Questions

Opportunity costs exist because

What happens in an oxidation reaction?

Which of the following is a greenhouse gas or a gas, which can deplete the ozone layer?

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.

A large _______ of angry bisons rampaged through the villages.

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'.

Unless you don't obey (1)/ your elders you (2)/ will not succeed in your life. (3)/ No Error (4)

What was invented by Zacharias Jansen?

Who invented Rocket?

Who among the following has been recently awarded with ‘Indian of the year’ award?