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Archit Anand K.p.
Subject: Chemistry
, asked on 23/5/18
Q.27. An organic liquid, A in immiscible with water. When boiled together with water, the boiling point is 90
$\xb0C$
at which the partial vapour pressure of water is 526 mm Hg. The superincumbent (atmospheric) pressure is 736 mm Hg. The weight ratio of the liquid and water collected is 2.5 : 1. Wha is the molecular weight of liquid.
Answer
1
Queens Land
Subject: Chemistry
, asked on 23/5/18
Solve this:
Q. 2 M of 100 mL Na
_{2}
SO
_{4}
is mixed with 3 M of 100 mL NaCl solution and 1 M of 200 mL caC1
_{2}
solution. Then, the ratio of the concentration of cation and anion is
(1) 1:1 (2) 2:1
(3) 2:3 (4) 1:2
Answer
1
Queens Land
Subject: Chemistry
, asked on 23/5/18
Solve this:
Q . The volume of water added to 500 mL, 0.5 M NaOH so that its strength becomes 10 mg NaOH per mL is
(1) 250 mL (2) 500 mL
(3) 750 mL (4) 1000 mL
Answer
2
Queens Land
Subject: Chemistry
, asked on 23/5/18
Solve this:
Q. Two liquids A and B form ideal solutions. At 300 K, the vapour pressure of solution containing 1 mole of A and 3 mole of B is 550 mm Hg. At the same temperature, if one more mole of B is added to this solution, the vapour pressure of the solution increase by 10 mm Hg. The vapour pressure of A and B in their pure state (in mm Hg) respectively are
(1) 400, 600 (2) 500, 500
(3) 200, 400 (4) 300, 600
Answer
1
Queens Land
Subject: Chemistry
, asked on 22/5/18
Solve this:
Q. Equal moles of benzene and toluene are mixed the V.P. of benzene and toluene in pure state are 700 and 600 mm Hg respectively. The mole fraction of benzene in vapour state is
(1) 0.7
(2) 0.47
(3) 0.50
(4) 0.54
Answer
1
Queens Land
Subject: Chemistry
, asked on 22/5/18
Solve this:
Q.
If P
$\xb0$
and P are the vapour pressure of solvent and solution, n
_{1}
and n
_{2}
are the moles of solute and solvent, then
$\left(1\right)\mathrm{P}\xb0=\mathrm{P}\left(\frac{{\mathrm{n}}_{2}}{{\mathrm{n}}_{1}+{\mathrm{n}}_{2}}\right)\left(2\right)\mathrm{P}=\mathrm{P}\xb0\left(\frac{{\mathrm{n}}_{2}}{{\mathrm{n}}_{1}+{\mathrm{n}}_{2}}\right)\phantom{\rule{0ex}{0ex}}\left(3\right)\mathrm{P}\xb0=\mathrm{P}\left(\frac{{\mathrm{n}}_{1}}{{\mathrm{n}}_{1}+{\mathrm{n}}_{2}}\right)\left(4\right)\mathrm{P}\xb0=\mathrm{P}\times {\mathrm{n}}_{1}$
Answer
1
Queens Land
Subject: Chemistry
, asked on 22/5/18
Solve this:
Q. The highest temperature at which vapour pressure of any liquid can be measured is
(1) Critical temperature
(2) Boyle's temperature
(3) Boiling point of the liquid
(4) Kraft temperature
Answer
2
Queens Land
Subject: Chemistry
, asked on 22/5/18
Solve this:
Q. If solubility of any gas in the liquid at 1 bar pressure is 0.05 mol/L. What will be its solubility at 3 bar pressure, keeping the temperature constant ? ..
$\left(1\right)\frac{0.05}{3}\mathrm{mol}/\mathrm{L}\phantom{\rule{0ex}{0ex}}\left(2\right)0.15\mathrm{mol}/\mathrm{L}\phantom{\rule{0ex}{0ex}}\left(3\right)0.05\mathrm{mol}/\mathrm{L}\phantom{\rule{0ex}{0ex}}\left(4\right)1.0\mathrm{mol}/\mathrm{L}$
Answer
2
Queens Land
Subject: Chemistry
, asked on 21/5/18
$Solvethis:\phantom{\rule{0ex}{0ex}}Twocomponentsintheratioofx:yformanazeotropicmixture.Theyaremixedintheratioofx:2y,howmanymoles\phantom{\rule{0ex}{0ex}}oneofthepurecomponentywillbeevaporatedbeforegettingazeotropicsolution?$
Answer
1
Aparna Sahu
Subject: Chemistry
, asked on 21/5/18
Solve 26 .
Q.26. 3.6 gram of oxygen is adsorbed on 1.2 g of metal powder. What volume of oxygen adsorbed per gram of the adsorbent at 1 atm and 273 K?
A. 0.19 L
${g}^{-1}$
B. 1 L
${g}^{-1}$
C. 2.1 L
${g}^{-1}$
D. None of these
Answer
1
Queens Land
Subject: Chemistry
, asked on 21/5/18
Solve this:
Q. Vapour pressure of water is 360 mm Hg, how much urea should be added to 200 mL water to reduce its vapour pressure by 0.5 %? (Molecular wt. of urea = 60)
Answer
1
Royel Ghost
Subject: Chemistry
, asked on 20/5/18
Pls solve question no. 7. .pls give the correct answer with reasons and explanation..
Question No. 7
In which of the given conditions of temperature and pressure will the density of nitrogen have the
largest
value?
A. 540 K and 2 atm
B. 273 K and 1 atm
C. 540 K and 3 atm
D. 273 K and 2 atm
Answer
1
Aparna Sahu
Subject: Chemistry
, asked on 20/5/18
Solve this:
Q.51. Molarity of 0.2 N
${H}_{2}S{O}_{4}$
is .............
1) 0.2
2) 0.4
3) 0.6
4) 0.1
Answer
1
Shivansh Ahuja
Subject: Chemistry
, asked on 16/5/18
In benzene solvent 50% of acetic acid dimerises while rest ionises. The value of vant Hoff factor I is
Answer
1
Shivansh Ahuja
Subject: Chemistry
, asked on 16/5/18
The osmotic pressure of 0.05 M monobasic acid having poh= 12 at 25 degree celcius is
Answer
2
1
2
3
4
5
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What are you looking for?

Q. 2 M of 100 mL Na_{2}SO_{4}is mixed with 3 M of 100 mL NaCl solution and 1 M of 200 mL caC1_{2}solution. Then, the ratio of the concentration of cation and anion is(1) 1:1 (2) 2:1

(3) 2:3 (4) 1:2

Q . The volume of water added to 500 mL, 0.5 M NaOH so that its strength becomes 10 mg NaOH per mL is

(1) 250 mL (2) 500 mL

(3) 750 mL (4) 1000 mL

Q. Two liquids A and B form ideal solutions. At 300 K, the vapour pressure of solution containing 1 mole of A and 3 mole of B is 550 mm Hg. At the same temperature, if one more mole of B is added to this solution, the vapour pressure of the solution increase by 10 mm Hg. The vapour pressure of A and B in their pure state (in mm Hg) respectively are

(1) 400, 600 (2) 500, 500

(3) 200, 400 (4) 300, 600

Q. Equal moles of benzene and toluene are mixed the V.P. of benzene and toluene in pure state are 700 and 600 mm Hg respectively. The mole fraction of benzene in vapour state is

(1) 0.7

(2) 0.47

(3) 0.50

(4) 0.54

Q._{1}and n_{2}are the moles of solute and solvent, then$\left(1\right)\mathrm{P}\xb0=\mathrm{P}\left(\frac{{\mathrm{n}}_{2}}{{\mathrm{n}}_{1}+{\mathrm{n}}_{2}}\right)\left(2\right)\mathrm{P}=\mathrm{P}\xb0\left(\frac{{\mathrm{n}}_{2}}{{\mathrm{n}}_{1}+{\mathrm{n}}_{2}}\right)\phantom{\rule{0ex}{0ex}}\left(3\right)\mathrm{P}\xb0=\mathrm{P}\left(\frac{{\mathrm{n}}_{1}}{{\mathrm{n}}_{1}+{\mathrm{n}}_{2}}\right)\left(4\right)\mathrm{P}\xb0=\mathrm{P}\times {\mathrm{n}}_{1}$

Q. The highest temperature at which vapour pressure of any liquid can be measured is

(1) Critical temperature

(2) Boyle's temperature

(3) Boiling point of the liquid

(4) Kraft temperature

Q. If solubility of any gas in the liquid at 1 bar pressure is 0.05 mol/L. What will be its solubility at 3 bar pressure, keeping the temperature constant ? ..

$\left(1\right)\frac{0.05}{3}\mathrm{mol}/\mathrm{L}\phantom{\rule{0ex}{0ex}}\left(2\right)0.15\mathrm{mol}/\mathrm{L}\phantom{\rule{0ex}{0ex}}\left(3\right)0.05\mathrm{mol}/\mathrm{L}\phantom{\rule{0ex}{0ex}}\left(4\right)1.0\mathrm{mol}/\mathrm{L}$

Q.26. 3.6 gram of oxygen is adsorbed on 1.2 g of metal powder. What volume of oxygen adsorbed per gram of the adsorbent at 1 atm and 273 K?

A. 0.19 L${g}^{-1}$

B. 1 L${g}^{-1}$

C. 2.1 L${g}^{-1}$

D. None of these

Q. Vapour pressure of water is 360 mm Hg, how much urea should be added to 200 mL water to reduce its vapour pressure by 0.5 %? (Molecular wt. of urea = 60)

Question No. 7

In which of the given conditions of temperature and pressure will the density of nitrogen have the

largestvalue?A. 540 K and 2 atm

B. 273 K and 1 atm

C. 540 K and 3 atm

D. 273 K and 2 atm

Q.51. Molarity of 0.2 N ${H}_{2}S{O}_{4}$ is .............

1) 0.2

2) 0.4

3) 0.6

4) 0.1