Question

Q3. During an activity, a student added 10 g iron filings and 10 g sulphur powder in a

bowl. He brought a magnet over the bowl and noticed that iron filings were picked up

by the magnet. He put sulphur and iron filings back into the bowl and put it on heat.

After some time he brought the magnet over it again. This time, the iron filings were

not attracted to the magnet. Which can be inferred from the activity?

(a)The contents in the bowl before heating can be classified as a mixture because

they appear different.

(b)The contents in the bowl before heating can be classified as a mixture because

they could be separated.

(c)The contents in the bowl after heating can be classified as a mixture because they

were not affected by the magnet.

(d)The contents in the bowl after heating can be classified as a mixture because their

properties changed after heating.​

Answer 1

$\large{\bold{\underline{GIVEN \;QUESTION - \: }}}$

During an activity, a student added 10 g iron filings and 10 g sulphur powder in a bowl. He brought a magnet over the bowl and noticed that iron filings were picked up by the magnet. He put sulphur and iron filings back into the bowl and put it on heat. After some time he brought the magnet over it again. This time, the iron filings were not attracted to the magnet. Which can be inferred from the activity ?

$\large{\bold{\underline{REQUIRED \;ANSWER - \: }}}$

Answer ( option b )

(b)The contents in the bowl before heating can be classified as a mixture because they could be separated.

• On heating the mixture of sulphur and iron filings in the magnetic property of sulphur and iron filings lost as it gets decomposed.

Observations Of the activity -

• Iron does not get attracted to a magnet from a mixture of reated iron fillings and sulphur powder on heating.

• We get the black colour of the compound .

Answer 2

Answer:

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