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Sorting Materials into Groups (HBBVS)

Class 6th Classification of materials

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

What is annealing of iron?

  1. Breaking an iron rod
  2. Repeatedly heating and cooling an iron rod to increase strength
  3. Coating an iron rod with another metal
  4. Rusting of iron due to water
  5. NA
Question 2 Multiple Choice (Single Answer)

Which of the following materials is sonorous?

  1. Plastic
  2. Steel
  3. Wood
  4. Coal
  5. NA
Question 3 Multiple Choice (Single Answer)

What happens when a paper is oiled?

  1. The paper will become translucent.
  2. The paper will become opaque.
  3. It will become transparent.
  4. The paper will melt.
  5. NA
Question 4 Multiple Choice (Single Answer)

Why are non-ferrous metals not used as structural materials?

  1. They can't be drawn onto planks.
  2. They are not sonorous.
  3. They lack mechanical strength.
  4. They are non-metals.
  5. NA
Question 5 Multiple Choice (Single Answer)

What is the unit of density?

  1. Kilogram per metre cube
  2. Gram per metre cube
  3. Centimetre per kilogram cube
  4. Metre per kilogram square
  5. NA
Question 6 Multiple Choice (Single Answer)

Sam heard the school bell and went to see the same. He was surprised to find a metal gong and a striker hammer in the bell. He asked his friend the reason for the same.

Which of the following is the correct reason for the metal gong to be used?

  1. Metal gong is cheap.
  2. Metals are highly sonorous.
  3. Both (A) and (B)
  4. None of these
  5. NA
Question 7 Multiple Choice (Single Answer)

Choose the odd one out.

  1. Stone
  2. Cardboard
  3. Oiled sheet
  4. Spoon
  5. NA
Question 8 Multiple Choice (Single Answer)

Which of the following is insoluble in water?

  1. Oxygen
  2. Salt
  3. Saw dust
  4. Copper sulphate
  5. NA
Question 9 Multiple Choice (Single Answer)

Amit takes one table spoon of salt and another table spoon of chalk powder. He takes a glass of water and dissolves them both in the same.

In the above situation, what shall be observed in the glass from the following?

  1. Both chalk powder and salt will be completely dissolved making the water milky.
  2. Chalk powder will first float, then settle down at the bottom and the salt will be fully dissolved.
  3. Both salt and chalk powder will be undissolved.
  4. Chalk powder will completely dissolve and salt will remain undissolved on the surface.
  5. NA
Question 10 Multiple Choice (Single Answer)

Which one of the following is the other name of corrosion?

  1. Galvanisation
  2. Iron oxidation
  3. Casting of iron
  4. None of these
  5. NA
Question 11 Multiple Choice (Single Answer)

Materials made by two or more materials are known as

  1. Composite materials
  2. Alloys
  3. Saturated materials
  4. Unsaturated materials
  5. NA
Question 12 Multiple Choice (Single Answer)

Amit plans to build an airplane. Which of the following is the best choice of material?

  1. Iron
  2. Aluminium
  3. Cardboard
  4. Steel sheet
  5. NA
Question 13 Multiple Choice (Single Answer)

Which of the following are buoyant materials?

  1. Wooden cork
  2. Glass
  3. Iron nail
  4. Aluminium ball
  5. NA
Question 14 Multiple Choice (Single Answer)

Which of the following are electrically conductive materials?

  1. Copper
  2. Glass
  3. Cork
  4. Sillicon
  5. NA
Question 15 Multiple Choice (Single Answer)

Which of the following are heat conducting materials?

  1. Wood
  2. Glass
  3. Steel
  4. Cork
  5. NA
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