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CBSE 9th Science | Matter-Nature and its Behaviour Questions for Examination
Matter-Nature and its Behaviour Questions for Examination Question 1. How many elements are in gaseous state at room temperature? Answer. 11 elements are in gaseous state at room temperature. Question 2. Name two elements which are in liquid state at room temperature? Answer. Mercury, Bromine. Question 3. What is the state of elements gallium and…
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CBSE 9th Science | Matter-Nature and its Behaviour (Long Answer Type Questions)
Matter-Nature and its Behaviour (Long Answer Type Questions) Question 1. Classify the following as physical change or chemical change. (i) Burning of magnesium ribbon in air (ii) Burning of sulphur in air (iii) Electrolysis of water (iv) Purification of copper sulphate from impure copper sulphate by crystallization, (v) Preparation of sugar solution (vi) Conversion of…