Questions

Acid rain is caused by release of ___ and___ into the air.

Sphalerite is an ore/mineral of

In a market system, the central problems regarding how much and what to produce are solved through the coordination of economic activities brought about by ________ signals.

Which is the form of market where there is lack of competition?

In the following question, a sentence has been given in Active/Passive voice. Out of four alternatives suggested, select the one which best expresses the same sentence in Passive/Active voice.

My father is going to build a six bedroom bungalow.

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'.
I finished my household chores (1)/ before he reached (2)/ to my place after so long. (3)/ No Error (4)

Which country won the first cricket world cup?

___________ is a collection of architectural astronomical instruments, built by Maharaja Jai Singh II.