What is the percentage of methane in biogas?
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In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/Phrase.To put a spoke in one's wheel
What is the capital of Portugal?
Canberra is capital city of which country?
Who discovered electron?
Who invented Antibiotics?
When did the first Huna invasion take place?
If x2+1x2-6, then find the value of 2x(x-1)x3-x2-x+1