Questions

Elements A, B and C occur as Dobereiners triads. If the atomic mass of A is 7 and that of C is 39, what will be the atomic mass of B?

The question below consists of a set of labelled sentences. Out of the four options given, select the most logical order of the sentences to form a coherent paragraph.

The 1980s saw the introduction

A-of the gas lighter that we

B-commonly use now, which has

C-almost destroyed the match industry

In the following question, out of the given four alternatives, select the one which is opposite in meaning of the given word.

Fritter

In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement".

There is something in a train journey that (was fascinated) a lot of people and I am one of them.

Apurvi Chandela is related to _______.

Who Invented Laser?

Name the first female Nobel Prize winner from India.

A sound wave has a frequency of 4 kHz and a wavelength of 40 cm. The time taken by the sound wave to travel a distance of 3.2 km is