Metal MCQ Quiz in मल्याळम - Objective Question with Answer for Metal - സൗജന്യ PDF ഡൗൺലോഡ് ചെയ്യുക

Last updated on Apr 4, 2025

നേടുക Metal ഉത്തരങ്ങളും വിശദമായ പരിഹാരങ്ങളുമുള്ള മൾട്ടിപ്പിൾ ചോയ്സ് ചോദ്യങ്ങൾ (MCQ ക്വിസ്). ഇവ സൗജന്യമായി ഡൗൺലോഡ് ചെയ്യുക Metal MCQ ക്വിസ് പിഡിഎഫ്, ബാങ്കിംഗ്, എസ്എസ്‌സി, റെയിൽവേ, യുപിഎസ്‌സി, സ്റ്റേറ്റ് പിഎസ്‌സി തുടങ്ങിയ നിങ്ങളുടെ വരാനിരിക്കുന്ന പരീക്ഷകൾക്കായി തയ്യാറെടുക്കുക

Latest Metal MCQ Objective Questions

Top Metal MCQ Objective Questions

Metal Question 1:

What is the name of the alloy which is obtained after mixing mercury with another metal ?

  1. Solder 
  2. Amalgam 
  3. Duralumin 
  4. Pewter

Answer (Detailed Solution Below)

Option 2 : Amalgam 

Metal Question 1 Detailed Solution

The correct answer is Amalgam.

Key Points

  • An amalgam is an alloy of mercury with one or more other metals.
  • These alloys are formed through the process of amalgamation, where mercury reacts with other metals.
  • Amalgams are commonly used in dental fillings due to their durability and ease of application.
  • They are also used in the extraction of precious metals like gold and silver from their ores.
  • The use of amalgams dates back to ancient times and has been pivotal in various industrial applications.

 Additional Information

  • Solder
    • Solder is a fusible metal alloy used to join metal workpieces together.
    • It typically consists of a combination of tin and lead, although other metals can be used.
    • Solder is widely used in electronics to create strong, conductive joints.
  • Duralumin
    • Duralumin is an alloy primarily composed of aluminum and copper, with small amounts of manganese, magnesium, and iron.
    • It is known for its lightweight and high strength, making it ideal for aerospace applications.
  • Pewter
    • Pewter is a malleable metal alloy, traditionally composed of tin with copper, antimony, and sometimes bismuth.
    • It has been used for tableware and decorative objects for centuries.

Metal Question 2:

Which of the following statements about the reaction of a non-metallic oxide with a base is/are correct?

Statement I: The reaction of non-metallic oxide with base produces salt and water.

Statement II: Non-metallic oxides are acidic in nature.  

  1. Neither statement I nor II is correct. 
  2. Only statement I is correct.  
  3. Both statements I and II are correct. 
  4. Only statement II is correct. 

Answer (Detailed Solution Below)

Option 3 : Both statements I and II are correct. 

Metal Question 2 Detailed Solution

The correct answer is 3) Both statements I and II are correct.

Key Points

  • Non-metallic oxides such as CO₂ and SO₂ react with bases to form salt and water, demonstrating their acidic nature.
  • Statement I is correct as it describes the neutralization reaction between a non-metallic oxide and a base.
  • Statement II is correct as non-metallic oxides are indeed acidic in nature, meaning they react with bases.
  • Examples include CO₂ reacting with NaOH to form Na₂CO₃ (sodium carbonate) and water.

Additional Information

  • Acid-Base Reactions:
    • Acid-base reactions involve the transfer of protons (H⁺) from the acid to the base.
    • These reactions result in the formation of water and a salt.
  • Examples of Non-Metallic Oxides:
    • Carbon dioxide (CO₂), sulfur dioxide (SO₂), and nitrogen dioxide (NO₂) are common non-metallic oxides.
    • These oxides typically react with water to form acids.
  • Neutralization Reactions:
    • In a neutralization reaction, an acid and a base react to form water and a salt.
    • This type of reaction is essential in various industrial and biological processes.
  • Properties of Acids and Bases:
    • Acids have a sour taste and can turn blue litmus paper red.
    • Bases have a bitter taste and can turn red litmus paper blue.

Metal Question 3:

Which among the following is a non-metallic element?

  1. Rubidium
  2. Nitrogen
  3. Copper
  4. Silver

Answer (Detailed Solution Below)

Option 2 : Nitrogen

Metal Question 3 Detailed Solution

The correct answer is Nitrogen.

Key Points

  • Nitrogen is a non-metallic element and is represented by the symbol N.
  • It is the most abundant gas in Earth's atmosphere, making up approximately 78% of the air by volume.
  • Nitrogen belongs to Group 15 (the Nitrogen family) in the periodic table and exhibits non-metallic properties due to its high electronegativity and inability to conduct electricity.
  • It is essential for life, playing a critical role in the formation of amino acids, proteins, and nucleic acids in living organisms.
  • Unlike metals, nitrogen does not possess metallic luster, is brittle in its solid form, and does not conduct heat or electricity.

Additional Information

  • Non-metals:
    • Non-metals are elements that generally lack metallic properties like ductility, malleability, and electrical conductivity.
    • Examples of non-metals include oxygen, nitrogen, carbon, sulfur, and phosphorus.
    • They are usually poor conductors of heat and electricity and are often found in gaseous, liquid, or brittle solid forms.
  • Metallic Elements:
    • Metals like rubidium, copper, and silver (mentioned in the options) are excellent conductors of heat and electricity.
    • These elements are malleable, ductile, and possess metallic luster.
  • Nitrogen Cycle:
    • Nitrogen is a key component of the nitrogen cycle, which involves processes like nitrogen fixation, nitrification, and denitrification.
    • These processes ensure the availability of nitrogen in forms usable by plants and animals.
  • Group 15 Elements:
    • Group 15 elements in the periodic table are also called the Nitrogen family and include nitrogen, phosphorus, arsenic, antimony, and bismuth.
    • Non-metals dominate the top of the group, while metallic characteristics increase as you move down the group.

Metal Question 4:

Which one of the following metals does not react with cold as well as hot water?

  1. Sodium
  2. Calcium
  3. Magnesium
  4. Iron

Answer (Detailed Solution Below)

Option 4 : Iron

Metal Question 4 Detailed Solution

The correct answer is Iron.

Key Points

  • Iron does not react with cold or hot water because it is relatively less reactive compared to other metals like sodium, calcium, and magnesium.
  • Iron reacts only with steam at high temperatures, forming iron oxide (Fe3O4) and releasing hydrogen gas.
  • Metals like sodium and calcium are highly reactive and readily react with cold water, producing hydrogen gas and metal hydroxides.
  • Magnesium reacts with hot water slowly but does not react with cold water significantly.
  • Iron's low reactivity with water makes it suitable for many applications, including construction and manufacturing industries.

Additional Information

  • Reactivity Series: Metals are arranged based on their reactivity, with potassium and sodium at the top and gold at the bottom. Iron is placed below magnesium in the series, indicating its lower reactivity.
  • Reaction of Metals with Water: Highly reactive metals like sodium and potassium react explosively with water, while less reactive metals like iron require higher temperatures (steam) for reaction.
  • Iron Oxides: Iron reacts with oxygen and steam to form iron oxides, such as Fe3O4 (magnetite), which are used in industrial processes.
  • Applications of Iron: Due to its stability and resistance to water, iron is widely used in construction, transportation, and manufacturing tools and machinery.
  • Steam Reaction: When iron reacts with steam, the chemical equation is: 3Fe + 4H2O → Fe3O4 + 4H2, showcasing its limited reactivity under specific conditions.

Metal Question 5:

Which of the following metals does NOT react with cold water? 

  1. Potassium 
  2. Sodium 
  3. Calcium 
  4. Magnesium 

Answer (Detailed Solution Below)

Option 4 : Magnesium 

Metal Question 5 Detailed Solution

The correct answer is Magnesium.

Key Points

  • Magnesium is a metal that does not react with cold water.
  • It only reacts with hot water or steam to produce magnesium hydroxide and hydrogen gas.
  • The reaction of magnesium with water is much slower compared to other metals like potassium, sodium, and calcium.
  • Magnesium forms a protective layer of magnesium hydroxide on its surface, which prevents further reaction with water.
  • This characteristic makes magnesium less reactive with cold water.

 Additional Information

  • Potassium
    • Potassium reacts very vigorously with cold water, producing potassium hydroxide and hydrogen gas.
    • The reaction is exothermic and can ignite the hydrogen gas produced.
  • Sodium
    • Sodium also reacts vigorously with cold water, forming sodium hydroxide and hydrogen gas.
    • Similar to potassium, the reaction is exothermic and can ignite the hydrogen gas.
  • Calcium
    • Calcium reacts with cold water to produce calcium hydroxide and hydrogen gas, but the reaction is less vigorous compared to potassium and sodium.

Metal Question 6:

When a metal and sulphuric acid react with each other, metal displaces hydrogen, which is higher in the reactivity series. Identify the metal for which the bubbling of hydrogen gas will be the fastest. 

  1. Magnesium
  2. Iron
  3. Aluminium
  4. Zinc

Answer (Detailed Solution Below)

Option 1 : Magnesium

Metal Question 6 Detailed Solution

The correct answer is Magnesium.

Key Points

  • Magnesium is higher in the reactivity series compared to Iron, Aluminium, and Zinc.
  • When magnesium reacts with sulphuric acid, it displaces hydrogen gas rapidly due to its high reactivity.
  • The reactivity series of metals places magnesium above zinc, iron, and aluminium, making it more reactive.
  • Hydrogen gas bubbles will form at a faster rate when magnesium is used in the reaction with sulphuric acid.

Additional Information

  • Reactivity Series: The reactivity series is a list of metals arranged in order of decreasing reactivity to displace hydrogen from acids and water.
  • Hydrogen Displacement: Metals higher in the reactivity series can displace hydrogen gas from acids faster than those lower in the series.
  • Magnesium (Mg): A lightweight, silvery metal that reacts vigorously with acids to produce hydrogen gas.
  • Sulphuric Acid (H2SO4): A strong acid commonly used in chemical reactions to test the reactivity of metals.
  • Safety Precautions: When performing reactions with acids, appropriate safety measures like wearing gloves and goggles should be taken to prevent harm.

Metal Question 7:

Which metal is placed at the top of the reactivity series?

  1. Copper
  2. Iron
  3. Silver
  4. Potassium 

Answer (Detailed Solution Below)

Option 4 : Potassium 

Metal Question 7 Detailed Solution

The Correct answer is Potassium.

Key Points

  • Potassium is the most reactive metal in the reactivity series.
  • It is placed at the top because of its high reactivity with oxygen, water, and acids.
  • Potassium reacts vigorously with water to form potassium hydroxide and hydrogen gas.
  • This metal is stored under oil to prevent it from reacting with moisture in the air.
  • Potassium is used in fertilizers, soaps, and detergents due to its high reactivity.
  • It is also essential for plant growth, playing a key role in the functioning of plant cells.

 Additional Information

  • Copper
    • Copper is a less reactive metal compared to potassium.
    • It is widely used in electrical wiring and electronics due to its high electrical conductivity.
    • Copper is also used in plumbing and roofing materials.
  • Iron
    • Iron is more reactive than copper but less reactive than potassium.
    • It is a major component in steel production.
    • Iron is used in construction, transportation, and various industrial applications.
  • Silver
    • Silver is one of the least reactive metals.
    • It is highly valued for its conductivity and is used in jewelry and currency.
    • Silver has various industrial applications, including in photography and electronics.

Metal Question 8:

Assertion (A): Metals generally have a lustrous appearance and are good conductors of heat and electricity.
Reason (R): Non-metals lack lustre and are usually poor conductors of heat and electricity.

Choose the correct option:

  1. Both A and R are true, and R is the correct explanation of A
  2. Both A and R are true, but R is not the correct explanation of A
  3. A is true, but R is false
  4. A is false, but R is true

Answer (Detailed Solution Below)

Option 2 : Both A and R are true, but R is not the correct explanation of A

Metal Question 8 Detailed Solution

The correct answer is Both A and R are true, and R is not a correct explanation of A.

Key Points

  • Metals generally possess a lustrous appearance, meaning they are shiny, which is one of their defining physical properties.
  • Metals are known to be excellent conductors of heat and electricity due to the presence of free electrons that move freely through the lattice structure.
  • Non-metals, on the other hand, lack lustre and are typically poor conductors of heat and electricity because they do not have free electrons available for conduction.
  • The Assertion (A) that "Metals generally have a lustrous appearance and are good conductors of heat and electricity" is true.
  • The Reason (R) that "Non-metals lack lustre and are usually poor conductors of heat and electricity" is also true.
  • The relationship between metals and non-metals is based on their atomic structure, which defines their distinct physical and chemical properties.
  • Examples of metals include copper, silver, and gold, which are highly lustrous and conductive. Examples of non-metals include carbon, sulfur, and phosphorus, which are dull and non-conductive.

Additional Information

Properties of metal-

  • high melting points.
  • good conductors of electricity.
  • good conductors of heat.
  • high density.
  • malleability
  • ductility 

Properties of non-metal-

  • non-metals are neither malleable nor ductile; they are brittle.

Metal Question 9:

Select the correct statements from the following.

I. All the metals are same in reactivity.

II. Iron can replace copper from copper sulphate solution.

III. Copper can replace iron from ferrous sulphate solution.

IV. Sodium is too soft to cut with a knife.

  1. Only I, II and IV
  2. Only I and II 
  3. Only II and IV
  4. Only II and III

Answer (Detailed Solution Below)

Option 3 : Only II and IV

Metal Question 9 Detailed Solution

The correct answer is Only II and IV.

Key Points

  • Statement II: Iron can replace copper from copper sulphate solution because iron is more reactive than copper. This is based on the reactivity series of metals.
  • Statement IV: Sodium is a highly reactive alkali metal that is soft and can be easily cut with a knife due to its low density and metallic bonding.
  • Statement I is incorrect: All metals do not have the same reactivity. The reactivity of metals varies and is arranged in the reactivity series.
  • Statement III is incorrect: Copper cannot replace iron from ferrous sulphate solution because copper is less reactive than iron.

Additional Information

  • Reactivity Series: A list of metals arranged in order of their decreasing reactivity. Highly reactive metals like sodium and potassium are at the top, while less reactive metals like gold and silver are at the bottom.
  • Displacement Reaction: A chemical reaction in which a more reactive metal displaces a less reactive metal from its compound (e.g., iron displaces copper from copper sulphate).
  • Properties of Sodium: Sodium is an alkali metal with low melting point and density. It reacts vigorously with water and oxygen, and it is so soft that it can be cut with a knife.
  • Metal Reactivity: Reactivity of a metal determines its ability to lose electrons and form positive ions. Highly reactive metals like alkali metals react easily, while noble metals like gold and platinum are least reactive.
  • Chemical Behavior of Copper: Copper is a less reactive metal and cannot displace more reactive metals such as iron from their compounds.

Metal Question 10:

Sodium metal should be stored in -

  1. Water
  2. the open
  3. Kerosene
  4. Alcohol

Answer (Detailed Solution Below)

Option 3 : Kerosene

Metal Question 10 Detailed Solution

The correct answer is Kerosene.

Key Points

  • Sodium metal is highly reactive and can easily react with water or moisture in the air, producing hydrogen gas and heat, which may lead to explosions.
  • To prevent such reactions, sodium is stored in kerosene, a non-reactive liquid that isolates the metal from air and water.
  • Kerosene acts as a protective medium by creating a physical barrier, ensuring the safe storage of sodium metal.
  • Other storage mediums like water, alcohol, and open air are unsuitable as they react with sodium, causing hazardous chemical reactions.
  • Sodium's reactive nature makes it essential for laboratories and industries to follow strict safety protocols during storage and handling.

Additional Information

  • Reactivity of Sodium:
    • Sodium is an alkali metal belonging to Group 1 of the periodic table, known for its high reactivity.
    • It reacts vigorously with water to produce sodium hydroxide (NaOH) and hydrogen gas (H2), releasing significant heat.
    • Its reactivity increases when exposed to air due to oxidation, forming sodium oxide or sodium hydroxide.
  • Properties of Kerosene:
    • Kerosene is a hydrocarbon liquid commonly used as a fuel and solvent.
    • It is non-reactive with sodium and other alkali metals, making it ideal for storing reactive substances.
    • Kerosene's low volatility and stable nature further ensure safe storage conditions for sodium.
  • Storage and Handling of Reactive Metals:
    • Reactive metals like sodium, potassium, and lithium must be stored in inert or non-reactive substances.
    • Proper labeling, airtight containers, and isolation from flammable materials are critical for safety.
    • Emergency protocols should be in place to address accidental spills or reactions.
  • Applications of Sodium:
    • Sodium is widely used in industries for the production of chemicals like sodium hydroxide and sodium carbonate.
    • It serves as a coolant in nuclear reactors and is used in the manufacture of synthetic rubber.
    • Sodium vapor lamps are employed for street lighting due to their high efficiency and bright light output.
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