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Ideas of History ~History Chapter 1 (class 10 wbbse) ( Important Short questions & Notes )

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  MADHYAMIK  HISTORY    SUGGESTION 1) What is science of human society ?  A ns. Sociology is the science of human society.  2) Write the name of biography book written by jawahar lal Nehru ?  Ans. "Letters from a father to his daughter " 3) Who was the author of the book 'Tuzk-i- Babara ' ? Ans. Babar was the author of the book Tuzk i Babara. 4) Who is the author of the book 'Jiban Smrity' ? Ans. Rabindranath Tagore. 5) Who has written the book " Jibaner jharapata" ? Ans. Sarala Devi Chaudhurani 6) Who is the author of Murshidabad kahini ? Ans . Nikhilnath Roy  7) Who is the author of Murshidabad kahim ? Ans. Saratchandra Pandit.  8)Where is Ajanta cave situated ? Ans. Maharashtra  9) Who was the editor of ' Banga Darshan Patrika ' ?  Ans. Bankim Chandra Chatterjee 10) Name a french historian and also the name of one of his book ? Ans. Fernand Braudel - History of Civilization. 8) What do you understand by Social History? Ans. Social history

Thermal Expansion ~ PHYSICAL SCIENCE Chapter 4 (class 10 wbbse) ( Important Short questions & Notes )

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  MADHYAMIK  PHYSICAL SCIENCE    SUGGESTION Thermal Expansion  ~ PHYSICAL SCIENCE  Name the three types of expansion in solid . Ans. The three types of expansion in solid are :  i) linear expansion ii) Surface expansion  iii) Volume expansion  Name a substance which contracts on heating. Ans. The volume of ice decreases on heating. Define the term 'coefficient' of linear expansion. Ans : The coefficient of linear expansion of a solid is the increase in its length per unit length per degree rise of temperature. Give the SI unit of coefficient of linear expansion.  Ans. Unit of alpha  (a) is per degree centigrade (°C -1 ) or S.I unit is per degree kelvin( k -1 ). Is coefficient of linear expansion possible in the case of liquid?  Ans. Liquids have no definite shapes of their own and take the shape of the container in which they are kept. So, the thermal expansion of the liquid is always cubicle. The coefficient of linear expansion of brass is 1.8×10 -5 C -1 . Whatdo you mean by