Chemical properties of metals
MCQs
Multiple-choice questions (MCQs) on the chemical properties of metals, commonly asked in exams like NTSE and IIT-JEE, along with their answers:
Type A
1. Metals generally react with acids to produce:
- A) Carbon dioxide
- B) Hydrogen gas
- C) Oxygen gas
- D) Nitrogen gas
- Answer: B) Hydrogen gas
2. Which of the following metals does not react with cold water?
- A) Sodium
- B) Magnesium
- C) Iron
- D) Copper
- Answer: D) Copper
3. When a metal reacts with oxygen, the product formed is generally:
- A) Metal hydroxide
- B) Metal oxide
- C) Metal carbonate
- D) Metal chloride
- Answer: B)
Metal oxide
4. The formation of a greenish layer on copper when exposed to air is due to the formation of:
- A) Copper nitrate
- B) Copper oxide
- C) Copper carbonate
- D) Copper sulfate
- Answer: B)
Copper oxide
5. Metals can displace less reactive metals from their salts in aqueous solutions. This property is referred to as:
- A) Corrosion
- B) Precipitation
- C) Reduction
- D) Displacement
- Answer: D)
Displacement
6. Which metal is used in galvanization to protect iron from rusting?
- A) Zinc
- B) Lead
- C) Copper
- D) Silver
- Answer: A)
Zinc
7. The reaction of metals with non-metals often results in the formation of:
- A) Ionic compounds
- B) Covalent compounds
- C) Metallic compounds
- D) Molecular compounds
- Answer: A)
Ionic compounds
8. The ability of metals to be drawn into thin wires is known as:
- A) Malleability
- B) Ductility
- C) Hardness
- D) Tensility
- Answer: B)
Ductility
9. The metal that does not react with dilute hydrochloric acid is:
- A) Zinc
- B) Magnesium
- C) Copper
- D) Silver
- Answer: D)
Silver
10. Which metal reacts vigorously with both acids and water?
- A) Sodium
- B) Iron
- C) Lead
- D) Aluminium
- Answer: A)
Sodium
11. Which of the following metals does not react with steam?
- A) Magnesium
- B) Iron
- C) Zinc
- D) Aluminium
- Answer: C)
Zinc
12. Metals are often found in nature as:
- A) Ores
- B) Salts
- C) Gases
- D) Liquids
- Answer: A)
Ores
13. Which metal is used in making coins because it does not react with air or water?
- A) Zinc
- B) Copper
- C) Aluminium
- D) Iron
- Answer: B)
Copper
14. When metals react with acids, the products formed are usually:
- A) Metal salts and water
- B) Metal oxides and water
- C) Metal hydroxides and hydrogen gas
- D) Metal carbonates and carbon dioxide
- Answer: C)
Metal hydroxides and hydrogen gas
15. The metal that reacts with both dilute hydrochloric acid and dilute sulphuric acid but not with cold water is:
- A) Magnesium
- B) Iron
- C) Zinc
- D) Aluminium
- Answer: B)
Iron
16. Which of the following metals is most easily oxidized?
- A) Iron
- B) Aluminium
- C) Copper
- D) Gold
- Answer: A)
Iron
17. The metal that can displace hydrogen from water is:
- A) Calcium
- B) Aluminium
- C) Nickel
- D) Silver
- Answer: A)
Calcium
18. The metal that forms an amalgam with mercury is:
- A) Gold
- B) Copper
- C) Zinc
- D) Silver
- Answer: A)
Gold
19. Metals generally exhibit which kind of ionization in their chemical reactions?
- A) Oxidation
- B) Reduction
- C) Neutralization
- D) Ionization
- Answer: A)
Oxidation
20. Which metal is commonly used in batteries due to its high reactivity?
- A) Iron
- B) Nickel
- C) Sodium
- D) Aluminium
- Answer: C) Sodium
Type B
Physical Properties of Metals:
1. Which property of metals allows them to be hammered into thin sheets?
- A) Ductility
- B) Malleability
- C) Conductivity
- D) Density
- Answer: B) Malleability
2. Which metal is known for its exceptional conductivity of electricity?
- A) Iron
- B) Lead
- C) Copper
- D) Aluminum
- Answer: C)
Copper
3. Which physical property of metals makes them shiny and reflective?
- A) Density
- B) Malleability
- C) Opacity
- D) Luster
- Answer: D)
Luster
4. Which metal is commonly used in aircraft due to its lightweight and high strength-to-weight ratio?
- A) Gold
- B) Titanium
- C) Silver
- D) Nickel
- Answer: B)
Titanium
5. Which metal is liquid at room temperature?
- A) Iron
- B) Aluminum
- C) Mercury
- D) Zinc
- Answer: C) Mercury
Physical Properties of Non-metals:
6. Which physical property of non-metals makes them generally poor conductors of electricity?
- A) Brittleness
- B) Ductility
- C) Opacity
- D) Electrical conductivity
- Answer: D)
Electrical conductivity
7. Which non-metal is known for its allotropes including diamond and graphite?
- A) Carbon
- B) Oxygen
- C) Nitrogen
- D) Sulfur
- Answer: A)
Carbon
8. Which non-metal is essential for plant growth and is a component of fertilizers?
- A) Oxygen
- B) Hydrogen
- C) Nitrogen
- D) Sulfur
- Answer: C)
Nitrogen
9. Which non-metal exists as a diatomic gas under normal conditions?
- A) Chlorine
- B) Phosphorus
- C) Sulfur
- D) Fluorine
- Answer: A)
Chlorine
10. Which non-metal is used in matches due to its flammable properties?
- A) Oxygen
- B) Phosphorus
- C) Nitrogen
- D) Hydrogen
- Answer: B)
Phosphorus
Mixed Questions (Metals and Non-metals):
11. Which property is common to both metals and non-metals?
- A) Luster
- B) Malleability
- C) Ductility
- D) Conductivity
- Answer: A)
Luster
12. Which metal reacts with water to produce hydrogen gas?
- A) Sodium
- B) Aluminum
- C) Iron
- D) Copper
- Answer: A)
Sodium
13. Which non-metal is commonly found in proteins and nucleic acids?
- A) Oxygen
- B) Carbon
- C) Nitrogen
- D) Hydrogen
- Answer: C)
Nitrogen
14. Which metal is alloyed with tin to create pewter?
- A) Copper
- B) Lead
- C) Zinc
- D) Aluminum
- Answer: B)
Lead
15. Which non-metal is used in the manufacture of fertilizers and explosives?
- A) Carbon
- B) Phosphorus
- C) Sulfur
- D) Chlorine
- Answer: B)
Phosphorus
16. Which property of metals allows them to conduct heat efficiently?
- A) Opacity
- B) Malleability
- C) Brittleness
- D) Conductivity
- Answer: D)
Conductivity
17. Which metal is used as a protective coating for iron to prevent rusting?
- A) Zinc
- B) Silver
- C) Gold
- D) Nickel
- Answer: A)
Zinc
18. Which non-metal is essential for respiration and combustion processes?
- A) Carbon
- B) Nitrogen
- C) Oxygen
- D) Sulfur
- Answer: C)
Oxygen
19. Which metal is commonly used in electrical wiring due to its high conductivity and resistance to corrosion?
- A) Aluminum
- B) Nickel
- C) Copper
- D) Zinc
- Answer: C)
Copper
20. Which non-metal is used in the production of sulfuric acid, one of the most widely used industrial chemicals?
- A) Carbon
- B) Nitrogen
- C) Oxygen
- D) Sulfur
- Answer: D) Sulfur
Type C
1. Non-metals generally form which type of ions in their chemical reactions?
- A) Cations
- B) Anions
- C) Radicals
- D) Isotopes
- Answer: B)
Anions
2. Which non-metal is commonly used in water purification due to its ability to form strong oxidizing agents?
- A) Oxygen
- B) Chlorine
- C) Nitrogen
- D) Sulfur
- Answer: B)
Chlorine
3. The non-metal that exists as a diatomic molecule in its elemental form is:
- A) Carbon
- B) Hydrogen
- C) Oxygen
- D) Nitrogen
- Answer: D)
Nitrogen
4. Non-metals generally react with metals to form:
- A) Oxides
- B) Hydroxides
- C) Salts
- D) Alloys
- Answer: C)
Salts
5. Which non-metal is a major constituent of natural gas and petroleum?
- A) Carbon
- B) Hydrogen
- C) Sulfur
- D) Nitrogen
- Answer: B)
Hydrogen
6. Non-metals are generally poor conductors of:
- A) Electricity
- B) Heat
- C) Both A and B
- D) Neither A nor B
- Answer: C)
Both A and B
7. The non-metal used in the manufacture of fertilizers due to its essential role in plant growth is:
- A) Phosphorus
- B) Fluorine
- C) Bromine
- D) Selenium
- Answer: A)
Phosphorus
8. Which non-metal is a major component of bones and teeth?
- A) Carbon
- B) Fluorine
- C) Calcium
- D) Phosphorus
- Answer: D)
Phosphorus
9. The non-metal that forms a gaseous diatomic molecule and is essential for respiration is:
- A) Oxygen
- B) Fluorine
- C) Chlorine
- D) Nitrogen
- Answer: A) Oxygen
10. Non-metals tend to gain electrons in chemical reactions, leading to:
- A) Oxidation
- B) Reduction
- C) Neutralization
- D) Ionization
- Answer: B)
Reduction
11. Which non-metal is used in the semiconductor industry for making computer chips?
- A) Silicon
- B) Bromine
- C) Iodine
- D) Selenium
- Answer: A)
Silicon
12. The non-metal that forms a purple vapor and is used in photography is:
- A) Sulfur
- B) Iodine
- C) Bromine
- D) Chlorine
- Answer: B)
Iodine
13. Non-metals react with oxygen to form:
- A) Oxides
- B) Hydroxides
- C) Carbonates
- D) Salts
- Answer: A)
Oxides
14. The non-metal that is essential for the production of acids and is present in acid rain is:
- A) Nitrogen
- B) Carbon
- C) Sulfur
- D) Hydrogen
- Answer: C)
Sulfur
15. Which non-metal is used as a disinfectant and bleaching agent?
- A) Bromine
- B) Fluorine
- C) Chlorine
- D) Iodine
- Answer: C)
Chlorine
16. Non-metals are generally found in which state of matter at room temperature?
- A) Solid
- B) Liquid
- C) Gas
- D) Plasma
- Answer: C)
Gas
17. The non-metal that forms strong covalent bonds and is essential for organic chemistry is:
- A) Nitrogen
- B) Oxygen
- C) Carbon
- D) Hydrogen
- Answer: C)
Carbon
18. Non-metals are often used as insulators in electrical devices due to their:
- A) Low melting point
- B) High melting point
- C) Poor conductivity
- D) High ductility
- Answer: C)
Poor conductivity
19. The non-metal that is a major component of the Earth's atmosphere and is essential for life is:
- A) Nitrogen
- B) Carbon
- C) Oxygen
- D) Hydrogen
- Answer: A)
Nitrogen
20. Which non-metal is used in the production of fertilizers and explosives?
- A) Sulfur
- B) Fluorine
- C) Bromine
- D) Iodine
- Answer: A)
Sulfur
Multiple-choice questions (MCQs) with answers on metals and non-metals that are commonly asked in exams like NTSE (National Talent Search Examination):
Type D
Metals and Non-metals MCQs:
1. Which metal is liquid at room temperature?
- A) Iron
- B) Aluminum
- C) Mercury
- D) Copper
- Answer: C)
Mercury
2. Which non-metal is present in all acids?
- A) Carbon
- B) Hydrogen
- C) Oxygen
- D) Nitrogen
- Answer: B)
Hydrogen
3. Which property of metals allows them to be drawn into wires?
- A) Malleability
- B) Conductivity
- C) Luster
- D) Opacity
- Answer: A)
Malleability
4. Which non-metal is a major constituent of the Earth's atmosphere?
- A) Carbon
- B) Nitrogen
- C) Oxygen
- D) Sulfur
- Answer: B)
Nitrogen
5. Which metal is used for making galvanized iron?
- A) Zinc
- B) Copper
- C) Aluminum
- D) Lead
- Answer: A)
Zinc
6. Which non-metal is used in making gunpowder?
- A) Carbon
- B) Sulfur
- C) Oxygen
- D) Nitrogen
- Answer: B)
Sulfur
7. Which property of non-metals makes them poor conductors of electricity?
- A) Luster
- B) Malleability
- C) Ductility
- D) Electrical conductivity
- Answer: D)
Electrical conductivity
8. Which metal is known for its resistance to corrosion and is used in making aircraft bodies?
- A) Iron
- B) Aluminum
- C) Silver
- D) Gold
- Answer: B)
Aluminum
9. Which non-metal is essential for combustion and respiration processes?
- A) Carbon
- B) Nitrogen
- C) Oxygen
- D) Hydrogen
- Answer: C)
Oxygen
10. Which property of metals allows them to reflect light?
- A) Malleability
- B) Luster
- C) Conductivity
- D) Density
- Answer: B)
Luster
These questions cover various aspects of metals and non-metals, including their properties, uses, and significance in everyday life and industrial applications. They are designed to test fundamental knowledge of these materials as commonly assessed in competitive exams like NTSE.
Metals MCQs:
1. Which metal is known as the "King of Metals"?
- A) Gold
- B) Silver
- C) Platinum
- D) Copper
- Answer: A)
Gold
2. Which metal is used in galvanization to coat iron to prevent rusting?
- A) Zinc
- B) Aluminum
- C) Nickel
- D) Tin
- Answer: A)
Zinc
3. The metal which is the best conductor of electricity?
- A) Copper
- B) Aluminum
- C) Silver
- D) Iron
- Answer: C)
Silver
4. The metal which is alloyed with tin to make pewter?
- A) Lead
- B) Copper
- C) Zinc
- D) Aluminum
- Answer: A)
Lead
5. Which metal is essential for the production of stainless steel?
- A) Chromium
- B) Nickel
- C) Titanium
- D) Cobalt
- Answer: A)
Chromium
6. Which metal is used as a catalyst in the hydrogenation of vegetable oils?
- A) Platinum
- B) Palladium
- C) Rhodium
- D) Iron
- Answer: B)
Palladium
7. Which metal is commonly used in electrical wiring due to its high conductivity and affordability?
- A) Aluminum
- B) Copper
- C) Silver
- D) Gold
- Answer: B)
Copper
8. Which metal is used in the manufacture of lead-acid batteries?
- A) Iron
- B) Zinc
- C) Lead
- D) Nickel
- Answer: C)
Lead
9. Which metal is found in its pure state as nuggets or grains in riverbeds and sedimentary deposits?
- A) Silver
- B) Gold
- C) Platinum
- D) Copper
- Answer: B)
Gold
10. Which metal is added to steel to increase its hardness and wear resistance?
- A) Aluminum
- B) Manganese
- C) Tin
- D) Magnesium
- Answer: B)
Manganese
11. Which metal is used in the production of magnets?
- A) Iron
- B) Copper
- C) Zinc
- D) Nickel
- Answer: D)
Nickel
12. Which metal is used in making coinage due to its durability and resistance to corrosion?
- A) Copper
- B) Zinc
- C) Nickel
- D) Aluminum
- Answer: A)
Copper
13. Which metal is commonly used in the aerospace industry due to its lightweight and high strength-to-weight ratio?
- A) Iron
- B) Lead
- C) Titanium
- D) Platinum
- Answer: C)
Titanium
14. Which metal is used in the catalytic converters of automobiles to reduce emissions?
- A) Palladium
- B) Silver
- C) Gold
- D) Rhodium
- Answer: D)
Rhodium
15. Which metal is used in the filament of incandescent light bulbs due to its high melting point?
- A) Tungsten
- B) Aluminum
- C) Silver
- D) Platinum
- Answer: A)
Tungsten
16. Which metal is commonly used in the production of pipes and plumbing fixtures due to its resistance to corrosion?
- A) Copper
- B) Zinc
- C) Aluminum
- D) Lead
- Answer: A)
Copper
17. Which metal is used in the production of nuclear reactors due to its ability to absorb neutrons?
- A) Uranium
- B) Thorium
- C) Plutonium
- D) Beryllium
- Answer: A)
Uranium
18. Which metal is used in the production of mirrors due to its reflective properties?
- A) Silver
- B) Aluminum
- C) Gold
- D) Chromium
- Answer: A)
Silver
19. Which metal is used in the manufacture of stainless steel along with iron and chromium?
- A) Nickel
- B) Zinc
- C) Cobalt
- D) Molybdenum
- Answer: A)
Nickel
20. Which metal is known for its superconducting properties at extremely low temperatures?
- A) Copper
- B) Aluminum
- C) Lead
- D) Mercury
- Answer: D)
Mercury
These questions cover a range of metals, their properties, uses, and significance in various industries, providing a comprehensive review suitable for NTSE exam preparation.
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