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प्रश्न
State the number of atoms of CaCO3
उत्तर
CaCO3 has atoms of
Calcium 1 atom in number
Carbon 1 atom in number
Oxygen 3 atoms in number
The name of the compound is Calcium Carbonate.
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संबंधित प्रश्न
Give Two Examples for Each of the Following: Inert Gases
Name: a Metal Which is a Poor Conductor of Electricity.
Name: a Non-metal Which is a Good Conductor of Electricity.
Give reason: A frying pan is made up of steel but its handle is made up of wood.
Complete the statement given below by filling in the blank with the correct word.
The basic unit of an element is an __________.
Match the compounds in List I – 1 to 20 with their correct formulas from in List II-A to T.
| List I | List II | ||
| 1 | Hydrochloric acid | A | NaCI |
| 2 | Potassium Hydroxide | B | NaOH |
| 3 | Sulphuric Acid | C | KCI |
| 4 | Zinc Hydroxide | D | Ca(OH)2 |
| 5 | Sodium Chloride | E | CaS |
| 6 | Nitric Acid | F | CuSO4 |
| 7 | Calcium Hydroxide | G | CaCO3 |
| 8 | Carbonic Acid | H | NH4CI |
| 9 | Sodium hydroxide | I | HCI |
| 10 | Copper sulphate | J | ZnO |
| 11 | Potassium Chloride | K | HNO3 |
| 12 | Calcium Carbonate | L | H2CO3 |
| 13 | Magnesium Sulphide | M | MgS |
| 14 | Zinc Sulphate | N | MgO |
| 15 | aluminium Hydroxide | O | KOH |
| 16 | Sodium Carbonate | P | ZnSO4 |
| 17 | Calcium Sulphide | Q | Na2CO3 |
| 18 | Magnesium Oxide | R | H2SO4 |
| 19 | Zinc Oxide | S | AI(OH)3 |
| 20 | Ammonium Chloride | T | Zn(OH)2 |
Write the names of elements from the following symbol:
Ti
Select the correct answer from A, B, C, D & E for the statement given below :
A mixture consisting of elements & a compound.
The first letter of an element is always written in ______ letter.
Differentiate between elements and compounds.
