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Chapter 4: Problem 19
Parachors of two liquids can be compared by (a) their molar volumes (b) their molecular masses (c) their atomic numbers (d) their vapour pressure
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With the increasing molecular mass of a liquid, the viscosity (a) decreases (b) increases (c) is not affected (d) none of above
For any liquid, the number of drops formed per unit volume depends on (a) viscosity (b) surface tension (c) pressure (d) none
Water boils at lower temperature on high altitudes because (a) atmospheric pressure is low there (b) atmospheric pressure is high there (c) water is weakly hydrogen bonded there (d) water in pure form is found there
If \(\eta_{1}\) and \(\eta_{2}\) are coefficients of viscosity of two liquids, \(d_{1}\) and \(d_{2}\) are their densities and \(t_{1}\) and \(t_{2}\) are their flow times in an Ostwald's viscometer then (a) \(\frac{\eta_{1}}{\eta_{2}}=\frac{d_{1} t_{2}}{d_{2} t_{1}}\) (b) \(\frac{\eta_{1}}{\eta_{2}}=\frac{d_{2} t_{2}}{d_{1} t_{1}}\) (c) \(\frac{\eta_{1}}{\eta_{2}}=\frac{d_{1} t_{1}}{d_{2} t_{2}}\) (d) \(\frac{\eta_{1}}{\eta_{2}}-\frac{d_{2} t_{1}}{d_{1} t_{2}}\)
When a student was given a viscometer, the liquid was sucked with difficulty; the liquid may be: (a) benzene (b) toluene (c) water (d) glycerine
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