CHM 101 TUTORIAL QUESTIONS WITH ANSWERS 100% CORRECT.

CHM 101 TUTORIAL QUESTIONS WITH ANSWERS 100% CORRECT. ACID, BASE AND SALT 1 – What happens when a blue litmus paper is dipped into an acid solution? (a)Litmus paper turns red (b) Litmus paper turns green (c) Colour of litmus paper vanishes out (d) No change in the color of litmus paper 2 – Assertion: Universal indicator gives green color with distilled water. (a) Both A and R are true and R is the correct explanation of A. (b) Both A and R are true but R is not the correct explanation of A. (c) A is true but R is false. (d) A is false but R is true. (e) Both A and R are false. 3 – What happens when a dry blue litmus paper is touched to acid powder? (a) Litmus paper turns red (b) Litmus paper turns green (c) Colour of litmus paper vanishes out (d) No change in the colour of litmus paper 4 – The color of neutral litmus solution is (a) red (b) Blue (c) Purple (d) Yellow 5 – Which one is a suitable method to find the accurate pH value? (a) pH meter (b) pH paper (c) Universal indicator (d) Litmus solution 6 – Which one of the following statements is correct about universal indicators? (a) It is a mixture of HCl and NaOH (b) It is a mixture of many indicators (c) It is a solution of phenolphthalein in alcohol (d) It is a solution of phenolphthalein in water. 7 – NaHCO, formed by reaction of (a) NaOH + H2CO3 (b) NaCl + H2CO3 (c) Na2CO3 + HCl (d) NaOH + Na2CO3 8 – Bases dissociate which ions in their aqueous solution? a. Hydroxide ions b. Hydrogen ions c. Chloride ions d. None of the above.