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environmental studies mcq for tet

21. Traces of radioactive waste present in water can cause?
(A) Cancer
(B) Eye cataract
(C) DNA breakage
(D) All of these



22. How much area is covered under forest in India?
(A) 33.47 %
(B) 29.47 %
(C) 22.47 %
(D) 19.47 %



23. The Greenhouse effect was first recognized by?
(A) JeanBaptiste Greenwood
(B) JeanBaptiste Fourier
(C) JeanBaptiste Greenhouse
(D) None of the above



24. Which of the following is responsible for global warming?
(A) Chloroflouro carbons
(B) Methane
(C) Carbon dioxide
(D) All of these



25. Which of the following acid is present in Acid rain?
(A) HNO3
(B) H2SO4
(C) CH3COOH
(D) Both (A) & (B)