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