4 RBTS PAPER(CHEMISTRY)
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4 RBTS PAPER

163854 The van't Haff factor for \(0.1 \mathrm{M}\). \(\mathrm{Ba}\left(\mathrm{NO}_3\right)_2\) solution is 2.74. The degree of dissociation is:

1 \(91.3 \%\)
2 \(87 \%\)
3 \(100 \%\)
4 \(74 \%\)
NCERT-XII-24
4 RBTS PAPER

163855 Calculate the mole fraction of ethylene glycol \(\left(\mathrm{C}_2 \mathrm{H}_6 \mathrm{O}_2\right)\) in a solution containing \(20 \%\) of \(\mathrm{C}_2 \mathrm{H}_6 \mathrm{O}_2\) by mass :

1 0.068
2 6.8
3 2.3
4 None
NCERT-XII-Ex.-04
4 RBTS PAPER

163856 Calculate molality of \(\mathbf{2 . 5} \mathrm{g}\) of ethanoic acid \(\left(\mathrm{CH}_3 \mathrm{COOH}\right)\) in \(75 \mathrm{~g}\) of benzene.

1 \(5.56 \mathrm{~mol} \mathrm{~kg}^{-1}\)
2 \(2.556 \mathrm{~mol} \mathrm{~kg}^{-1}\)
3 \(0.556 \mathrm{~mol} \mathrm{~kg}^{-1}\)
4 \(7.556 \mathrm{~mol} \mathrm{~kg}^{-1}\)
NCERT-XII-Ex.-05
4 RBTS PAPER

163857 \(\quad \mathbf{1 . 0 0} \mathrm{g}\) of a non-electrolyte solute dissolved in \(\mathbf{5 0} \mathrm{g}\) of benzene lowered the freezing point of benzene by \(0.40 \mathrm{~K}\). The freezing point depression constant of benzene is \(5.12 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}\). Find the molar mass of the solute.

1 \(356 \mathrm{~g} \mathrm{~mol}^{-1}\)
2 \(256 \mathrm{~g} \mathrm{~mol}^{-1}\)
3 \(156 \mathrm{~g} \mathrm{~mol}^{-1}\)
4 \(456 \mathrm{~g} \mathrm{~mol}^{-1}\)
NCERT-XII-19
NEET DIGITAL LIBRARY
4 RBTS PAPER

163854 The van't Haff factor for \(0.1 \mathrm{M}\). \(\mathrm{Ba}\left(\mathrm{NO}_3\right)_2\) solution is 2.74. The degree of dissociation is:

1 \(91.3 \%\)
2 \(87 \%\)
3 \(100 \%\)
4 \(74 \%\)
NCERT-XII-24
4 RBTS PAPER

163855 Calculate the mole fraction of ethylene glycol \(\left(\mathrm{C}_2 \mathrm{H}_6 \mathrm{O}_2\right)\) in a solution containing \(20 \%\) of \(\mathrm{C}_2 \mathrm{H}_6 \mathrm{O}_2\) by mass :

1 0.068
2 6.8
3 2.3
4 None
NCERT-XII-Ex.-04
4 RBTS PAPER

163856 Calculate molality of \(\mathbf{2 . 5} \mathrm{g}\) of ethanoic acid \(\left(\mathrm{CH}_3 \mathrm{COOH}\right)\) in \(75 \mathrm{~g}\) of benzene.

1 \(5.56 \mathrm{~mol} \mathrm{~kg}^{-1}\)
2 \(2.556 \mathrm{~mol} \mathrm{~kg}^{-1}\)
3 \(0.556 \mathrm{~mol} \mathrm{~kg}^{-1}\)
4 \(7.556 \mathrm{~mol} \mathrm{~kg}^{-1}\)
NCERT-XII-Ex.-05
4 RBTS PAPER

163857 \(\quad \mathbf{1 . 0 0} \mathrm{g}\) of a non-electrolyte solute dissolved in \(\mathbf{5 0} \mathrm{g}\) of benzene lowered the freezing point of benzene by \(0.40 \mathrm{~K}\). The freezing point depression constant of benzene is \(5.12 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}\). Find the molar mass of the solute.

1 \(356 \mathrm{~g} \mathrm{~mol}^{-1}\)
2 \(256 \mathrm{~g} \mathrm{~mol}^{-1}\)
3 \(156 \mathrm{~g} \mathrm{~mol}^{-1}\)
4 \(456 \mathrm{~g} \mathrm{~mol}^{-1}\)
NCERT-XII-19
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4 RBTS PAPER

163854 The van't Haff factor for \(0.1 \mathrm{M}\). \(\mathrm{Ba}\left(\mathrm{NO}_3\right)_2\) solution is 2.74. The degree of dissociation is:

1 \(91.3 \%\)
2 \(87 \%\)
3 \(100 \%\)
4 \(74 \%\)
NCERT-XII-24
4 RBTS PAPER

163855 Calculate the mole fraction of ethylene glycol \(\left(\mathrm{C}_2 \mathrm{H}_6 \mathrm{O}_2\right)\) in a solution containing \(20 \%\) of \(\mathrm{C}_2 \mathrm{H}_6 \mathrm{O}_2\) by mass :

1 0.068
2 6.8
3 2.3
4 None
NCERT-XII-Ex.-04
4 RBTS PAPER

163856 Calculate molality of \(\mathbf{2 . 5} \mathrm{g}\) of ethanoic acid \(\left(\mathrm{CH}_3 \mathrm{COOH}\right)\) in \(75 \mathrm{~g}\) of benzene.

1 \(5.56 \mathrm{~mol} \mathrm{~kg}^{-1}\)
2 \(2.556 \mathrm{~mol} \mathrm{~kg}^{-1}\)
3 \(0.556 \mathrm{~mol} \mathrm{~kg}^{-1}\)
4 \(7.556 \mathrm{~mol} \mathrm{~kg}^{-1}\)
NCERT-XII-Ex.-05
4 RBTS PAPER

163857 \(\quad \mathbf{1 . 0 0} \mathrm{g}\) of a non-electrolyte solute dissolved in \(\mathbf{5 0} \mathrm{g}\) of benzene lowered the freezing point of benzene by \(0.40 \mathrm{~K}\). The freezing point depression constant of benzene is \(5.12 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}\). Find the molar mass of the solute.

1 \(356 \mathrm{~g} \mathrm{~mol}^{-1}\)
2 \(256 \mathrm{~g} \mathrm{~mol}^{-1}\)
3 \(156 \mathrm{~g} \mathrm{~mol}^{-1}\)
4 \(456 \mathrm{~g} \mathrm{~mol}^{-1}\)
NCERT-XII-19
For More Updates join with Us
4 RBTS PAPER

163854 The van't Haff factor for \(0.1 \mathrm{M}\). \(\mathrm{Ba}\left(\mathrm{NO}_3\right)_2\) solution is 2.74. The degree of dissociation is:

1 \(91.3 \%\)
2 \(87 \%\)
3 \(100 \%\)
4 \(74 \%\)
NCERT-XII-24
4 RBTS PAPER

163855 Calculate the mole fraction of ethylene glycol \(\left(\mathrm{C}_2 \mathrm{H}_6 \mathrm{O}_2\right)\) in a solution containing \(20 \%\) of \(\mathrm{C}_2 \mathrm{H}_6 \mathrm{O}_2\) by mass :

1 0.068
2 6.8
3 2.3
4 None
NCERT-XII-Ex.-04
4 RBTS PAPER

163856 Calculate molality of \(\mathbf{2 . 5} \mathrm{g}\) of ethanoic acid \(\left(\mathrm{CH}_3 \mathrm{COOH}\right)\) in \(75 \mathrm{~g}\) of benzene.

1 \(5.56 \mathrm{~mol} \mathrm{~kg}^{-1}\)
2 \(2.556 \mathrm{~mol} \mathrm{~kg}^{-1}\)
3 \(0.556 \mathrm{~mol} \mathrm{~kg}^{-1}\)
4 \(7.556 \mathrm{~mol} \mathrm{~kg}^{-1}\)
NCERT-XII-Ex.-05
4 RBTS PAPER

163857 \(\quad \mathbf{1 . 0 0} \mathrm{g}\) of a non-electrolyte solute dissolved in \(\mathbf{5 0} \mathrm{g}\) of benzene lowered the freezing point of benzene by \(0.40 \mathrm{~K}\). The freezing point depression constant of benzene is \(5.12 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}\). Find the molar mass of the solute.

1 \(356 \mathrm{~g} \mathrm{~mol}^{-1}\)
2 \(256 \mathrm{~g} \mathrm{~mol}^{-1}\)
3 \(156 \mathrm{~g} \mathrm{~mol}^{-1}\)
4 \(456 \mathrm{~g} \mathrm{~mol}^{-1}\)
NCERT-XII-19
NEET DIGITAL LIBRARY