1. Who was the First Astronaut of India
(A) Kalpana Chawla
(B) Rakesh Sharma
(C) Sunita Williams
(D) Ravish Malhotra
2. Who was the First Astronaut to walk on the surface of the Moon
(A) Yuri Gagarin
(B) Neil Armstrong
(C) Michael Collins
(D) Buzz Aldrin
3. Which instrument determines specific gravity of liquids
Question Asked : Bihar Police Sub Inspector Prelims Exam 2018
(A) Gravimeter
(B) Hydrometer
(C) Hygrometer
(D) Hypsometer
4. Which method of water purification does not kill microorganism?
Question Asked : Bihar Police Sub Inspector Prelims Exam 2018
(A) Boiling
(B) Filtration
(C) Chlorination
(D) UV-radiation
5. What does Ozone hole refer to
Question Asked : Bihar Police Sub Inspector Prelims Exam 2018
(A) hole in ozone layer
(B) decrease in the ozone layer in troposphere
(C) decrease in thickness of ozone layer in stratosphere
(D) increase in the thickness of ozone layer in troposphere
6. Which vitamin is necessary for blood clotting?
Question Asked : Bihar Police Sub Inspector Prelims Exam 2018
(A) Vitamin-A
(B) Vitamin-D
(C) Vitamin-K
(D) Vitamin-C
7. What is normal blood pH range?
Question Asked : Bihar Police Sub Inspector Prelims Exam 2018
(A) 4.5-5.5
(B) 5.5-6.5
(C) 7.5-8.0
(D) 8.5-9.0
8. The pH of human blood is normally around
Question Asked : Bihar Police Sub Inspector Prelims Exam 2018
(A) 4.5-5.5
(B) 5.5-6.5
(C) 7.5-8.0
(D) 8.5-9.0
9. Isotopes of an element refers to the same
Question Asked : Bihar Police Sub Inspector Prelims Exam 2018
(A) Atoms of the element having different mass numbers
(B) Atoms of that element having same mass numbers
(C) Atoms of that element having different atomic numbers
(D) Atoms of that element having same atomic numbers
10. How many biodiversity hotspot are there in India?
Question Asked : Bihar Police Sub Inspector Prelims Exam 2018
(A) Sunderbans
(B) Western Ghats
(C) Eastern Ghats
(D) Gangetic Plains
