Question

10. 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.
11. One day Reeta went to a jeweller's shop with her mother. Her mother gave
an old gold jewellery to the goldsmith to polish. Next day when they brought
the jewellery back, they found that there was a slight loss in its weight.
Can you suggest a reason for the loss in weight?
Extended Learning
Activities and Projects
1.
Prepare Index Cards for any four metals and four non-metals. The
card should have information like name of metal/non-metal; its
physical properties, chemical properties and its uses.
Visit a blacksmith and observe how metals are moulded.
2.
3.
Suggest an experiment to compare the conductivity of electricity by
iron, copper, aluminium and zinc. Perform the experiment and
on the results.​

Answer 1

Answer:

she will be able to identify the nature of the gas because the gas major is very different and it is very easy to understand about it