Example 1 · difficulty 1/5
A solution is prepared by dissolving 6 g of urea (molar mass 60 g mol⁻¹) in 178.2 g of water. The mole fraction of urea in the solution is:
- A. 0.01
- B. 0.10
- C. 0.99
- D. 0.001
Current-syllabus practice · Chemistry
NEET Chemistry Solutions Questions
Solutions practice focused on concentration terms, vapour pressure, colligative properties and abnormal molar mass.
200 original questions · explicit provenance labels
ChemistryPlate 78
NeetVellum atlas · fig. chemistry
78
What to master
concentration terms, vapour pressure, colligative properties and abnormal molar mass.
Original practice preview
These are current-syllabus NeetVellum questions, shown separately from historical-paper provenance.
Example 2 · difficulty 2/5
At a certain temperature, the Henry's law constant for argon dissolved in water is 40.3 kbar. If argon gas is bubbled over water at a partial pressure of 0.806 bar, the mole fraction of argon dissolved in the water is:
- A. 2 × 10⁻³
- B. 2 × 10⁻⁵
- C. 5 × 10⁻⁵
- D. 4 × 10⁻⁵
Example 3 · difficulty 3/5
Liquids A and B form an ideal solution. At 350 K, the vapour pressures of pure A and pure B are 450 mm Hg and 700 mm Hg respectively. For a solution of A and B whose total vapour pressure is 600 mm Hg, the mole fraction of A in the vapour phase is:
- A. 0.40
- B. 0.70
- C. 0.30
- D. 0.43
The evidence-first practice loop
- 1. Verify provenanceOfficial paper and final key before accepting a PYQ label.
- 2. Attempt closed-bookExpose the concept or execution gap before rereading.
- 3. Repair and returnClassify the miss and re-practice after a delay.
Canonical chapter practice
Frequently asked questions
How many Solutions NEET questions are available?
NeetVellum currently publishes 200 original, verified questions across the linked canonical chapter.
How should I revise Solutions for NEET?
Attempt questions before rereading, classify each miss, repair the specific concept, and re-practice after a delay until the error pattern disappears.