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