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प्रश्न
Select the correct answer from the choice given below.
A compound
विकल्प
nitrogen
ozone
zinc chloride
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उत्तर
zinc chloride
संबंधित प्रश्न
Write true or false
The constituents of a mixture can only be separated by chemical means.
Write true or false
Handpicking can be used as a separation technique if the particle size of the constituents of the mixture is the same.
What are the different types of mixtures ?
State four important characteristics of compounds
Name the elements present in Ammonia
Name the elements present in Marble
Name the elements present in Washing soda
What is the proportion of element present in the following compound?
H2O
Give the example of a compound containing hydrogen and oxygen.
Give the example of a compound containing calcium and oxygen.
What is the molecular formula of the following compound?
Sodium chloride
What is the molecular formula of the following compound?
Methane
Write the chemical formula and name the elements present in the following compounds.
- Sodium chloride
- Potassium hydroxide
- Carbon dioxide
- Calcium oxide
- Sulphur dioxide
Mention any four compounds and their uses.
Mention the uses of the following compounds.
- Baking soda
- Bleaching powder
- Quick lime
State whether true or false. If false, correct the statement.
A compound cannot be broken into simpler substances chemically.
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.
Name a non-metal which is known to form the largest number of compounds.
Classify the following as element and compound,
- Silver
- Ammonia
- Water
- Mercury.
When does the pressure of the gas increase?
Name the compounds used in fertilizers.
