The ratio of the mean KE of nitrogen and oxygen molecules at the same temperature is
-A) 16:35.5
B) 35.5:16
(C) `(35.5)^2: (16)^2`
(D) 1:1

Assuming ideal gas behaviour, the ratio of density of ammonia to that of hydrogen chloride at same temperature and pressure is : (Atomic wt. of Cl = 35.5 u)

The ratio of the mean proportional between 0.7 and 2.8 and the third proportional to 2.5 and 3.5 is:

The average kinetic energy of the molecules of hydrogen is E. if the mass of oxygen molecules is 16 times that of hydrogen molecules, the average K.E. of an oxygen molecule at the same temperature is

Two students A and B make measurement of the focal length of the same lens Readings of A : 16.35, 16.30, 16.27, 16.35, 16.50, 16.25, 16.30, 16.50, 16.20, and 16.40 cm. Reading of B : 15.83, 16.38, 15.88, 16.22, 16.30, 16.43, 16.00, 15.80, 16.40, and 16.30 . Whose measurements are move reliable and why?

Convert the following to per cents: (a) (12)/(16), (b) 3.5, (c) (49)/(50) (d) (2)/(2

If 8:x16:3535(b)70(35)/(2) (d) 24

4^(3.5) : 2^(5) is the same as:

3.5 can be expressed in terms of percentage as 0.35% b.3.5% c.35% d.350%