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प्रश्न
Write the opposite of the following: 10 km above sea level
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उत्तर
10 km below the sea level
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संबंधित प्रश्न
State, true or false of the given statement:
(b – c) × a=b – c × a
Indicate the following using '+' or '−' sign: 3 km below sea level
From the sum of 33 and −47, subtract −84.
Is the following statement true or false?
The difference of two integers is always an integer.
Multiply: 15 by 9
Write (T) for true and (F) for false for the following statement:
(−10) ÷ 1 = −10
36 ÷ (−9) = ?
Fill in the blanks.
The predecessor of −200 is ...... .
If we denote the height of a place above sea level by a positive integer and depth below the sea level by a negative integer, write the following using integers with the appropriate signs:
Sea level
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 | – |
