General Science for Exams

1. Human sweat is the direct result of which life functions?
[A]Respiration and cellular growth
[B]Digestion and disease prevention
[C]Reproduction and cellular transport
[D]Waste removal and temperature control


2. Which of the following substances is an element?
[A]Chlorine
[B]Steel
[C]Sugar
[D]Plastic


3. Stainless is an alloy of ________________________.
[A]Iron, Chromium and Zinc
[B]Iron, Carbon and Nickel
[C]Iron and Manganese
[D]Iron, Chromium and Nickel


4. A deficiency of this mineral can cause stretch marks in our skin; this mineral is
[A]Magnesium
[B]Iron
[C]Zinc
[D]Sodium


5. After the first photons of light are produced, which process is responsible for amplification of the light?
[A]Planck's radiation
[B]Blackbody radiation
[C]Einstein oscillation
[D]Stimulated emission