Praxis General Science Test Questions Answers - 02 July 2014

1. What is the main constituent of natural gas?
[A]Nitrogen
[B]Methane
[C]Oxygen
[D]Water


2. Which chemical element is represented by the symbol "N"?
[A]Nickel
[B]Niobium
[C]Neon
[D]Nitrogen


3. What is the boiling point of water?
[A]98 degrees
[B]100 degrees
[C]102 degrees
[D]104 degrees


4. What is the chemical name of vinegar?
[A]Acetic acid
[B]Hydrochloric acid
[C]Oxalic acid
[D]Sodium bicarbonate


5. When flying aeroplane at a high altitude, ______________________________________.
[A]Normal atmospheric pressure is maintained
[B]The atmospheric pressure increases
[C]The atmospheric pressure decreases
[D]Normal humidity is maintained