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प्रश्न
Complete the statement given below by filling in the blanks with the correct words.
Atom contains ________ , with positively charged _____.
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उत्तर
Atom contains nucleus , with positively charged protons
संबंधित प्रश्न
Tick the most appropriate answer.
The constituents of a mixture are present in
- a fixed ratio
- a variable ratio,
- the ratio of 2: 1
- none of these
Write true or false
A heterogeneous mixture has a uniform composition throughout the mixture
Give three differences between metals and non-metals.
Fill in the blank
The most abundant element in the atmosphere is _______.
Tick (√) the correct alternative from the choice given for the following statement.
All pure substances have
Tick (√) the correct alternative from the choice given for the following statement.
Brass and bronze are
Classify substances into pure and impure substances in the form of a chart or tabulation.
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.
______ is a mixture of gases.
Name the two elements which are derived from the country.
