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प्रश्न
Classify the following substances into elements and compounds
Mercury, sulphur, sugar, water, sand, gold, carbon, oxygen, alcohol, iron, marble, baking soda.
उत्तर
Element: Mercury, sulphur, gold, carbon, oxygen, iron.
Compound: Sugar, water, sand, alcohol, marble, baking soda.
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संबंधित प्रश्न
Fill in the blan
An ________ is a homogeneous mixture of two or more metals.
What is the difference between a pure substance and a mixture ?
Write the Chemical Name of the Following and Also Give Their Molecular Formulae:
Marble
Give one use of the following substance:
Iron
Answer the following question:
What do you understand by the statement: ‘metals are ductile and malleable’?
Tick (√) the correct alternative from the choice given for the following statement
A non-metal which is a good conductor of electricity.
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 noble gas.
The diagram represents fractional distillation for the separation of mixtures. Answer the following :
- Can two immiscible liquids be separated by this process?
- Separation of liquids by this process is based on which physical property?
- If methyl alcohol & water are to be separated, which liquid would remain in flask ‘X’ after condensation.
- Give a reason for the above answer.
- State the purpose of the fractionating column in the apparatus.
Name the constituents of water.
