Questions

Burning gasoline is the only process that involving in a chemical change in the given options. A chemical change is a change in the starting substances that are called reactants from the formed new substances that are called products. 

The temperature danger zone for the food that cannot be stored for long time is between 5 degrees to 63 degrees centigrade.

The Tank irrigation is more in the rocky plateau area of the county, where the rainfall is uneven and highly seasonal. The Eastern Madhya Pradesh, Chhattisgarh, Orissa, Interiors of Tamil Nadu and some parts of Andhra Pradesh have more land under tank irrigation.Well Irrigation is common in alluvial plains of the country except the deserts of Rajasthan. Plains of UP, Bihar, Gujarat, Karnataka & Tamil Nadu are the states which are more prominently under the well irrigation.These areas have huge groundwater reserves.

Well irrigation is much older than tank irrigation in India.

The 12th five year plan period was from 2012 to 2017. But from 2015, Narendra Modi, the Prime Minister of India replaced this planning commission of India by NITI Aayog. 

The main theme of the 12th five year plan was "faster, sustainable and more inclusive growth".

Primary succession is the orderly and predictable series of events through which a stable ecosystem forms in a previously uninhabited region. Primary succession occurs in regions characterized by the absence of soil and living organisms.