Questions

The percentage change of a number when it is first decreased by 10% and then increased by 10% is

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’.

Gratitude is one of the more essential virtues for real (1)/ inner prosperity and happiness, because it (2)/ can connect us to the Divine. (3)/ No error (4)

In the following passage some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.

Books are our ______ friends. They are our guides. We can learn everything from them. The books contain all the great ______ of the world's leaders and we can learn them by reading the books. The books help us find ______ to our questions. The books never fail us. We should read as ______ books as we can. But all books are not good. So we should ______ only good books.

______ books as we can.

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/Phrase.
Spick and Span

When iron is exposed to moist air, a reddish brown coating of hydrated Iron (III) Oxide (Fe2O3) is deposited on its surface. This reddish brown coating is called

During fermentation of sugar, the compound which is always formed is

In the following question, the sentence given with blank to be filled in with an appropriate word. Select the correct alternative out of the four and indicate it by selecting the appropriate option.

No parents can __________to see their ward waste their potential.

Who created the first mechanical computer, which proved to be the prototype for future computers?