The molar fraction of nitrogen, in a mixture containing 70 grams nitrogen, 120 grams of oxygen and 44 grams of carbon dioxide is
Options
(a) 0.36 (b) 0.34 (c) 0.29 (d) 5
Correct Answer: […]
HgI₂ reacts KI in aqueous solution to form K₂HgI₄.If small amount of HgI₂ is added to the aqueous KI solution, the
Options
(a) boiling point of the solution does not change (b) freezing […]
Which of the following solutions boils at the highest temperature
Options
(a) 0.1 M glucose (b) 0.1 M NaCl (c) 0.1 M BaCl₂ (d) 0.1 urea
Correct Answer:
0.1 M BaCl₂
Explanation:
No […]
The molarity of water is
Options
(a) 18 (b) 55.5 (c) 54 (d) 27.7
Correct Answer:
55.5
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
Acetic acid shows twice of its expected molecular weight value experimentally .This is because of
Options
(a) its dissociation into H⁺ and CH₃COO⁻ ions (b) colligative property measurement (c) molecular association through H-bonding […]
The van’t Hoff factor i for a compound which undergoes dissociation in one solvent and association in other solvent is respectively
Options
(a) less than one and greater than one (b) less than […]
2.5 Litre of 1 M NaOH solution mixed with another 3 litre of 0.5 M NaOH solution. Then find out molarity of resultant solution
Options
(a) 0.80 M (b) 1.0 M (c) 0.73 […]
From the colligative properties of solution which one is the best method for the determination of molecular weight of proteins and polymers
Options
(a) osmotic pressure (b) lowering in vapour pressure (c) lowering […]
According to Raoult’s law, the relative lowering of vapour pressure for a solution is equal to
Options
(a) mole fraction of solute (b) mole fraction of solvent (c) moles of solute (d) moles […]
At 25⁰ C , the highest osmotic pressure is exhibited by 0.1 M solution of
Options
(a) glucose (b) urea (c) CaCl₂ (d) KCl
Correct Answer:
CaCl₂
Explanation:
No explanation available. Be the […]
2017 Copyright Doctor Dreams Training Academy