Kal subha 7 bje Sayad On aunga...please on aa jana...
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ØKKKK
NO NEED TO SAY SRRY
GOOD NIGHT
HORROR DREAMS ☺️
TC
Explanation:
An Olfactory indicator is a substance whose smell varies depending on whether it is mixed with an acidic or basic solution. ... Simply put, olfactory indicators are substances which have a different odour in acid and base solutions. For eg: Vanilla extract has a characteristic pleasant smell, onion and clove oil, etc.
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Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other
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