Question

15 to 16 cry 5 marks
Write the atomicity of (a) Sulphur-s, (b) Phosphorous
Classify as Elements, compounds and mixtures
(a) Sodium (b) Methane (c) Blood (d) Sugar solution
State the role of large air cavities present in parenchyma of aquatic plants.
Name the tissue present under the skin and arranged in a pattern of layers.
5.Write the differences between Homogeneous and Heterogeneous mixtures
6. Calculate the mass of 10 moles of Na, So,
7. In a temporary mount of leaf epidermis, we observe small pores.
What are the pores present in the leaf epidermis called?
(6) How are these pores beneficial to the plant?
8. Name the connective tissue which helps in the repair of tissues. State where this tissue
is found. Mention one more function.
9. Calculate the mass of water and glucose required to make 250 g of 40% solution of
glucose
10. State the separation techniques you would apply for the separation of
(a) Sodium Chloride from its solution in water fb) Oil from water
(C)Iron pins from sand
(d)Different pigments from an extract of leaves
(e) Butter from curd
(f)wheat grains from husk
1. Distinguish between Physical and chemical changes with two examples each.​

Answer 1

Answer:

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