Answers to PSC Exam Questions ?

1)The chemical content of laughing gas is ? [ Bill Collector Exam ]

2) Who was the last guru of sikh ? [ Secretariat Assistant Exam ]

3) Minister of Kerala behind the concept of Laksham Veedu ?[ BDO Exam ]

4) Brahma Samaj was founded by [ Store Assistant ]

5) Life of RBC in human body is [ Excise Inspector ]

Please provide the answers to these questions as comments.