chapter - bunsen burner

Question 1

what is the function of a barrel

Answer 1

it raises the flame to a suitable height for burning and heating

Question 2

what is the function of a collar

Answer 2

it controls the amount of air entering the burner

Question 3

what is the function of a air hole

Answer 3

it allows air to enter for the gas to burn

Question 4

what is the function of a gas jet

Answer 4

(found inside air hole)
it controls the flow of gas so that air is drawn into the burner through the air hole

Question 5

what is the function of a base

Answer 5

it supports the bunsen burner

Question 6

what is the function of a gas tap

Answer 6

(found at the other end of the gas hose)
it controls the rate of gas flow into the burner

Question 7

traits of luminous flames

Answer 7

the air hole is closed, the flame is unsteady, it is not very hot and is unsuitable for heating due to low heat and it produces soot

Question 8

traits of non-luminous flame

Answer 8

the air hole is partially opened, the flame is steady, it is very hot and suitable as it burns cleanly and without soot

Question 9

when does a strike back happen

Answer 9

it happens when the air hole is fully opened