21. Bihar Current Affairs-2020-22

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1.
According to livestock census of 2019, livestock of Bihar has been increased/decreased by how much percentage ?
2.
Who was Rambalak Mahto,who died recently ?
3.
World's biggest face mask was manufactured at which place in Bihar ?
4.
Who is the current chairman of Bihar Electricity Regulatory Commission ?
5.
Who is the author of "Bondage: Human Rights and Development" ?