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प्रश्न
Classify the following substances into compounds and mixtures:
उत्तर
Carbon dioxide, air, water, milk, common, salt, blood, fruit juice, iron sulphide.
Carbon dioxide — (Compound)
air — (Mixture)
water — (Compound)
milk — (Mixture)
common salt — (Compound)
blood — (Mixture)
fruit juice — (Mixture)
iron sulphide — (Compound)
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संबंधित प्रश्न
Give one example for the following types of mixtures :
misicible liquids
Answer the following question:
Why are copper and aluminium used to make electric wires?
Indicate whether the following statement is true or false:
All elements are artificially prepared
Tick (√) the correct alternative from the choice given for the following statement
A non-metal which is a good conductor of electricity.
Complete the statement given below by filling in the blank with the correct word.
An element is a pure substance which cannot be broken down by physical or _________ methods.
Select the correct answer to the statement given below:
A metalloid
Select the correct answer to the statement given below:
A non-metal which exists in the liquid state.
State true of false. If false, give the correct statement.
Two different elements may have similar atoms.
Classify the substances given in Fig. 2.2 into elements and compounds
Name the element which is used for making computer chips.
