The 'Greenhouse effect' is produced due to the presence of excess amount of  

Which of the following is biodegradable? 

Which Writ is issued by a High Court or the Supreme Court to compel an authority to perform a function that it was not performing? 

A federal structure for India was first put forward by the: 

Which writ in Latin means do we command?  

Acid rain is caused due to pollution of atmosphere by 

A mixture of water and alcohol can be separated by 

What is the period within which a proclamation of national emergency made by the President is to be placed before each house of the Parliament for approval?