Acid Bases and Salts

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Acid Bases and Salts - 04

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Q1. Sodium carbonate is a basic salt because it is a salt of a - *

1 point

(a) strong acid and strong base

(b) weak acid and weak base

(d) weak acid and strong base

Q2. Alkalis are - *

1 point

(a) acids, which are soluble in water

(b) acids, which are insoluble in water

(d) bases, which are soluble in water

Q3. Which of the following statements is correct about an aqueous solution of an acid and of a base? (i) Higher the pH, stronger the acid (ii) Higher the pH, weaker the acid (iii) Lower the pH, stronger the base (iv) Lower the pH, weaker the base *

1 point

(a) (i) and (iii)

(b) (ii) and (iii)

(d) (ii) and (iv)

Q4. pH of H20 is - *

1 point

Q5. Ag2S reacts with H2SO4 to form - *

1 point

(a) AgSO4

(b) Ag2SO4 + H2S

(c)Ag2O + H3S

(d) AgOH + H2S

Q6. Which of the following is used for dissolution of gold ? *

1 point

(a) Hydrochloric acid

(b) Sulphuric acid

(d) Aqua regia

Q7. Which among the following is not a base? *

1 point

(a) NaOH

(b) KOH

(d) C2H5OH

Q8. Which one of the following can be used as an acid-base indicator by a visually impared (blind) student ? *

1 point

(a) Litmus

(b) Turmeric

(d) Phenolphthalein

Q9. What is the pH value of solution of sodium chloride? *

1 point

7 (seven)

More than 7 (seven)

Less than 7 (seven)

Zero

Q10. If the pH value of a solution is 6, then solution will be of what type? *

1 point

Strong acid

Strong base

Mild acid

Mild base

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