Questions

How much time does a Geostationary satellite take to complete one orbit, at the height of 35790 km?

A  photon  of  X-ray  has  energy  of  1  keV.  A photon of visible radiation has energy of 3 eV.  In  this  context,  which  one  of  the following statements is not correct?

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 room which yielded so
X-the fourth floor of a
Y-boarding-house in Bleecker Street
Z-much satisfaction to the two boys was on

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".

She was uneasy because she (never be) on a plane before.

In the following question, out of the four alternatives, select the alternative which is the best substitute of the phrase.

A science of race, culture and human development

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'.

She was annoyed (A)/when she found that(B)/the chewing gum was stuck to her hair.(C)/No error(D)

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/phrase.

To let someone off

In the following question, four words are given out of which one word is correctly spelt. Select the correctly spelt word.