Ncert solutions

Ncert solutions

Grade 8

Materials: Metals and Non-Metals | Exercise

Question 10

Q10) Saloni took a piece of burning charcoal and collected the gas evolved in a test tube.

(a) How will she find the nature of the gas?

(b) Write down word equations of all the reactions taking place in this process.

Solution:

(a) Saloni should add some water in the test tube in which gas was collected. Shake the test tube and then bring a litmus paper near the test tube.The solution will turn litmus paper red. This shows that the gas is acidic.

(b)Charcoal contains carbon which on burning forms carbon dioxide gas.

C+O_2→CO_2

The gas evolved is collected in a test tube and water is added to it.

CO_2+H_2O→H_2CO_3

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subject-cta

Question 10

Q10) Saloni took a piece of burning charcoal and collected the gas evolved in a test tube.

(a) How will she find the nature of the gas?

(b) Write down word equations of all the reactions taking place in this process.

Solution:

(a) Saloni should add some water in the test tube in which gas was collected. Shake the test tube and then bring a litmus paper near the test tube.The solution will turn litmus paper red. This shows that the gas is acidic.

(b)Charcoal contains carbon which on burning forms carbon dioxide gas.

C+O_2→CO_2

The gas evolved is collected in a test tube and water is added to it.

CO_2+H_2O→H_2CO_3

Still have questions? Our expert teachers can help you out

Book a free class now

Want to top your science exam ?

Learn from an expert tutor.

Book a free class now
subject-cta
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