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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
What is meant by 2H and H2
Tick (√) the correct alternative from the choice given for the following statement
The hardest naturally occurring substance
Complete the statement given below by filling in the blank with the correct word.
From the elements nitrogen, chlorine, bromine, the element present in the atmosphere is ________.
Select the correct answer from the choice given below.
The type of molecule- bromine
Explain the difference between Atoms and molecules.
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.
State true of false. If false, give the correct statement.
Two different elements may have similar atoms.
Higher Order Thinking Skills.
List out the metals, non-metals and metalloids which you use in your house, schools. Compare their properties.
Classify the substances given in Fig. 2.2 into elements and compounds
How are elements classified?
