Which one of the following is not true concerning cathode rays?
A) They originate from the negative electrode.
B) They travel in straight lines in the absence of electric or magnetic fields.
C) They impart a negative charge to metals exposed to them.
D) They are made up of electrons.
E) The characteristics of cathode rays depend on the material from which they are emitted.
Question 2
The study of the effects of poisons, their detection and identification and their antidotes is known as
A) alkaloidism.
B) carcinogenic testing.
C) berylliosis.
D) toxicology.
Apparent and True Orbits of Alpha Centauri.
X Rays Generated by Accretion of Matter Near a Black Hole
The frontal sinus, an airfilled space just behind the brow, is a unique size and shape in each of us
True Dover Sole
Diffusion of sun rays