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46. The acid solution with higher pH value is (NTSE Tamil Nadu, Stage-I, 2015-16)
0.1 M HCI acid
0.1 M H2S04 acid
0.05 M HN03 acid
0.05 M H3P04 acid
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47. Which of the following is a strong acid? (NTSE Gujarat, Stage-I, 2015-16)
Acetic acid
Citric acid
Nitric acid
Oxalic acid
48. The correct order of increasing basicity in the following may be (NTSE Haryana, Stage-I, 2015-16)
Ba(OH)2 < Ca(OH)2 < Mg(OH)2 < Be(OH)2
Be(OH)2< Mg(OH)2 < Ca(OH)2 < Ba(OH)2
Ba(OH)2 < Mg(OH)2 < Ca(OH)2 < Be(OH)2
Mg(OH)2 < Ca(OH)2 < Be(OH)2 < Ba(OH)2
49. The aqueous solution of Na2S04 will have a pH Value (NTSE Chhattisgarh, Stage-I, 2016-17)
7
Less than 7
More than 7
Zero
50. Nature of a solution depends on its [H30+], but pH notation is used to express the nature of solution because (NTSE Andhra Pradesh, Stage-I, 2015-16)
[H30+] value is very high in order to express it as simple number
[H3O+] and [OH-] values are same to overcome confusion.
[H30+] value is extremely small, in order to express the nature of solution as a simple whole number
None of these
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