Ncert – class 6- science – Chapter 2: Sorting Materials and Groups Welcome to your Ncert - class 6- science - Chapter 2: Sorting Materials and Groups 1. You are provided with the following four materials like wood, plastic, wool, and steel. Which of the given material will you identify as hardest and softest respectively? Steel and wool Plastic and steel Wool and steel Wood and wool None 2. Iron, copper and gold appear different but still have similarities". This statement is justified by which of the following statements? They are metallic and lustrous. None 3. What is the criterion for choosing a material to make an object? Purpose of the object only Both properties of the material and purpose of the object Properties of the material only Nature and colour of the material only None 4. A vendor sells white powdered salt mixed with white powdered stone. The knowledge of which property will help you detect this malpractice? Solubility Opacity Ductility Density None 5. Which of the following substances are not types of raw material? Soil, leather, metal Glass, cotton, steel Wood, paper, plastic Books, belt, newspaper None 6. Translucent substance __________. does not allow the light to pass through it allows light to pass through it partially None of these allows light to pass through it completely None 7. Why metals lose their shine over a period of time? Because of being kept covered Because of air and moisture Because of the action of pollens in the air Because of coming in contact with other metals None 8. Light cannot pass through a cardboard. What kind of object is it? Opaque Woody Hard Translucent None 9. What do you call a substance through which things are partially visible? Transparent object Lustrous object Opaque object Translucent object None 10. Which of the following is lustrous? Plastic chair Steel furniture Wooden furniture Football None 11. Name two transparent materials. Plastic and cold wax Plastic and glass Water and honey Glass and wood None 12. Select the objects which are opaque. soil, sand and dust marvel, oiled paper and magnet glass, grass and gum water, oil and soil None 13. Cart, wheels and plough these materials are made up of : wood metal plastic None of these None 14. A few substances are arranged in order of increasing force of attraction between their particles. Which one of the following represents a correct arrangement? Milk, Sugar, Air Air, Milk, Sugar Air, Sugar, Milk Sugar, Milk, Air None 15. Which of the following properties of materials is not considered during classification? Solubility Transparency Mass Conductivity None 16. Most rubber bands and tyres are made of rubber. This is because rubber is: elastic and strong cheap naturally available an electrical insulator None 17. During the formation of rain, when water vapour changes back to liquid in the form of rain drops: heat is first absorbed and then released heat is absorbed there is no exchange of heat heat is released None 18. Which of the following type of bodies form sharp shadows when placed in the path of light? Transparent Both A and B Translucent Opaque None 19. Which of the following objects are generally made from leather? Belts All of the above Bags Shoes None 20. How many of the following are soluble in water?salt, sugar, sand, dust 4 3 1 2 None Time's up Please Share This Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Leave a Reply Cancel replyCommentEnter your name or username to commentEnter your email address to commentEnter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.
