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5(i) LPG(liquefied petroleum gas)
5(ii)(a)Centrifugation for cream from milk
(b)Crystallisation for extracting common salt from water or evaporation.
6.b) According to third law of motion every reaction has an equal and opposite reaction
a)Due to inertia, the leaves was in rest state and when it is shaken by us they tend to be in that state but then they come in motion and tends to be in it which causes its falling.
7. on the basis of rigidity
solids are most rigid they its shape can't be changed
liquid is not rigid it don't have any definite shape.It can take the shape in which is stored same as with gases
On the basis of fluidity
solids can't flow
and liquid can flow
gases are most flowable
10. (a) The no. of moles will be
given amount of NH3/ mass of one molecule
34/{14+(3×1)}
34/17
hence , the ans. is 2 moles
(b) valency of aluminium is +3
5(ii)(a)Centrifugation for cream from milk
(b)Crystallisation for extracting common salt from water or evaporation.
6.b) According to third law of motion every reaction has an equal and opposite reaction
a)Due to inertia, the leaves was in rest state and when it is shaken by us they tend to be in that state but then they come in motion and tends to be in it which causes its falling.
7. on the basis of rigidity
solids are most rigid they its shape can't be changed
liquid is not rigid it don't have any definite shape.It can take the shape in which is stored same as with gases
On the basis of fluidity
solids can't flow
and liquid can flow
gases are most flowable
10. (a) The no. of moles will be
given amount of NH3/ mass of one molecule
34/{14+(3×1)}
34/17
hence , the ans. is 2 moles
(b) valency of aluminium is +3
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