CTET 2 Math and Science Jul 2013 Paper

© examsiri.com

Question : 69 of 120

Marks: +1, -0

When we add aluminium foil to freshly prepared sodium hydroxide solution a gas is produced. Which of the following correctly states the property of this gas ?

Colourless and odourless gas which extinguishes a burning match stick.
Colourless and odourless gas which promotes burning of a candle.
Brown coloured pungent smelling gas.
Colourless and odourless gas which produces a 'pop' sound when a burning match stick is brought near it.

Go to Question:

Prev Question

Next Question