A. Alpha rays
B. Gamma rays
C. Beta rays
D. X-rays
A. Alpha rays
What are Helium atoms called when they have lost two electrons?
Bronze is an __________ consisting primarily of Copper and Tin.
A. Non Metal
B. Plastic
C. Alloy
D. Acid
C. Alloy
The chemical name of Vitamin C is
A. Citric Acid
B. Ascorbic Acid
C. Oxalic Acid
D. Nitric Acid
B. Ascorbic Acid
The most abundant element in the Earth’s atmosphere is
A. Argon
B. Nitrogen
C. Oxygen
D. Krypton
B. Nitrogen
Of all the gases present in the air, which one of the following is highest in percentage?
A. Carbon dioxide
B. Hydrogen
C. Nitrogen
D. Oxygen
C. Nitrogen
Which of the following is the hardest metal?
A. Gold
B. Iron
C. Platinum
D. Tungsten
C. Platinum
German silver is an alloy of:
A. Copper, silver and zinc
B. Copper, nickel and zinc
C. Silver, tin and zinc
D. Silver, nickel and zinc
B. Copper, nickel and zinc