Chemical Reactions & Equations Chapter 1 Student Worksheet ...

Formative Assessment Manual for Teachers Chemicals Reactions & Equations - Chapter 1
Q4. White silver chloride changes to grey in sunlight because of the formation of silver
metal along with the evolution of chlorine gas. Identify the chemical equation that
gives a correct representation of the process.
A. 2AgCl 2Ag + Cl 2 B. AgCl Ag + Cl 2
C. 2Ag + Cl 2 2AgCl D. Ag + Cl 2 2AgCl
Q5. When copper oxide is treated with hydrogen gas copper is produced along with water.
The balanced chemical equation for the given reaction is
CuO + H 2 Cu + H 2 O
Which substance is oxidized in the given reaction?
A. H 2 B. Cu C. H 2 O D. CuO
Q6. The balanced chemical equation for the reaction of nitrogen with hydrogen to produce
Ammonia gas is-
A. N 2 (g) + H 2 (g) 2NH 3 (g) B. 2N 2 (g) + H 2 (g) 2NH 3 (g)
C. N 2 (g) + 3H 2 (g) 2NH 3 (g) D. 2N 2 (g) + H 2 (g) 2NH 3 (g)
Q7. Identify the chemical equation that correctly represents production of magnesium nitride
by burning magnesium metal in a pure nitrogen atmosphere from the following–
A. Mg3N2 (s) Mg(g) + N2 (g) B. Mg + N2 Mg3N2 C. 3Mg(g)N2 (g) Mg3N2 (g) D. Mg3N2 3Mg + N2 Q8. Which of the following reactions represents a combination reaction?
A. CaO(s) + H2O(g) Ca(OH) 2 (aq)
B. CaCO3 (s) CaO(s) + CO2 (g)
C. Zn + CuSO4 (aq) ZnSO4 (aq) + Cu(s)
D. 2FeSO4 (s) Fe2O3 (s) + SO2 (g) + SO3 (g)
Q9. Complete the following statement by choosing correct type of reaction for x and y.
Statement 1: The heating of lead nitrate is an example of 'x' reaction
Statement 2: The burning of magnesium is an example of 'y' reaction.”
A. x y
combination decomposition
B. x y
decomposition combination
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