NEET · Chemistry · Solutions & Colligative Properties doubts
9 doubts found
Why do people spread salt on icy roads and footpaths in winter?
Salt lowers the freezing point of water — a colligative effect.
Why does putting salt in pasta water or antifreeze in a car radiator change the boiling/freezing point?
Both are colligative effects.
Why do raisins swell up in water but a cucumber shrivels into a pickle in brine?
It's osmosis, driven by the concentration difference across the cell membranes.
Why must the saline drip given to a patient be 'isotonic' and not plain water?
Red blood cells sit in blood plasma of a certain solute concentration.
How does a reverse-osmosis (RO) purifier turn salty water into drinking water?
Normally osmosis drives pure water toward the salty side.
At the same concentration, why does calcium chloride melt ice better than glucose?
Colligative effects depend on the number of dissolved particles, captured by the van't Hoff factor i.
What does “Colligative property” actually mean in Solutions & Colligative Properties, and why does it matter for NEET?
a property that depends only on the NUMBER of solute particles, not their identity — like freezing-point depression or osmotic pressure.
I keep getting “Colligative property” questions wrong in Solutions & Colligative Properties. What's the trap?
thinking the kind of solute (sugar vs salt) matters more than how many particles it makes.
What does “Osmosis” actually mean in Solutions & Colligative Properties, and why does it matter for NEET?
the net movement of solvent through a semipermeable membrane from a dilute (low-solute) side to a concentrated (high-solute) side.