Question

23. A few changes are listed in the box :
(i) Cutting of hair (ii) Mixing fruits and cornflakes
(iii) Adding baking soda to vinegar (iv) Spoiling
of food (v) Bending of a piece of metal on heating
(vi) Decomposition of old leaves (vii) Shredding
of paper
Which of the following represents their correct
classification?
Physical Physical Chemical
(Irreversible) (Reversible) (Irreversible)
A. (i). (vii) (ii), (v) (iii), (iv), (vi)
B. (ii), (v) (i), (vii) (iii), (iv), (vi)
C. (ii), (iii) (i), (iv) (v), (vi), (vii)
D. (). (vi) (v). (vii)
(ii), (iii), (iv)
9​

Answer 1

Explanation:

There are 206 bones in the adult human body and 300 in a child's developing body. Fleas can jump 130 times higher than their height. In human terms, that is equivalent to a 6-foot person jumping 780 feet into the air.

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