A. 0
B. 1
C. 7
D. 10
Related Mcqs:
- At room temperature, the product [H+] [OH-] in a solution is 10-14 moles/litre. If, [OH-] = 10-6 moles/litre, then the pH of the solution will be ________________________?
A. 6
B. 8
C. 10
D. 12 - Acidity or alkanity of a solution is expressed by its pH value, which is defined as (where, [H+] = hydrogen ion concentration in the solution) ?
A. log (1/H+)
B. – log (1/H+)
C. 1/log H+
D. None of these - The pH value of a solution is 5.9. If the hydrogen ion concentration is decreased hundred times, the solution will be______________?
A. Basic
B. More acidic
C. Neutral
D. Of the same acidity - If pH value of an acidic solution is decreased from 5 to 2, then the increase in its hydrogen ion concentration is _____________ times?
A. 10
B. 100
C. 1000
D. 10000 - pH value of a solution containing equal concentration of hydroxyl and hydrogen ions will be_________________?
A. 0
B. 10
C. 7
D. 14 - A solution which resists change in its pH value on addition of acid/alkali is called the ____________________ solution?
A. Neutral
B. Ideal
C. Buffer
D. Zero pH - The hydroxyl ion (OH-) concentration in a solution having pH value 3 will be_________________?
A. 10-11
B. 10-10
C. 10-3
D. 10-4 - 500 c.c. each of hydrogen at 700 mm Hg pressure and oxygen at 600 mm Hg pressure are put together in a vessel of 1 litre capacity. The final pressure of the gas mixture will be _____________ mm Hg?
A. 650
B. 700
C. 600
D. 375 - 80 kg of Na2SO4 (molecular weight = 142) is present in 330 kg of an aqueous solution. The solution is cooled such that. 80 kg of Na2SO4 .10H2O crystals separate out. The weight fraction of Na2SO4 in the remaining solution is_________________?
A. 0.00
B. 0.18
C. 0.24
D. 1.00 - Phenolic water generated in coke ovens & by-product plant attached to an integrated steel plant containing phenol in concentration of less than 100 mg/litre can be removed by_______________?
A. Chlorination
B. Treating in biological oxygen pond
C. Chemical coagulation
D. None of these
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