O.P. Bhardwaj, who died recently, was the first Dronacharya Award winning coach of which sport?

When is the 'World Day for Cultural Diversity for Dialogue and Development' celebrated every year?

Which country hosted the meeting of BRICS Astronomy Working Group (BAWG) held in May, 2021?

2. Sunderlal Bahuguna, who died recently, was a famous ……… ..?

What is the name of the campaign launched by India and UNICEF to involve young people in dealing with the Kovid crisis?

The sentences given with blanks are to be filled with an appropriate word(s). Four alternatives are suggested for each question. For each question, choose the correct alternative and click the button corresponding to it.
Light is _____ than sound.

In the following questions, one part of the sentence may have an error. Find out which part of the sentence has an error and click the button corresponding to it. If the sentence is free from error, click the "No error" option.
Vermin (A) / does much harm (B) / to crops (C) / No Error (D)

If a² + a + 1 = 0 then the value of a⁹ is.