X Class 10 NCERT Activity Explanation Class 10 Metals and Non Metals Activity 3.1 Page No. 37 Take samples of iron, copper, aluminium and magnesium. Note the appearance of each sample. They have a shining surface. Clean the surface of each sample by rubbing them with sand paper and note their appearance again. They become more shiny. => Freshly cut Metal have shiny surface Activity 3.2 Page No. 37 Take small pieces of iron, copper, aluminium, and magnesium. Try to cut these metals with a sharp knife and note your observations. They are very hard to cut. Hold a piece of sodium metal with a pair of tongs and try to cut it with a knife. Sodium can be cut easily with knife. Hence K and Na are soft metal cut with knife Activity 3.3 Page No. 38 Take pieces of iron, zinc, lead and copper try to strike it four or five times with a hammer. These metals are beaten into thin sheet on hammering. This property of metal is called malleability and metals are called malleable. Activity 3.4 Page ...
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ReplyDeletenice but it is of old syllabus
ReplyDeleteCBSE is a board of education that provides high quality syllabus to aide students’ development of their skills. In this endeavour, they constantly change the syllabus and exam methodology. Since the pattern is constantly changed, students are often faced with the dilemma and confusion of the pattern of the question paper. To reduce the anxiety, we prepared sample question papers that help students in preparing for the current year’s exams by way of reviewing and revising the questions available therein.
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