Darkening of X-ray film is proportional to the: Radiation exposure
X-Rays can penetrate into a solid matter for: Several centimeters
The energy of characteristic X-rays depends on the: Target material
The first ever artificial satellite was launched by: Russia
Who was the first Saudi (first Muslim also) in space? Sultan Salman Al Saud
Who was the first person in space? Yuri Gagarin
Car batteries use __ that reacts with lead zirconate to generate electricity: Sulfuric acid
Which one is not a vestigial organ of a Human being? Eyelids
Work of Pituitary gland in Human body? Controls several other hormone glands
Sulphuric acid is: Dibasic
