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प्रश्न
Limestone contains ______ mainly.
पर्याय
calcium chloride
Calcium carbonate
calcium nitrate
calcium sulphate
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उत्तर
Limestone contains Calcium carbonate mainly.
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संबंधित प्रश्न
MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer.
Reduction is a chemical reaction in which there is
- removal of hydrogen
- removal of oxygen
- addition of oxygen
- none of these
Name the type of chemical reaction shown by the following equation:
CaCO3 → CaO + CO2
Name the type of chemical reaction shown by the following equation:
NaOH + HCl → NaCl + H2O
Choose the correct option from the bracket and explain the statement giving reason.
(Oxidation, displacement, electrolysis, reduction, zinc, copper, double displacement, decomposition)
The conversion of ferrous sulphate to ferric sulphate is ______ reaction.
Name: Gas with rotten egg smell.
Give a chemical test to distinguish between the following gases.
CO2 and SO2
Select the correct answer for the following options:
The gas obtained when potassium chlorate is heated in the presence of a catalyst.
Complete the table given below.
| Flame test for calcium chloride | Acid used for flame test |
Give a balanced equation for the conversion of a soluble lead salt to an insoluble lead salt – formed as a white precipitate.
Water boiling into water vapour is an example of chemical change.
