He is writing a letter to his mother.वाक्य का हिन्दी रूपांतरण है-

The Sangai Festival is celebrated in __

A man can row at a speed of $$4{1\over 2}$$km/hr in still water. If he takes 2 times as long to row a distance upstream as to row the same distance downstream, then the speed of stream (in km/hr) is : 

Direction: In the following questions, out of the four alternatives, choose the one which can be substituted for the given sentence.

That cannot be conquered 

Find the odd word from the following:

The cost of fencing a circular plot at the rate of Rs.15 per meters Rs. 3,300. What will be the cost of flooring the plot at the rate a Rs . 100 per square meter? 

Where the Bio-chemical compounds are used? 

Select the most appropriate idiom ( in the context) to fill in the sentence.

Radha is unable to continue working in this office. Hard work is ______ on her health.