MCQ on Chemistry in Everyday Life: Introduction & Explanation

Ans: c. Antifertility

Explanation: A mixture of Norethindrone and ethynylestradiol is present in most of the antifertility drugs. A synthetic progestrone derivative that is mostly used as an antifertility drug is Norethindrone and ethynylestradiol is an estrogen derivative which is used in the combination with progesterone derivative.

Ans: b. methyl salicylate

Explanation: The main ingredient in the composition of iodex medicine is methyl salicylate. This is also known as oil of wintergreen oil or wintergreen oil as it is obtained from the plants of wintergreen. Iodex medicine is used for the treatment of rheumatic pains and acts as a remedy for bruises, sprains, and pains.

Ans: c. Release of extra gastric acids which can cause a decrease in the pH level

Explanation: Due to the release of gastric acid in the stomach, the Ph level gets decreased which results in the increase of acidity of the stomach.

Ans: a. Luminal

Explanation: Luminal is a drug which is used in treating insomnia and anxiety. It is also used to control seizures. The Luminal drug helps in calming the electrical activity in the brain which reduces the occurence of the seizures.

Ans: a. Sand, Cement, Gravel and Water.

Explanation: The mixture of Sand, Cement, Gravel and water, which is Concrete, is used in the construction of roofs and floor. Cement is important material in the construction of buildings. Cement acts a glue which keeps everything together. The main 4 components are added in a proportion in a proper manner keeping in mind the work for which cement is required.

Ans: d. Cetyltrimethylammonium bromide

Explanation: Cetyltrimethylammonium Bromide is a cationic detergent which is widely used as a organic detergent in the composition of hair conditioners. It acts as an emulsifier which prevents the flyaway hairs that are caused due to the static buildup in the hairs. 

Ans: a. Dettol

Explanation: Dettol is an antiseptic mixture of α-terpineol and chloroxylenol. The liquid is also used as a disinfectant, preventing the growth of infections and bateria. When applied to any living tissue, it helps in fighting with the germs and thus disinfects the surface.

Ans: c. Salvarsan

Explanation: Salvarsan is used as a medicine for the treatment of Syphillis, which is a sexually transmitted disease. The antimicrobial agent kills the bacteria which causes syphillis and does not harm the patients. 

Ans: b. It contains a mixture of progesterone derivatives and estrogen

Explanation: The birth control pills are composed of a mixture of progesterone derivatives and estrogen which helps in the prevention of the ovulation. The pills results in the thinning of the uterus lining and thickening of the cervical mucous which prevents the release of eggs from the ovaries and as a result the sperm will not reach the egg. 

Ans: d. Tranquilizer

Explanation: Equanil is a medicine used in the treatment of nervousness and anxiety. It helps in calming the nervous system to reduce anxiety. Tranquilizers are also used in the treatment of mental diseases from mild to severe as they induce sleep. Some tranquilizers can be mild in nature thus suitable in relieving tension.

Ans. b. Sodium Carbonate

Explanation: Washing soda is a chemical compound whose chemical formula is Na₂CO₃, that is known as sodium carbonate. This is a salt of carbonic acid. Washing Soda is used as a cleansing agent. It is used in laundry cleaning, for manufacturing textile and paper. It also acts as a laboratory reagent.