Quiz Class 8th Science 06-05-2026

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Quiz Class 8th Science 06-05-2026

Total 5 Question Included in this quiz

1 / 5

Which of the following is a good conductor of electricity?

(निम्नलिखित में से कौन विद्युत का सुचालक है?)

2 / 5

LED stands for?

(LED का पूर्ण रूप क्या है?)

3 / 5

Pure or distilled water is?

(शुद्ध या आसुत जल होता है?)

4 / 5

When an electric current is passed through acidified water, which gas is formed at the positive terminal (Anode)?

(जब अम्लीकृत जल से विद्युत धारा प्रवाहित की जाती है, तो धनात्मक टर्मिनल (एनोड) पर कौन सी गैस बनती है?)

5 / 5

The process of depositing a layer of any desired metal on another material by means of electricity is called?

(विद्युत द्वारा किसी पदार्थ पर किसी वांछित धातु की परत निक्षेपित करने की प्रक्रिया कहलाती है?)

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Do You Know

Q1. Copper

explanation:

  1. Materials are classified as conductors and insulators.
  2. Conductors allow electric current to pass through them easily.
  3. Metals like copper, aluminium have free electrons that carry current.
  4. Rubber, plastic, and wood do not allow current to pass easily (they are insulators).

Conclusion:
Copper is a good conductor of electricity.

Q2. Poor conductor

explanation:

  1. Pure (distilled) water does not contain dissolved salts or minerals.
  2. Electric current flows through water only when ions (charged particles) are present.
  3. Since distilled water has almost no ions, it cannot conduct electricity well.
  4. Normal tap water conducts electricity because it contains dissolved impurities.

Conclusion:
Pure/distilled water is a poor conductor.

Q3. Electroplating

explanation:

  1. When electric current is passed through a solution, chemical changes can occur.
  2. In Electroplating, a thin layer of one metal is deposited on another material.
  3. This is done to improve appearance, strength, or prevent rusting.
  4. Example: Gold plating on jewellery, chromium plating on taps.

Conclusion:
This process is called Electroplating.

Q4. Light Emitting Diode

explanation:

  1. LED is an electronic component.
  2. When electric current passes through it, it emits light.
  3. It uses very low energy and lasts longer than bulbs.
  4. LEDs are commonly used in TVs, indicators, and decorative lights.

Conclusion:
LED stands for Light Emitting Diode.

Q5. Oxygen

explanation:

  1. Passing electricity through acidified water causes Electrolysis of water.
  2. Water splits into two gases: Hydrogen (H₂) and Oxygen (O₂).
  3. At the cathode (negative terminal) → Hydrogen gas is formed.
  4. At the anode (positive terminal) → Oxygen gas is formed.

Conclusion:
Gas formed at the positive terminal (anode) is Oxygen.

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2 thoughts on “Quiz Class 8th Science 06-05-2026”

    1. Mahesh baghel
      Mahesh baghel

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