Questions

In which year did Ole Romer measure the speed of light for the first time in the history?

The planet Mars is also known as the ____.

Calculate the time period (in seconds) of a sound wave of wavelength 5m travelling with a speed of 500 m/s.

What is the full form of the Indian Political Party "CPI­M"?

Who has been appointed as the Chief Secretary of the Delhi Government in December 2017?

ΔPQR is right angled at Q. If m∠R = 60o, then find the value of (secP - 1/√3) 

In each of the following questions, a question is followed by information given in three statements. You have to decide the information given in which of the statements
is necessary and sufficient to answer the questions:

A, B, C, D and E are sitting in a circle. Are all of them facing the centre?

I. A is sitting second to the right of D; C is facing the centre and is not an immediate neighbour of D.
II. B, who is sitting between C and D, is second to the right of E, who is not an immediate neighbour of C. B and A are facing each other.
III. D is sitting on the immediate left of B, who is not sitting on the immediate left of A. E is on the immediate right of D.

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'.
The Captain along with (1)/his team has been (2)/invited to the function.(3)/No Error (4)