Related Questions

An emf of the order of mV is generated when two solutions of different hydrogen ion concentration are separated by a thin glass wall. This is the working principle of a
A PH meter
B Polarimeter
C Chromatograph
D Polarograph
If the pH value of a solution changes by one unit, it implies that hydrogen ion concentration in the solution will change __________ times.
A 10
B 20
C 70
D 100
The pH scale measures the hydrogen ion concentration in a solution. What does P mean in this?
A Power
B Potenz, which means power in German
C Potential, which means comfort in German
D Potency, which means power in German
The pH value is the measure of hydrogen ion concentration in a solution. The term pH stands for the __________ in the solution.
A Power of hydrogen ion concentration
B Percentage of hydrogen ions
C Presence of hydrogen ions
D None of these
নিচের কোন আয়নটি o2- এর সম-ইলেকট্রন বিশিষ্ট? (Which ion of the following has the same number of electrons as an o2- ion?) 
A K+
B Mg2+
C Cl-
D S2-
What is the pH of distilled water?
A 0
B 1
C 7
D 14
With increase in the temperature of pure (distilled) water, its
A POH decreases and pH increases
B POH and pH both 4ecreases
C PH and pOH both increases
D PH decreases and pOH increases
What is the approximate speed of sound in distilled water at 25°C (77°F)?
A 1598 m/s
B 1285 m/s
C 1498 m/s
D 3980 m/s
A 25 ml sample was diluted to 250ml with odourless distilled water so that the odour of the sample no longer perceivable. What was the Threshold odour number?
A 11
B 10
C 25
D 05
Primary active transport of hydrogen ion proton pump occurs in
A Gastric glands
B Cortical collecting ducts of the kidneys
C Osteoclasts of bone
D Ventricles of the brain
E Capillaries in the lungs

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