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