Practice Sheets & enote-Chemical Reaction & Equations

Chemical reaction and equations worksheet-4

Multiple Choice Questions:

11. What is the chemical formula of -Nickel ion and Carbonate ion.

(A) Ni+CO₃^–         (B) Ni+CO₃^2–        (C) Ni²⁺CO₃^2–       (D) Ni⁴⁺CO₃^3–

12. What is the chemical formula of  -Ammonium ion and oxide ion

(A) NH₄^– O₂^–        (B) NH₃^– O₂^2–       (C) NH₄⁺ O₂^–        (D) NH₄⁺ O₂

Chemical reaction and equations worksheet-5

Multiple Choice Questions:

21. These symbols represent (s), (l), (g), (aq) ___________

  (A)Solid, gas liquid, aqueous          (B) Gas, solid, liquid, aqueous

       (C) Aqueous, liquid, gas, solid        (D) Solid, liquid, gas, aqueous

22. Silver Chloride turns grey in sunlight due to

       (A) Combination reaction               (B) Photodecomposition

Chemical reaction and equations worksheet-6

Multiple Choice Questions:

31. What is the chemical formula -Calcium ion and bicarbonate ion

(A) Ca²⁺ HCO₃^2–   (B) Ca⁺ HCO₃^–      (C) Ca²⁺ HCO₃^–     (D) Ca⁺ HCO₃^2–

(E) Ca³⁺ HCO₃^2–

32. What is the chemical formula of -Magnesium ion and bromide ion -

(A) Mg²⁺ Br^–         (B) Mg⁺ Br^–           (C) Mg²⁺ Br^2–       (D) Mg³⁺ Br^–