Q-3)Fill in the blanks: 1) Jana Gana Mana was first sung on 27 th December, 1911 in Kolkata. 2) The original national anthem had 5 stanzas. 3) A wheel with 24 spokes is called the Dharma chakra. 4) The Widest tree in the world i.e. The Great Banyan tree is located in Kolkata. 5) The Saka calendar was adopted as the national calendar of India on March 22 nd 1957. 6) Bankimchandra Chatterji composed the Vande Matram . 7) Shravan is the fifth month of the Saka calendar. 8) Phalgun is the last month of the Saka calendar and it has 30 days. 9) We get energy from the food we eat. 10)The process of making food by the plants using sunlight is called photosynthesis. 11) Wind energy is used by windmills to produce electrical energy. 12) Bees buzz and butterflies flutter because of energy. 13) The word energy comes from the Greek...