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Question
36 ÷ (−9) = ?
Options
4
-4
0
none of these
MCQ
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Solution
-4
36 ÷ (−9)
`36/9`
`=36/(9xx(-1))`
`=1/(-1) xx 36/9`
`= -1 xx 4`
= -4
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An atom changes to a charged particle called ion if it loses or gains electrons. The charge on an ion is the charge on electrons plus charge on protons. Now, write the missing information in the table given below:
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| Hydroxide ion | +9 | – | –1 |
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