Question

please give me answer of 3 ,4 ,5 number questions who will answer all the questions will be marked as brainest . it's very urgent

Answer 1

ANSWER OF 3

A sample of yellow powdered sulfur in a deflagrating spoon is ignited until it burns spontaneously in air with a light blue flame. The burning sulfur is then inserted into the flask. The sulfur reacts with oxygen in the flask to form sulfur dioxide gas, which then dissolves in the water, forming sulfurous acid.

ANSWER OF 4 IS

Rusting is a chemical reaction which takes place when iron is exposed to moist air. It reacts with oxygen and water to form iron oxide. So, the iron nail kept near the gateway of India in Mumbai will rust faster because there the humidity is more.

ANSWERS OF 5 IS

Magnesium strip is dipped/dropped in dil.acid (any) so as to clean the layer of magnesium carbonate and magnesium bicarbonate...
Acids are generally used to remove corroded layers in metals

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