UPSC Prelims Mini Mock Test: 72

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1).
Who among the following judges of Supreme Court of India was many times called as “Champion of State Rights”?
2).
The birds not have respiratory trouble at the time of flying at high altitude. What is the reason for this?
3).
Consider the following statements about ‘Duckweed Based Wastewater Treatment technology’:
  1. The technology is mainly used for removal of phosphates and nitrogen
  2. Cold regions are not suitable for the duckweed based treatment systems
  3. The technology results in production of toxic biomass as waste product
Which of the above statements is/are correct?
4).
Consider the following statements:
  1. Pulmonary artery is responsible for transporting de-oxygenated blood to lungs
  2. Renal artery is responsible for carrying deoxygenated blood out of the kidneys. 
Which of the above is  / are correct statements?
5).
The RO water purifier protects us from the harmful effects of microbes such as E. Coli, Salmonella and Shigella. What is the principle behind this?

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