Chemistry - Study Mode

[#431] Milk tastes sour when kept in the open for sometime due to the formation of
Correct Answer

(A) Lactic acid

Explanation

Solution: Like many other things, milk contains bacteria, Milk also naturally contains a kind of sugar known as “lactose.” The bacteria that live in milk get energy from this special sugar and use it to reproduce to make even more bacteria. When the bacteria use the lactose sugars to reproduce, they change it from “lactose sugar” into “lactic acid,” which tastes sour.

[#432] ________ is used for making vinegar.
Correct Answer

(D) Acetic acid

Explanation

Solution: Acetic acid is used for making vinegar.

[#433] The Latin word formica means ant. The name formic acid is derived from this Latin word because
Correct Answer

(C) this acid was first obtained by the distillation of ants

Explanation

Solution: The Latin word formica means ant. The name formic acid is derived from this Latin word because this acid was first obtained by the distillation of ants.

[#434] The ore which is found in abundance in India is
Correct Answer

(A) monazite

Explanation

Solution: The ore which is found in abundance in India is monazite.

[#435] The inherited traits of an organism are controlled by
Correct Answer

(C) DNA molecules

Explanation

Solution: The inherited traits of an organism are controlled by DNA molecules. The traits an organism displays are ultimately determined by the genes it inherited from its parents, in other words by its genotype. Animals have two copies of all their chromosomes, one from each parent.