There are three main groups of oils-animal, vegetable and mineral. Great quantities of animal oil come from whales, creatures of the sea, which are the largest of the animals remaining in the world. To protect the whales from the cold of the Artic seas, nature has provided them with a thick covering of fat, called blubber. When the whale is killed, the blubber is stripped off and boiled down. It produces a great quantity of oil which can be made into food for human consumption. A few other creatures yield oil, but none so much as the whale. The livers of the cod and halibut, two kinds of fish, yield nourishing oil. Both cod liver oil and halibut oil are given to sick children and other invalids who need certain vitamins.. 
Vegetable oil has been known from very old times. No household can get on without it, for it is used in cooking. Perfumes may be made from the oils of certain flowers. Soaps are made from eatable and animal products and the oils of certain flowers. 

The main source of animal oil, is –

Directions (Q .121 - 125 ): Read each sentence to find out whether there is any . grammatical error or idiomatic error in it. The error, if any, will be in one part of the sentence. The number of that part is the answer. If there is ' No error the answer is (5). (Ignore errors of punctuation if any).

Ajay was adamant ( 1 ) / on finishing work before leaving ( 3 ) / by the day . ( 4 ) / No error ( 5 ) 

Select the most appropriate word to fill in the blank.

She was ______ to have worked with some renowned scientists of the world.

In these questions read each sentence to find out whether there is any error in it. If there is no error, the answer is (D).

My lawn (a)/ which is overgrown (b)/needs weeding. (c)/ No error (d).

Shraddha is a singer. She sings _________ 

Directions: In the following questions five sentences are given with a phrase highlighted. These phrases may or may not be correct. Following the sentences are four phrases, from which one phrase will replace the incorrect phrase. The number of that correct phrase will be your answer. If the phrase is correct then option (e) i.e. “No replacement required” will be your answer.

Although of the praise, Mr. Trump never formally nominated Mr. McAleenan to run the agency.

In each of the following questions, sentences are given with blanks to be filled in with an appropriate word (s). Four alternatives are suggested for each question. Choose the correct alternative out of the four and indicate your choice for the correct answer.

Three Indian ad agencies have_______ awards at the International competition. 

In the following question, sentences are given with blanks to be filled in with an appropriate word. Four alternatives are suggested for each question. Choose the correct alternative out of the four and mark your answer.

He never drinks and drives. He is too ------ to do something silly like that.