Sunday, August 9, 2020

What are Helium atoms called when they have lost two electrons?

A. Alpha rays
B. Gamma rays
C. Beta rays
D. X-rays

Show Answer
A. Alpha rays

Bronze is an __________ consisting primarily of Copper and Tin.

A. Non Metal
B. Plastic
C. Alloy
D. Acid

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C. Alloy

The chemical name of Vitamin C is

A. Citric Acid
B. Ascorbic Acid
C. Oxalic Acid
D. Nitric Acid

Show Answer
B. Ascorbic Acid

The most abundant element in the Earth’s atmosphere is

A. Argon
B. Nitrogen
C. Oxygen
D. Krypton

Show Answer
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

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C. Nitrogen

Which of the following is the hardest metal?

A. Gold
B. Iron
C. Platinum
D. Tungsten

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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

Show Answer
B. Copper, nickel and zinc
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