The mole fraction of ethylene glycol (C2H6O2) in a solution containing 20% of C2H6O2 by mass is:
1. 0.932
2. 0.0672
3. 0.832
4. 0.732
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe molarity of a solution containing 5 g of NaOH in 450 mL solution is:
1. 0.188 mol dm–3
2. 0.478 mol dm–3
3. 0.378 mol dm–3
4. 0.278 mol dm–3
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe molality of 2.5 g of ethanoic acid (CH3COOH) in 75 g of benzene is:
1. 0.656 mol kg–1
2. 0.616 mol kg–1
3. 0.556 mol kg–1
4. 0.456 mol kg–1
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIf N2 gas is bubbled through water at 293 K, how many millimoles of N2 gas would dissolve in 1 litre of water?
(Partial pressure of nitrogen = 0.987 bar, Henry’s law constant for N2 at 293 K = 76.48 kbar).
1. 0.716 mmol
2. 0.616 mmol
3. 0.726 mmol
4. 0.516 mmol
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology