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State whether True or False:- Salt (Na...

State whether True or False:-
Salt (NaCl) melts at a temperature of about `800^@C`

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JNAN PUBLICATION-MATTER (STRUCTURE OF MATTER)-EXAMPLE
  1. State whether True or False:- In a solid the average distance betwee...

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  2. State whether True or False:- The kinetic energy of molecules in a l...

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  3. State whether True or False:- Salt (NaCl) melts at a temperature of ...

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  4. State whether True or False:- Ionic compounds are made of molecules.

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  5. State whether True or False:- Liquids have definite shape, but they ...

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  6. State whether True or False:- The mass of an atom can not be measure...

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  7. Fill in the blanks: - In 1808 published his atomic theory.

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  8. Fill in the blanks: - The samllest particle of an element that retai...

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  9. Fill in the blanks: - Atoms of the same element possessing unequal n...

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  10. Fill in the blanks: - Electrons are charged.

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  11. Fill in the blanks: - The number of protons in an atom is called its...

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  12. Fill in the blanks: - The total number of protons and neutrons is an...

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  13. Fill in the blanks: - The has mass but no charge.

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  14. Fill in the blanks: - Atoms gain or lose to attain stability.

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  15. Fill in the blanks: - When an atom gains or loses an electron, an i...

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  16. Fill in the blanks: - Solids have their own shape and .

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  17. Fill in the blanks: - Atoms of different elements differ in mass and...

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  18. Match the column A with column B.

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  19. What does the word 'atoms' mean in Greek language?

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  20. Who is the father of atomic theory?

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