underset("Sodium")Na_2ZnO_2+H_2` The gas is detected by bringing a burning CANDLE near the soap BUBBLES. A pop sound is heard. Hydrogen gas will be evolved in this CASE also