Questions

α and β are the roots of the quadratic equation x2 – x – 1 = 0. What is the value of α8 + β8?

Many freshwater animals cannot live for long in sea water and vice versa because of the _______ problems, they would face.

Who discovered benzene?

Who invented the bifocal glasses?

In the following questions, one part of the sentence may have an error. Find out which part of the sentence has an error and click the button corresponding to it. If the sentence is free from error, click the "No error" option.

Sooner had he come (A)/ his colleagues (B)/ organised a get together (C)/ No Error (D)

In the following question, out of the four alternatives, select the word opposite in meaning to the word given.
Intrepid

In the following question, a sentence has been given in Active/Passive voice. Out of the four alternatives suggested, select the one which best expresses the same sentence in Passive/Active voice.
The kids were laughing at the old lady.

A sentence/a part of the sentence is underlined. Four alternatives are given to the underlined part which will improve the sentence. Choose the correct alternative and click the button corresponding to it. In case no improvement is needed, click the button corresponding to "No improvement".

He enjoys to go on tours with his children.