Questions

According to Newlands' law of Octaves, how many elements exist in nature?

If quantity of a good demanded increases from 200 to 250 then the average income of the population increases from Rs 20,000 to Rs 30,000, find Arc Income elasticity of demand?

The Constituent Assembly adopted Indian national flag on

In December 2017, who launched project ‘DARPAN’ (Digital Advancement of Rural Post Office for a New India)?

The question below consists of a set of labelled sentences. These sentences, when properly sequenced form a coherent paragraph. Select the most logical order of sentences from among the options.

P: Biographies of great men can also help us in learning good manners.
Q: Courtesy and politeness is the key to good manners.
R: No doubt these are little words but if they are spoken at the right moment and in a soft and sweet voice, they are bound to work wonders.
S: The use of polite words like "Sorry", "Please", "Thank you", "Beg your pardon", "Sir" etc. creates a healthy impact on the minds of others.

In the following question, a sentence has been given in Direct/Indirect speech. Out of the four alternatives suggested, select the one which best expresses the same sentence in Indirect/Direct speech.

He said to his partner, "I will not be responsible if the project fails."

In the following question, a sentence has been given in Direct/Indirect speech. Out of the four alternatives suggested, select the one which best expresses the same sentence in Indirect/Direct speech.

She said to me, "I always drink a cup of green tea as soon as I get up."

Why does a piece of cloth, which appears green in sunlight, appear black when it is viewed under red light?