Miscellaneous And Useful Chemical Compounds (Part-V)

11. Iodex, a pain relief balm, has the smell of [S.S.C. Online Graduate Level (T-I) 2.09.2016 (Shift-II)]

(a) Methyl Salicylate
(b) Ethyl Salicylate
(c) Propyl Salicylate
(d) Butyl Salicylate

Correct Answer: (a) Methyl Salicylate

Solution:The pain-relieving ointment Iodex contains methyl salicylate, also known as wintergreen oil. It is an organic ester and is produced naturally by many plant species. The characteristic odor of Iodex is due to this organic compound.

12. What is Marble Cancer? [S.S.C. Online Graduate Level (T-I) 7.06.2019 (Shift-I)]

(a) Cancer in humans due to working in mines
(b) Corrosion of marble due to acid rain
(c) Disease in animals due to marble mines
(d) Soil degradation due to marble mines

Correct Answer: (b) Corrosion of marble due to acid rain

Solution:Acid rain causes corrosion of marble, and its gorgeous white color turns yellow. This process is known as marble cancer.

13. In chemistry, soap is a salt of [S.S.C. Online CHSL (T-I) 25.01.2017 (Shift-I)]

(a) Fatty acids
(b) Glycol
(c) Phosphorus
(d) Ammonium carbonate

Correct Answer: (a) Fatty acids

Solution:Soap is a chemical substance that is a sodium or potassium salt of long-chain fatty acids.

14. A basic salt used in daily life is [S.S.C. Online MTS (T-I) 19.09.2017 (Shift-III)]

(a) Ammonium phosphate
(b) Sodium Chloride
(c) Ammonium Sulphate
(d) Sodium Carbonate

Correct Answer: (b) Sodium Chloride

Solution:The basic salt used in daily life is called common salt or sodium chloride (NaCl).

15. What is the chemical name of salt? [S.S.C. Online MTS (T-I) 9.08.2019 (Shift-III)]

(a) Magnesium dioxide
(b) Calcium chloride
(c) Sodium sulfate
(d) Sodium chloride

Correct Answer: (d) Sodium chloride

Solution:The basic salt used in daily life is called common salt or sodium chloride (NaCl).

16. Which chemical compound is composed of magnesium, sulphur and oxygen and is commonly used in detox bath to relax muscles and relieve pain in the shoulders, neck, back and scalp? [S.S.C. Online CHSL (T-I) 02.06.2022 (Shift-II)]

(a) Epsom salt
(b) Glauber's salt
(c) Postal alum
(d) Rock salt

Correct Answer: (a) Epsom salt

Solution:Epsom salt is composed of magnesium, sulphur and oxygen and is commonly used in detox bath to relax muscles and relieve pain in the shoulders, neck, back and scalp. Epsom salt is the most widely different compound than table salt. It was initially termed "Epsom salt" after the English town of Epsom. Table salt is also often dissolved in baths. It resembles table salt and is often dissolved in baths, so you may also know it as "bath salt."

17. Which of the following is used as a preservative? [S.S.C. Online M.T.S (T-I) 26.10.2021 (Shift-I)]

(a) Sodium Palmitate
(b) Sodium Chloride
(c) Magnesium Silicate
(d) Dipropylene Glycol

Correct Answer: (b) Sodium Chloride

Solution:The food items in question (pickles, cheese, sour cabbage, etc.) were preserved by adding salt (NaCl). The sodium (Na) present in salt serves to preserve food by inhibiting the growth and existence of undesirable micro-organisms present in the food.

18. What do you understand by the term Espuma? [C.P.O. S.I. 6.06.2016 (Shift-I)]

(a) foam
(b) soap
(c) salt
(d) calcium

Correct Answer: (a) foam

Solution:Espuma is a Spanish word that is often used for foam.

19. Which of the following statement is incorrect? [C.P.O. S.I. 5.06.2016 (Shift-I)]

(a) Polystyrene was discovered by Edward Simon in 1839.
(b) It is used for plastic and CD boxes.
(c) It is biodegradable in nature.
(d) None of the given options.

Correct Answer: (d) None of the given options.

Solution:Polystyrene was discovered in 1839 by German chemist Edward Simon. It is used for plastics and CD boxes. Its chemical formula is (C8H8)n. It is naturally occurring in very small amounts, so option (d) would be the correct answer.

20. A catalyst is a substance that ______ the rate of a chemical reaction. [S.S.C. Online Stenographer 13.09.2017 (Shift-I)]

(a) first increases then decrease.
(b) increases
(c) decreases
(d) brings no change.

Correct Answer: (b) increases

Solution:catalyst is a substance that increases the rate of a chemical reaction. When the rate of a chemical reaction increases in the presence of a substance, it is called catalysis. The catalyst itself does not participate in the reaction but affects the rate of action.