उच्चतर तुंगता पर वायुमंडलीय ताप के बढ़ने को क्या कहा जाता है ? 

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).

Headmaster (A)/ has instructed (B) / the teachers to follow the rules of the school. (C)/ No error. (D) 

Identify the segment in the sentence which contains the grammatical error.

The robbers broke in the house at night.

उस कंपनी का नाम बताएं, जिसे कॉलिन्स एयरोस्पेस के लिए यूनाइटेड टेक्नॉलॉजी कॉर्पोरेशन द्वारा एक रणनीतिक भागीदार के रूप में चुना गया है।

Directions: Each sentence below has two blanks , each blank indicating that something has been omitted . Choose the set of words for each blank which best fits the meaning of the sentence as a whole.

She would prefect . . . . . . travel early rather . . . . . . during peak hours.

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 –

कौन सी घटना अंतिम थी ?