CBSE ADDA

Properties of Alkanes/ Alkenes/ Alkynes   (10 th Carbon and its compounds) Properties of Alkanes/ Alkenes/ Alkynes (a) Alkanes are gas (C 1 to C 4 ) ; liquid (C 5 to C 17 ) and rest are solid at room temperature. (b) The melting and boiling point of Alkanes increases with increase in number of C – atom in Alkanes. Alkane Formula Boiling point [°C] Melting point [°C] State (at 20 °C) Methane CH 4 -162 -182 gas Ethane C 2 H 6 -89 -183 gas Propane C 3 H 8 -42 -188 gas Butane C 4 H 10 0 -138 gas Pentane C 5 H 12 36 -130 liquid Hexane C 6 H 14 69 -95 liquid Heptane C 7 H 16 98 -91 liquid Octane C 8 H 18 126

 Supplementary Reading Material in Economics Part A: Introductory Microeconomics (Effective from March 2014 Examination)   -    English  |    Hindi Part B: Introductory Macroeconomics (Effective from March 2014 Examination)   -    English   |    Hindi Supplementary Material for Senior Secondary Biology   Gulliver’s Travels Novel Novel: Three Men in a Boat Language Skills Book – Functional English Class XI : Unit 1 and Unit 2 Literature Reader – Functional English Class XI : Unit 1 and Unit 2 Courtesy: CBSE ,  http://www.cbseacademic.in/

Class : 10th (History)    Chapter _The Rise of Nationalism in Europe Q.1 Define Nation: Ans: A ‘Nation’ has thus been defined as “a body of people who feel themselves to be actually linked together by certain affinities which are so strong and real from them that they can live happily together, are dissatisfied when disunited and cannot tolerate subjection of peoples who do not share these ideas.” Q.2 What do you mean by nationalism? Ans: The words ‘nation’ and ‘nationality’ are derived from the Latin word ‘Natus’ which means a ‘race’. Devotion, love, and patriotic feelings for one’s own nation is called ‘Nationalism’. It is a feeling of political consciousness and unity among the people of a state. Q.3 What is the main contribution of the French Revolution to the world? Ans: The French Revolution led to the transfer of sovereignty from the monarchy to a body of citizens. It proclaimed that it was the people who would henceforth constitute the nation and shap