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75.

The approximate total energy of an ideal monoatomic gas [വിന at 27°C is
A) 1.67 B) 16.7 C) 167 D) 1670

At what temperature will helium atoms have the same rms velocity as hydrogen
molecule at 300K ?

A) 150K B) 300K C) 450K D) 600K

Give the correct statement about the viscosity of liquids.

A) increases with rise in temperature and increases with increase in pressure

B) decreases with rise in temperature and increases with increase in pressure

C) decreases with rise in temperature and decreases with increase in pressure
)

D) increases with rise in temperature and decreases with increase in pressure

The Miller indices of crystal planes that cut through crystal axes at (28, -30, -30) is
^) 2 3 8( 3 22 ‏و رہ‎ D)3 22
Number of effective atoms per unit cell in a bcc system is

A) 1 B) 2 ௦) 8 D) 4

The rule that relates the molar heat of vaporisation of a liquid with its normal boiling
point is
A) Raoult’s 8) Henry’s C) Trouton’s 0) ٤9

Calculate the approximate pOH of 0.03 M solution of HCI at 25°C is
A) 3 B) 7.48 C) 12.48 D) 14

If 5 is solubility of A(OH), in water then it solubility product is
^) 37 8( 3 ©) 97 0) 275"

A buffer is most effective in the range of pH values between
A) ‏كام‎ -1 and pK +1 8) pK -2 and pK +2
©) pK -3 and pK +3 0) pK - 4 and pK +4

Inthe conversion of nitrogen to ammonia at 400°C, what is the standard Gibbs energy
in kJmol if the equilibrium constant for the formation of ammonia is 105% 1 bar
pressure ?

A) 1 B) 10 ௦) 20 D) 200