Chemistry ยท General Awareness
Chemistry of Metals and Alloys
1,851 Questions
Review the physical and chemical properties of various metals and their common alloys. This collection covers industrial applications, metallurgical processes, and practical uses of elements like silicon and boron. Practice these questions to strengthen your chemistry fundamentals for exams.
Properties of metalsCommon alloysIndustrial metallurgyChemical applications
Chemistry of Metals and Alloys Questions
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Silver-ammalgam
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Ammonium-ammalgam
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Sodium-ammalgam
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Zinc-ammalgam
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None of these
A
Correct answer
Explanation
When a little Hg is poured into a silver nitrate solution, a tree like growth of silver ammalgam is observed. This is called the mercury tree. Hence, this option is correct.
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Chlorine
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Sulphur
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Mercury
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Hydrogen
C
Correct answer
Explanation
Quicksilver is the common name for the element mercury, known for its liquid state at room temperature.
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chromium
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silicon
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lead
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copper
B
Correct answer
Explanation
Integrated Circuit (IC) chips are made from semiconductor materials, with silicon being the most widely used due to its electrical properties and abundance.
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Copper
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Tin
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Iron
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Aluminium
D
Correct answer
Explanation
Rubies and sapphires are both varieties of the mineral corundum, which is crystalline aluminium oxide (Al2O3).
C
Correct answer
Explanation
The Vedic people, specifically during the Later Vedic period, discovered and began using iron, which they referred to as 'Shyama Ayas' or 'Krishna Ayas'. This allowed for clearing dense forests and expanding agriculture.
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Alloy 1050
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Alloy 1060
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Alloy 1100
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Alloy 1199
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Alloy 2014
D
Correct answer
Explanation
Alloy 1050 contains 99.5% of aluminium by mass, alloy 1060 contains 99.6% aluminium by weight, alloy 1100 contains 99.0% aluminium by mass, alloy 1199 contains 99.9% of aluminium by weight and alloy 2014 contains 90.9% of aluminium by mass. Hence, alloy 1199 has the maximum percentage of aluminium by weight.
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Alloy 7178
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Alloy 7116
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Alloy 3003
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Alloy 1050
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None of these
B
Correct answer
Explanation
Alloy 7116 is composed of 93.87-95.17% Al, 0.15% Si, 0.3% Fe, 0.5-1.1% Cu, 0.05% Mn, 0.8-1.4% Mg, 4.2-5.2% Zn, 0.05% V, 0.05% Ti and 0.03% Ga.
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Iron and Carbon
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Iron and Man
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Iron and Chromium
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Iron and lead
A
Correct answer
Explanation
Steel is primarily an alloy of iron and carbon, where carbon is added to improve the strength and fracture resistance of the iron.
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Aluminum
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Titanium
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Copper
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Platinum
B
Correct answer
Explanation
Titanium is renowned for its high strength-to-weight ratio, making it comparable in strength to steel while being significantly lighter. Aluminum is lighter but generally less strong than steel, while copper and platinum are much denser.
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Brass
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Steel
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Bronze
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German silver
C
Correct answer
Explanation
Bronze is an alloy consisting primarily of copper, usually with tin as the main additive. While compositions vary, the description provided matches the general definition of bronze.
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Mercury
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Helium
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Ammonia
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None of the above
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Rodium
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Benzene
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Copper
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Tin
A
Correct answer
Explanation
Rhodium is considered one of the rarest and most valuable precious metals on Earth, often found in small quantities in platinum or nickel ores.
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copper and zinc
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tin and zinc
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copper and tin
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iron and zinc
C
Correct answer
Explanation
Bronze is a metallic alloy consisting primarily of copper, usually with tin as the main additive. Other elements are sometimes added to achieve specific properties.
C
Correct answer
Explanation
Copper reacts with moisture, carbon dioxide, and oxygen in the atmosphere to form a green layer of basic copper carbonate, known as patina.