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प्रश्न
Indicate the following using '+' or '−' sign: 3 km below sea level
पर्याय
+
-
MCQ
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उत्तर
-
-3 km
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संबंधित प्रश्न
Write all integers between: 0 and 6
Fill in the blanks:
(−13) + 25 = .......
Find the sum of: 137 and −354
Find the sum of: 3002 and −888
Subtract: −15 from 25
36 ÷ (−9) = ?
Find the value of: −8 − |−3|
Write 'T' for true and 'F' for false for the following:
−(−36) − 1 = − 37.
Zero is neither positive nor negative.
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:
| Name of Ion | Proton Charge | Electron Charge | Ion Charge |
| Hydroxide ion | +9 | – | –1 |
| Sodium ion | +11 | – | +1 |
| Aluminium ion | +13 | –10 | – |
| Oxide ion | +8 | –10 | – |
