Ncert – class 6- science – Chapter 2: Sorting Materials and Groups Welcome to your Ncert - class 6- science - Chapter 2: Sorting Materials and Groups 1. Translucent substance __________. allows light to pass through it partially None of these does not allow the light to pass through it allows light to pass through it completely None 2. Which of the following objects are generally made from leather? Bags Belts All of the above Shoes None 3. Which of the following is lustrous? Football Wooden furniture Steel furniture Plastic chair None 4. 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 5. 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 6. Why metals lose their shine over a period of time? Because of air and moisture Because of being kept covered Because of the action of pollens in the air Because of coming in contact with other metals None 7. What do you call a substance through which things are partially visible? Lustrous object Translucent object Transparent object Opaque object None 8. Which of the following properties of materials is not considered during classification? Solubility Transparency Mass Conductivity None 9. Select the objects which are opaque. glass, grass and gum marvel, oiled paper and magnet soil, sand and dust water, oil and soil None 10. Cart, wheels and plough these materials are made up of : metal plastic wood None of these None 11. Name two transparent materials. Plastic and glass Water and honey Plastic and cold wax Glass and wood None 12. How many of the following are soluble in water?salt, sugar, sand, dust 4 3 1 2 None 13. 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 14. 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 15. 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 Plastic and steel Wool and steel Steel and wool None 16. Which of the following type of bodies form sharp shadows when placed in the path of light? Both A and B Translucent Opaque Transparent None 17. 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 first absorbed and then released heat is released None 18. Which of the following substances are not types of raw material? Soil, leather, metal Wood, paper, plastic Books, belt, newspaper Glass, cotton, steel None 19. Light cannot pass through a cardboard. What kind of object is it? Opaque Woody Translucent Hard None 20. Most rubber bands and tyres are made of rubber. This is because rubber is: elastic and strong naturally available cheap an electrical insulator 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.
