In base 8, 15 is represented as '17' (1*8 + 7).

Malaria is transmitted by the female Anopheles mosquito, which acts as a vector.

Dengue fever is transmitted by Aedes mosquitoes.

Displacement is a vector quantity as it has both magnitude and direction.

Urea is a waste product formed from the breakdown of proteins and is excreted in urine.

Vitamin C is a water-soluble vitamin, which means it dissolves in water and is not stored in the body.

Google Chrome is a web browser used to access the internet.

Abiotic factors are the non-living physical and chemical components of an ecosystem, such as temperature.

Tall describes a noun and is therefore an adjective.

'Quickly' describes how an action is performed, making it an adverb.

Alkanes are saturated hydrocarbons with the general formula CnH2n+2. C4H10 (butane) fits this formula.

Electrical current can be compared to water flow in a pipe, where the flow of water represents the flow of electric charge.

'Easy' is the antonym of 'difficult'.

Dimethyl ether is an ether, characterized by the presence of an oxygen atom connected to two alkyl or aryl groups.

An even function satisfies f(x) = f(-x). f(x) = x^2 is even.

Machinery is considered a fixed resource as it does not change with the level of output in the short term, making option 2 correct.

Spherical geometry is an example of non-Euclidean geometry, where the usual rules of Euclidean geometry do not apply.

The –F group is an example of a -I effect as it withdraws electron density through sigma bonds.

All halogens (-F, -Cl, -Br, -I) exhibit -I effect, but -F is the strongest among them.

The –NO2 group withdraws electron density through resonance, exhibiting a -M effect.

Plants are a biotic factor as they are living organisms that interact with other organisms in the ecosystem.

Baking a cake is a chemical change as it results in the formation of new substances.

Colligative properties depend on the number of solute particles in a solution, and boiling point elevation is one such property.

A compound sentence contains two independent clauses, as in 'I like tea, and I like coffee.'

Acetaldehyde can exist in two forms (keto and enol) that readily interconvert, demonstrating tautomeric isomerism.

Nylon-6,6 is a condensation polymer formed by the reaction of hexamethylenediamine and adipic acid.

All of the options listed are valid constraints that can be applied to a set of integers, thus making 'All of the above' the correct answer.

Each of the options listed represents a valid constraint that can be applied to a set of integers.

Nylon-6,6 is a copolymer made from two different monomers: hexamethylenediamine and adipic acid.

Sugar is an example of a crystalline solid, characterized by a well-ordered structure.