1) Which according to these is the acid-base properties of water? a) water is a very strong electrolyte b) water can only act as a base c) water is a unique solvent d) poor conductor of electricity and it cannot undergo ionization 2) Lewis acid also called as? a) Electrophile b) Nucleophile c) proton donor d) proton acceptor 3) In the Brønsted–Lowry definition of acids and bases, a base ____ a) is a proton donor b) is a proton acceptor c) forms stable hydrogen bonds d) breaks stable hydrogen bonds 4) In the following reaction in aqueous solution, the acid reactant is __________ and its conjugate base product is ________ a) CH₃NH₂; CH₃NH₃⁺ b) HSO₄⁻ ; SO₄²⁻ c) CH₃NH₂; SO₄²⁻ d) HSO₄⁻ ; H₃O⁺ 5) Which one of the following is a conjugate acid–base pair? a) NaF and F⁻  b) HNO₃ and HNO₂ c) HI and I d) NH₄⁺ and NH₂⁻ 6) Acetic acid is a weak acid because a) its aqueous solution is acidic b) it is highly ionised c) it is weakly ionised d) it contains the COOH group 7) What is the common name of ethanoic acid a) acetic acid b) nitric acid c) formic acid d) acid folic 8) An acid is a substance which a) donates a proton b) donates an electron pair c) give OH- in water d) partially dissolves in water 9) What is the taste of bases ? a) sour b) sweet c) bitter d) salty 10) Factors that determine acid strength are element effect, inductive effect, resonance effect and _______ . a) electromeric effect b) hybridization effect c) hyperconjugation effect d) mesomeric effect 11) Arrange these bases in order of increasing strength: a) base A < base C < base B b) base A > base C > base B c) base B < base C < base A d) base B > base A > base C 12) What is the colour of phenolphthalein if the solution is acid ? a) red b) pink c) colourless d) purple 13) Those are example of weak acid except a) HF b) HClO3 c) H₂SO₃ d) HNO₂ 14) Those are example of strong bases except a) LiOH b) CsOH c) H₂O d) Ba(OH)₂ 15) Bromothymol blue is _______ a) Blue in acidic medium, yellow in basic medium b) Yellow in acidic medium, blue in basic medium c) Colourless in acidic medium, pink in basic medium d) Pink in acidic medium, colourless in basic medium. 16) Which of the following are present in a dilute Aqueous solution of hydrochloric acid? a) H₃O + Cl⁻ b) H₃O + OH⁻ c) Cl⁻ + OH⁻ d) Unionised HCl 17) What happens when a solution of an acid is mixed with a solution of a base in a test tube? a) (i) only b) (i) and (iii) c) (ii) and (iii) d) (i) and (iv) 18) What is the common name of ethanoic acid a) acetic acid b) nitric acid c) formic acid d) acid folic 19) A solution with pH of 9.50 has a pOH of _________ a) 9.50 b) 23.5 c) 0.50 d) 19.0 e) 4.50 20) The stronger the acid, __________ a) less concentrated the conjugate base b) the more concentrated the conjugate base c) the stronger its conjugate base d) the weaker its conjugate base

Acid-base titration

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