Question

India became a party to the convention on biological diversity in,
A. 1994
B.1993
C.1992
D.1988

Answer 1

Hint:- we have to think about the biodiversity chapter in the ecology of 12th class in which at last the discussion occurs about THE EARTH SUMMIT at Rio de Janeiro in Brazil in 1992. In this, it is written about Indian biological diversity.

Complete Answer:- as we know it is a just data-based question that’s why we have to remember it thoroughly.
We directly come to the answer that in 1992 THE EARTH SUMMIT was held at Rio de Janeiro Brazil in which India and other about 196 nations took part and signed in the convention on biological diversity.
But India became a party to the convention on biological diversity in the month of MAY 1994.

Some of the important information is given in additional info,
Additional info: The Convention on Biological Diversity (CBD) is the international legal instrument for "the conservation of biological diversity, the sustainable use of its components and the fair and equitable sharing of the benefits arising out of the utilization of genetic resources" that has been ratified by 196 nations.
United Nations Conference on Environment and Development (UNCED), byname The Earth Summit, the conference held at Rio de Janeiro, Brazil (June 3–14, 1992), to reconcile worldwide economic development with protection of the environment.
Then after 10-year completion means in the year of 2002 The World Summit held at Johannesburg of South Africa and almost all nation is promisingly said to protect biological diversity again

Hence A is the correct option.

Note:- we can directly answer this type of question by remembering some important nations year of becoming a party on the convention of biological diversity. generally, almost every exam always asks about India only.