Suggest a scheme for separation of constituents of following mixtures sulphur + sand + sugar + iron fillings

just bring a bar magnet near the cup in which contents are put then iron fillings will be separated and take a net and then pour the mixture through it then sand will be seperated them sulphur rocks will be left then u can separate them manually with ur hands and sugar will be left in the cup.

just bring a bar magnet near the cup in which contents are put then iron fillings will be separated and take a net and then pour the mixture through it then sand will be seperated them sulphur rocks will be left then u can separate them manually with ur hands and sugar will be left in the cup.

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.