Q. What is the primary characteristic of non-metals?
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A.
Good conductors of heat
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B.
High density
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C.
Brittleness
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D.
Luster
Solution
Non-metals are generally brittle in solid form and do not exhibit metallic luster.
Correct Answer: C — Brittleness
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Q. What is the primary use of aluminum in construction?
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A.
Electrical wiring
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B.
Structural components
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C.
Piping
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D.
Insulation
Solution
Aluminum is widely used in structural components due to its strength-to-weight ratio.
Correct Answer: B — Structural components
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Q. Which metal is commonly used in batteries?
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A.
Lead
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B.
Copper
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C.
Iron
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D.
Aluminum
Solution
Lead is commonly used in lead-acid batteries due to its ability to store electrical energy.
Correct Answer: A — Lead
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Q. Which metal is known for its high resistance to corrosion?
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A.
Iron
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B.
Copper
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C.
Aluminum
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D.
Titanium
Solution
Titanium is known for its high resistance to corrosion, making it suitable for various applications.
Correct Answer: D — Titanium
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Q. Which metal is primarily used in the construction of aircraft due to its strength-to-weight ratio?
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A.
Titanium
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B.
Aluminum
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C.
Steel
-
D.
Copper
Solution
Aluminum is primarily used in aircraft construction because of its favorable strength-to-weight ratio.
Correct Answer: B — Aluminum
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Q. Which metal is primarily used in the production of stainless steel?
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A.
Iron
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B.
Nickel
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C.
Chromium
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D.
Zinc
Solution
Chromium is added to iron to produce stainless steel, enhancing its corrosion resistance.
Correct Answer: C — Chromium
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Q. Which non-metal is a diatomic molecule at room temperature?
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A.
Oxygen
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B.
Nitrogen
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C.
Hydrogen
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D.
All of the above
Solution
Oxygen, Nitrogen, and Hydrogen are all diatomic molecules at room temperature.
Correct Answer: D — All of the above
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Q. Which non-metal is commonly used in fertilizers?
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A.
Phosphorus
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B.
Sulfur
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C.
Chlorine
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D.
Argon
Solution
Phosphorus is a key component in fertilizers, promoting plant growth.
Correct Answer: A — Phosphorus
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Q. Which non-metal is essential for the process of photosynthesis?
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A.
Oxygen
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B.
Carbon
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C.
Nitrogen
-
D.
Hydrogen
Solution
Carbon is essential for photosynthesis as plants convert carbon dioxide into glucose.
Correct Answer: B — Carbon
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Q. Which of the following is a property of non-metals?
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A.
Good conductors of heat
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B.
Malleable
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C.
Brittle
-
D.
Ductile
Solution
Non-metals are generally brittle in solid form and do not exhibit malleability or ductility.
Correct Answer: C — Brittle
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Q. Which of the following metals is known to be the least reactive?
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A.
Gold
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B.
Sodium
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C.
Potassium
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D.
Calcium
Solution
Gold is known to be the least reactive metal, making it resistant to corrosion and oxidation.
Correct Answer: A — Gold
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Q. Which of the following metals is known to be the most malleable?
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A.
Iron
-
B.
Gold
-
C.
Lead
-
D.
Copper
Solution
Gold is known to be the most malleable metal, capable of being drawn into extremely thin sheets.
Correct Answer: B — Gold
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Q. Which of the following metals is the best conductor of electricity?
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A.
Copper
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B.
Aluminum
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C.
Gold
-
D.
Silver
Solution
Silver is the best conductor of electricity among metals due to its high electron mobility.
Correct Answer: D — Silver
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Q. Which of the following metals is used in making electrical wires?
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A.
Zinc
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B.
Copper
-
C.
Aluminum
-
D.
Iron
Solution
Copper is widely used in electrical wiring due to its excellent conductivity.
Correct Answer: B — Copper
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Q. Which of the following metals reacts vigorously with water?
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A.
Copper
-
B.
Sodium
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C.
Iron
-
D.
Gold
Solution
Sodium reacts vigorously with water to produce sodium hydroxide and hydrogen gas.
Correct Answer: B — Sodium
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Q. Which of the following non-metals is a gas at room temperature?
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A.
Phosphorus
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B.
Sulfur
-
C.
Chlorine
-
D.
Carbon
Solution
Chlorine is a non-metal that exists as a gas at room temperature.
Correct Answer: C — Chlorine
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Q. Which of the following non-metals is a key component of DNA?
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A.
Oxygen
-
B.
Nitrogen
-
C.
Carbon
-
D.
Hydrogen
Solution
Nitrogen is a key component of DNA, forming part of the nucleotides that make up the genetic code.
Correct Answer: B — Nitrogen
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