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Question 1: In a reaction, 5.3 g of sodium carbonate reacted with 6 g of acetic acid. The products were 2.2 g of carbon dioxide, 0.9 g of water, and 8.2 g of sodium acetate. Show that these observations are in agreement with the law of conservation of mass. Answer: Total mass of reactants: Mass … Read more
In-Text Questions and Answers What are canal rays? Answer: Canal rays are streams of positively charged particles discovered by E. Goldstein. They are also known as anode rays. These rays are produced in a gas discharge tube and move in a direction opposite to that of electrons. If an atom contains one electron and one … Read more
1) Can you think of the ways in which social customs and practices were discussed in the pre-printing age when books, newspapers, and pamphlets were not readily available? Answer: Before printing was common, people shared ideas through oral communication. They held meetings, gatherings, and discussions in places like temples, marketplaces, and homes. Stories, songs, and … Read more
Match the following: William Jones – Respect for ancient cultures Rabindranath Tagore – Learning in a natural environment Thomas Macaulay – Promotion of English education Mahatma Gandhi – Critical of English education Pathshalas – Gurus 2. True or False: (a) True – James Mill was a strong critic of the Orientalists and wanted practical education. … Read more
In-text Questions 1. Why 82°30’E has been selected as the Standard Meridian of India? India is a large country, with a time lag of two hours from the easternmost point to the westernmost point. To avoid confusion, 82°30’E longitude, which passes through Mirzapur in Uttar Pradesh, is chosen as the Standard Meridian of India because … Read more
Question 1: Use the terms ‘constituency’ and ‘represent’ to explain who an MLA is and how the person gets elected. Answer: An MLA is a person elected by the people of a constituency to represent them in the state Legislative Assembly. The state is divided into constituencies, and people vote for their representative. The candidate … Read more
1. Describe the circumstances leading to the outbreak of revolutionary protest in France. Answer:The French Revolution started because the common people were heavily taxed while the clergy and nobility enjoyed privileges. France’s debt from wars and the monarchy’s lavish spending worsened the economy, causing food shortages and high bread prices. The spread of ideas about … Read more
1. Choose the right answer from the four alternatives given below. (i) A landmass bounded by sea on three sides is referred to as: (a) Coast (b) Island (c) Peninsula (d) None of the above Answer: (c) Peninsula (ii) Mountain ranges in the eastern part of India forming its boundary with Myanmar are collectively called: … Read more
1. What was the demand of Rani Lakshmibai of Jhansi that was refused by the British? Answer: Rani Lakshmibai wanted the British to recognize her adopted son as the rightful heir to Jhansi after her husband’s death. The British, under the Doctrine of Lapse, refused and annexed the kingdom. 2. What did the British do … Read more
Which ruler first established his or her capital at Delhi? Answer: The Tomara Rajputs were the first rulers to establish their capital at Delhi. What was the language of administration under the Delhi Sultans? Answer: The language of administration under the Delhi Sultans was Persian. In whose reign did the Sultanate reach its farthest extent? … Read more