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CBSE 9th Biology | Organization in the Living World-The Fundamental unit of life
Organization in the Living World-The Fundamental unit of life QUICK CONCEPT REVIEW SUMMARY: The year 1665 is of great importance in the history of science because Robert Hooke discovered that all living things consist of separate units called cells. Hooke’s observations were based on his experiment with cork which comes from the bark of Quercus…
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CBSE 9th Science | Matter-Nature and its Behaviour (Short Answer Type Questions)
Matter-Nature and its Behaviour (Short Answer Type Questions) Question 1. Classify the following substances as elements,compounds and mixtures. (i) Gasoline (ii) Tap water (iii) Distilled water (iv) Milk (v) Air (vi) Sand (vii) Diamond (viii)Wood (ix) Brass. Answer. (i) Mixture (Homogeneous) (ii) Mixture (Homogeneous) (iii) Compound (iv) Mixture (Heterogeneous) (v) Mixture (Heterogeneous) (iv) Mixture (Heterogeneous)…