1.
Which of the following is incorrect:
a.
Mercury: Hg
b.
Silver :Ag
c.
Sodium: Na
d. Potassium: Ka
2.
The process of strongly heating an ore in the
presence of air is called:
a.
Smelting
b.
Sublimation
c. Calcination
d.
Segmentation
3.
During rusting, iron:
a. Loses weight
b.
Gains weight
c.
Does not lose weight
d.
Volatilizes
4.
What is the approximate velocity of sound in
air?
a.
3 m/s
b.
30 m/s
c. 300 m/s
d.
3000 m/s
5.
Light year related to:
a.
Speed
b.
Energy
c. Distance
d.
Intensity
6.
Meteorology is the study of:
a. Weather
b.
Meteors
c.
Metals
d.
Earthquakes
7.
Cotton fibers are made of:
a. Cellulose
b.
Starch
c.
Proteins
d.
Fats
8.
Which alloy is used to make magnets:
a. Alnico
b.
Magnelium
c.
Steel
d.
Duralumin
9.
The gas usually filled in electric bulb is:
a.
Hydrogen
b.
Oxygen
c. Nitrogen
d.
Carbon Dioxide
10.
Stainless steel is an alloy of:
a.
Iron, Carbon & Nickel
b.
Iron and Zinc
c.
Iron, Chromium and Zinc
d. Iron, Chromium and Carbon