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