Questions

Ozone hole is caused by chemicals like _____.

Sphalerite is an ore/mineral of

Two or more elements combine to form a

Biogas is produced from biomass by

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’.

When the business is ran smoothly (1)/ directors are more than happy to pick an experienced insider, (2)/ who will continue along the present path. (3)/ No error (4)

Improve the bracketed part of the sentence.
The communities of ants are sometimes very large, (numbered) even upto 500 individuals: and it is a lesson to us that no one has ever yet seen quarrel between
any two ants belonging to the same community.

In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.

People may see, and hear, and feel all their lives without ____________ learning the nature of things they see. But reason is the mind's eye, and enables us to see why things are, and when and how events may be made to happen ___________ not to happen. The logician endeavours to ____________ exactly what this reason is which makes the power of men. We all, as I have said, must reason well or ill, but logic is the science of reasoning and enables us to distinguish ______________ the good reasoning which leads to truth, and the bad reasoning which every day betrays people into error _________ misfortune.

people into error _________ misfortune 

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.

The worst form of violence is terrorism ______ due to religious insecurities.