Question
Which of the following fatty acids does NOT form
soap?Solution
 Butyric acid is not used to form a soap. • Soaps are the metallic salts of fatty acids and Sodium (Na) & Potassium (K) are the commonly used salts. • RCOO-  Na+ or RCOO- K+ is the general formula of soaps where R is the alkyl group of the parent fatty acid. • Palmitic acid, Stearic acid, Oleic acid, Lauric acid, and Myristic acid are used to prepare soaps. • The metallic ion is the hydrophilic (water-loving) part and the organic chain is the lipophilic (oil/fat- loving) part.
Drink ____ of liquids ____ the day even if you don’t feel thirsty.
Fill in blank 63 with the most appropriate word.
(a) The lady seemed to be quite disturbed,as she was ____________about her husband's health.
(b) Sheena came up to me and expressed that she had ...
The _____ of our civilization from an agricultural society to today's complex industrial world was accompanied by war. Â
The special campaign featuring the ferocious, talking dinosaur has been ___________ by the United Nations Development Programme to urge more climate act...
The comfortable chaise in the corner of the room was her favourite spot to ____ with a good book and relax.
The statue, which was declared as a new ___________ of an antique, was recovered hours before it was scheduled to be shipped to Malaysia.
Choose the most suitable option to fill in the blanks in the sentences below.
The project became so expensive that we had __________.
Fill the blank with the most appropriate word .
Suresh just -----------that ramesh is in America
Ravi had a bandage ______ round his finger.
