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Congruent Figures

Look for obje...

Question

Look for objects which have patterns of leaves and flowers on them in your house. Write their names.

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Solution

Disclaimer: The purpose of this section is to make the students observe their surroundings. The answer may vary from student to student based on his/her experience. It is highly recommended that the students prepare the answer on their own. A sample answer has been provided below for reference.

Curtains Carpets Bed sheets Pillow covers

Dresses Flooring Tiles Picture frames

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(g) A biennial plant
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Q. A person shines a coherent light of a bulb through an object,

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Q. The action of heat on the blue crystalline solid A, gives a reddish brown gas B, a gas which re-lights a glowing splint and leaves a black residue. When gas C, which has a rotten egg smell, is passed through a solution of A, a black ppt. is formed.
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For any two sets A and B, prove that

(i) $(A \cup B) - B = A - B$

(ii) $A - (A \cap B) = A - B$

(iii) $A - (A - B) = A \cap B$

(iv) $A \cup (B - A) = A \cup B$

(v) $(A - B) \cup (A \cap B) = A$

Q. Suppose A and B are two monomers.
Match the following types of Copolymers with their correct arrangements.

List - I List - II
(i) Random Copolymer 1) (A-A-A-A)-(B-B-B-B)-(A-A-A)

(ii) Block Copolymer 2) -A-B-A-B-A.

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(iv) Alternating Copolymer 4)-A-A-A-A-A-A-A-A-A-

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