One of a class of elements having properties intermediate to metals and nonmetals. These are the highly reactive elements located in Group 1 of the periodic table. These elements have one electron in their outer energy level which makes them highly reactive with water and halogens.
These are the reactive elements located in Group 2 of the periodic table. These elements have two electrons in their outer energy level which makes them reactive with water and halogens.
These are the Group 3 or d-block elements. These dense metals with high boiling points can have different oxidation states and all are solid at room temperature with the exception of mercury.
This is a property of solid metals. Capable of being shaped or formed, by hammering or pressure.
This is the first element in the periodic table, atomic number is one. This element combines readily with carbon and oxygen to form the basis for a huge number of organic compounds necessary to life.

to make a supersaturated solution, make a saturated solution of sugar by adding 360 grams of sugar to 100 ml of water at 80 degrees celsius. when the water cools back down to 25 degrees, that 360 grams of sugar will still be dissolved even though the water should only dissolve 210 grams of sugar.

i wish i could but this one is weird give me abc and i can solve it.

hydrocarbons are organic compounds that contain only hydrogens and carbons. they can be saturated (those which contain only carbon-carbon single bonds) or unsaturated (those which contain carbon-carbon double or triple bonds) in nature. hydrocarbons can undergo several reactions like substitution, elimination etc.  

on substituting one or more hydrogen atoms in hydrocarbon it results in the formation of haloalkane. as the halogen atoms are large compared to the carbon and hydrogen atoms, due to which the molecular weight increases and the bond become polar because of presence electronegative halogen atom and results in the increase in boiling point of the haloalkane.

thus, the correct option is (b) that is the boiling point of the new compound increases on substituting a hydrogen atom with a halogen in a hydrocarbon.