Given below are two statements: Statement (I): NaCl is added to the ice at 0°C, present in the ice cream box to prevent…
Solutions · Class 12 · JEE Main Previous Year Question
Given below are two statements:
Statement (I): NaCl is added to the ice at 0°C, present in the ice cream box to prevent the melting of ice cream. Statement (II): On addition of NaCl to ice at 0°C, there is a depression in freezing point.
In the light of the above statements, choose the correct answer from the options given below:
- a✓
Statement I is false but Statement II is true
- b
Both Statement I and Statement II are true
- c
Both Statement I and Statement II are false
- d
Statement I is true but Statement II is false
Statement I is false but Statement II is true
Strategy:\n> Analyze the physics of freezing mixtures and colligative properties.\n\nStatement I: " is added... to prevent the melting of ice cream."\n- This is False. is added to ice to create a freezing mixture with a temperature significantly below 0°C (up to −21°C). This allows the ice cream to freeze or stay frozen. The mixture itself actually melts faster because it is a solution, but it absorbs heat from the ice cream to do so.\n\nStatement II: "On addition of to ice... there is a depression in freezing point."\n- This is True. Adding a non-volatile solute like to water lowers its freezing point (Raoult's Law).\n\n
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