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प्रश्न
Tick (√) the correct alternative from the choice given for the following statement.
The compound used as common salt is
विकल्प
sodium chloride
calcium chloride
sodium oxide
hydrogen chloride
उत्तर
sodium chloride
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संबंधित प्रश्न
Tick the most appropriate answer.
How many times is a proton heavier than an electron?
- 1500
- 1800
- 1840
- none of these
Write the Chemical Name of the Following and Also Give Their Molecular Formulae:
Vinegar
Write the names of elements from the following symbol:
Br
Select the correct answer to the statement given below:
A non-metal which exists in the liquid state.
Represent with the help of a simple chart how matter is classified into pure or impure substances & further into elements, compounds & mixtures, with elements further segmented.
Select the correct answer from A, B, C, D & E for the statement given below :
A diatomic molecule.
Give a reason for the following statement :
Brass & bronze are examples of mixtures, while copper sulphate & lead nitrate are examples of compounds.
Elements : Combine to form compounds :: Compounds : ______.
Match the following.
| Atom | Building block of matter |
| Element | Atoms of different kinds |
| Compound | Atoms of the same kind |
| Molecule | Smallest unit of a substance |
Elements contain the ______of the same kind.
