Questions

"GDP price index" measures changes in the value of final output produced in the nation.

In the given options, all are the benfits of ozone. But, the main benefit of ozone is absorbing ultraviolet radiation from the Sun.

Mercantilism was the principle that wealth of a nation comes from trading with other nations and also comes by imposing government regulations on all of the nation's economic interests.

The main principles of mercantilism:

• the country's wealth is determined by the amount of precious metals in the country,

• Wealth is created in business relations (International Trade)

• The goal is an active trade balance of trade,

• to serve protectionism, government subsidies and the issue of protective tariffs.

C. Rangrajan has written the book Growth & Finance.

The International Year of the Periodic Table of Chemical Elements was launched by UNESCO at its Headquarters in Paris on  29th Jan 2019.

‘has’ is incorrectly used since the sentence is in past tense. Moreover, the subject is cities, which is plural.