PART – 8
51. Which gas is most abundant in the earth’s atmosphere?
Answer: Nitrogen
52. How many people are there in the world?
Answer: Over 7 billion
53. Which is the continent with the most number of countries?
Answer: Africa
54. Which is the most common non-contagious disease in the world?
Answer: Tooth Decay
55. How many strings does a violin have?
Answer: Four
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