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51. We have to get the problem of acid rain under control. We must do whatever it takes to get the pH down to zero. The quote is (NTSE Andhra Pradesh, Stage-I, 2016-17)
Absolutely correct
Wrong
Meaningless because pH of rain water has no relation with its acidic nature
Quite meaningful
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52. Which of the following medicines is used for Indigestion? (NTSE Uttar Pradesh, Stage-I, 2015-16) (NTSE Maharashtra, Stage-I, 2015-16)
Antibiotic
Antacid
Analgesic
Antiseptic
53. Ammonium chloride is a salt of (NTSE Maharashtra, Stage-I, 2015-16)
Weak Acid and Weak Base
Weak Acid ami Strong Base
Strong Acid and Strong Base
Strong Acid and Weak Base
54. A colourless gas G1, produced on treating conc. H2S04 with common salt, is introduced into oneend of a glass tube. Through the other end, another pungent smelling colourless gas, G2, of molecular mass 17 is introduced. A white sublimate, S is produced inside the tube. Which of the following statements is wrong? (NTSE Odisha, Stage-I, 2016-17)
Both the gas G1 and G2 are water-soluble
Sublimate S, contains covalent bond and ionic bond
Sublimate, S when treated with caustic soda liberates G2 gas
Aqueous solution of each G1 and G2 gas isacidic in nature
55. What is the pH of 0.005 (M) H2S04 solution? (NTSE West Bengal, Stage-I, 2015-16)
3
4
2
5
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