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Author: Zabeehullah
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- the actual mass of one atom ol the element
- the relative mass of an atom of the element
- the average relative mass of dilferent atoms of the element
- much different from the mass number of the element
- Decreases
- Increases
- Same
- None of the above
- isotopes
- isobars
- isochores
- None of these
- Gold
- Mercury
- Silver
- copper
- Lower electronegativity
- Higher ionization potential
- Larger atomic radius
- Lower melting point
- boiling point decreases
- viscosity decreases
- density decreases
- boiling point increases
- salicylic acid is heated with phenol
- salicylic acid is heated with acetic anhydride in presence of conH2SO4
- phenol is heated with formaldehyde in presence of NaOH
- acetic acid as heated with ethyl alcohol in presence of conH2SO4
- depends on the nature of solvent
- independent of each other
- depends on each other
- none of the above
- to release mental disorders
- to treat allergy
- to kill micro organisms
- to neutralize the excess acid in the stomach
- white, red and black form
- metallic form, yellow, explosive forms
- only yellow form
- red and black forms only
- Friedal-crafts acetylation
- nitration
- Friedal-craft alkylation
- none of these.
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