7 Most VSAQ’s of Principles of Metallurgy Chapter in Class 10th Physical Science (TS/AP)

2 Marks

VSAQ-1 : What would happen, if the metals like copper and iron do not get oxidized? Guess and write.

Consequence of Non-Oxidation:

  1. Challenge in Detection: Without oxidation, identifying copper and iron ions in experiments would become challenging.
  2. Impact on Applications: Various applications and analyses that depend on redox reactions involving these metals would be significantly affected.

VSAQ-2 : What are the essential conditions that iron articles get rust?

Essential Conditions for Rusting of Iron Articles

  1. Presence of Water: Moisture or water is crucial for the rusting process.
  2. Oxygen from Air: Oxygen in the air reacts with iron in the presence of water to form rust.

VSAQ-3 : What are the preventive methods do you take for rusting of iron materials?

Preventive Measures for Rusting of Iron Materials

  1. Painting:
    • Objective: Create a barrier between the metal and the environment.
    • Method: Apply protective paint or coating on the iron surface to prevent exposure to moisture and oxygen.
  2. Electroplating:
    • Objective: Add a layer of protection to the iron.
    • Method: Coat iron materials with non-rusting metals like tin or zinc through electroplating to inhibit rust.
  3. Oiling and Greasing:
    • Objective: Protect the iron surface from environmental elements.
    • Method: Regular application of oils or greases to form a protective film, blocking moisture and oxygen contact.

VSAQ-4 : List three metals that are found in nature in uncombined form.

Metals Found in Nature in Uncombined Form

  1. Gold (Au): Naturally occurs in its pure, elemental state.
  2. Silver (Ag): Found in native form, not combined with other elements.
  3. Copper (Cu): Exists in nature as a free metal.

VSAQ-5 : What is activity series? How it helps in extraction of metals?

What is Activity Series?

  1. Definition: The activity series is a list of metals arranged according to their reactivity, from most reactive to least reactive.
  2. Function: It indicates how readily each metal can undergo oxidation (lose electrons).

Role in Metal Extraction

  1. Guide for Extraction Methods: The series helps determine the most effective extraction method for a metal, based on its position in the series.
  2. Reactivity Consideration: Metals higher in the series are more reactive and can displace less reactive metals from their compounds.
  3. Selection of Reducing Agents: The reactivity of a metal guides the choice of reducing agents in processes like smelting or chemical reduction.

VSAQ-6 : What are minerals?

  1. Naturally Occurring: Minerals are substances that occur naturally in the Earth’s crust.
  2. Inorganic Origin: They are inorganic, meaning they are not formed by living organisms.
  3. Composition: Minerals can be single elements or compounds.
  4. Structure: They often possess a distinct crystalline structure.
  5. Example: Iron (Fe) is an example of a mineral that is a metal found in various forms in the Earth’s crust.

VSAQ-7 : What is refining of metal?

Refining of Metal

  1. Process Description: Refining of metal is the process of purifying an impure metal.
  2. Objective: Aimed at obtaining a pure and high-quality metal with minimal impurities.
  3. Techniques Used: Various techniques are employed, such as electrolysis, fractional crystallization, or chemical processes.
  4. Purpose: The goal is to remove unwanted substances and achieve the desired purity level for the final metal product.