Chapter 16 Garbage In Garbage Out 1. (a) Which kind of garbage is not converted into compost by the redworms? (b) Have you seen any other organism besides redworms, in your pit? If yes, try to find out their names. Draw pictures of these. Ans: (a) Garbage substances...
Chapter 15 Air Around Us 1. What is the composition of air? Ans: Air is mixture of nitrogen, oxygen, carbon dioxide, water vapour and a few other gases. Some dust particles may also be present in it. 2. Which gas in the atmosphere is essential for respiration?...
Chapter 14 Water 1. Fill up the blanks in the following: (a) The process of changing of water into its vapour is called_______________ . (b) The process of changing water vapour into water is called_____________ . (c) No rainfall for a year or more may lead to...
Chapter 13 Fun with Magnets 1. Fill in the blanks in the following: (i) Artificial magnets are made in different shapes such as_________ ,_______ and (ii) The materials which are attracted towards a magnet are called_________ (iii) Paper is not a________ (iv) In olden...
Chapter 12 Electricity and Circuits 1. Fill in the blanks: (a) A device that is used to break an electric circuit is called_______________ (b) An electric cell has___________ Ans: (a) switch (b) two 2. Mark ‘True’ or ‘False’ for the following statements: (a) Electric...
