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In which case is the number of molecules of water  maximum ?

(A)

0·00224 L of water vapours at 1 atm and 273 K

(B)

0·18 g of water

(C)

18 mL of water

(D)

\(10^{-3}\) mol of water

NEET - Medical UG-2018 Medium

Answer & Solution:

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Other Questions of the same topic

Q1:

A solution of 1.25 g of ‘P’ in 50 g of water lowers freezing point by \(\large 0.3^{\circ}C\) . Molar mass of ‘P’ is
94. \(\large K_{F(water)}= 1.86 \, K \, Kg \, \, mol^{-1}.\) The degree of association of ‘P’ in water is

(A)

80%

(B)

75%

(C)

60%

(D)

65%

K-CET-2014 Medium

Q2:

1.78 g of an optically active L-amino acid (A) is treated with \(\large NaNO_{2}/HCl\, at\, 0^{\circ}C.\, 448\, cm^{3}\) of
nitrogen was at STP is evolved. A sample of protein has 0.25% of this amino acid by mass.
The molar mass of the protein is

(A)

\(\large 34,500\,g\, mol^{-1}\)

(B)

\(\large 36,500\,g\, mol^{-1}\)

(C)

\(\large 35,400\,g\, mol^{-1}\)

(D)

\(\large 35,600\,g\, mol^{-1}\)

K-CET-2014 Hard

Q3:

The density of 2 M aqueous solution of NaOH is 1.28 \(\large g/cm^3\). The molality of the solution is:

[Given that molecular mass of NaOH = \(\large 40 \ g \ mol^{-1}\)]

(A)

1.20 m

(B)

1.56 m

(C)

1.67 m

(D)

1.32 m

NEET - Medical UG-2019 Medium

Q4:

A metal M (specific heat 0.16) forms a metal chloride with \(\approx\) 65% chlorine present in it. The formula of the metal chloride will be

(A)

MCl

(B)

\(MCl_{2}\)

(C)

\(MCl_{3}\)

(D)

\(MCl_{4}\)

WB-JEE-2018 Medium

Physics Biology

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