Exercise 13.7
(iii)
13. Cl -; one; two (ii) Nitrogen dioxide (ii) (iv) O (ii) (ii) Ionic
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NCERT prints no numerical answer for this exercise, so this working has not been cross-checked against the book.
No solution exists for this item — it is not a question.
The text captured under this number is stray OCR from the book's Answer Key section at the back, where two columns of printed answers were read across as a single line.
Chapter $\displaystyle 13$ prints exactly six Pause and Ponder questions (numbered $\displaystyle 1$ to $\displaystyle 6$), ending with question $\displaystyle 6$ on human activities and greenhouse gases; there is no question 7.
The fragments belong elsewhere: "Anion (\(\displaystyle O^{2-} \))", "\(\displaystyle Cl^{-} \); one; two", "Carbon dioxide / Nitrogen dioxide / Sulfur hexafluoride / Phosphorus trichloride", "\(\displaystyle NaHCO_{3} \), \(\displaystyle SO_{2} \), \(\displaystyle FeCl_{3} \), \(\displaystyle Cu_{2}O \)" and "MO; Ionic" are Chapter $\displaystyle 9$ answers.
"A - Green curve; B - Red curve; C - Blue curve", "$\displaystyle 0.01$ s", "$\displaystyle 0.007$ s", "$\displaystyle 0.04$ m; $\displaystyle 8500$ Hz" and "$\displaystyle 2$:$\displaystyle 9$" are Chapter $\displaystyle 10$ answers.
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