Online Test of Chapter 1 Chemical Reactions and Equations 2 Science| Class 10th
1. Write values of a,b,c and d so that following chemical equation is balanced
aAl + bHCl → cAlCl3 + dH2
(i) a=1,b=3,c=1,d=3
(ii) a=2,b=6,c=2.d=2
(iii) a=2,b=6,c=2,d=3
(iv) a=2,b=3,c=2,d=3
2. Which of the following reactions satisfies this condition? :
Iron nails kept with dilute sulphuric acid and ferric sulphite solution is formed and hydrogen gas is released.
(i) 2Fe(s) + 3H2 SO4(l)→ Fe2 (SO4)3(l) + 3H2(g)
(ii) 2Fe(s) + 2H2SO4(aq) → Fe2(SO4)3(s) + 4H2 (g)
(iii) 2Fe(s) + 2H2SO4 (aq) → 3Fe2(SO4)3(aq) + 2H2(g)
(iv) 2Fe(s)+3H2SO4 (aq) → Fe2(SO4)3 (aq) + 3H2 (g)
3. The LPG gas which we use in our home is basically butane gas(C4H10) . It is burnt in presence of air. This is an exothermic reaction and energy released is used to cook. Carbon di oxide gas and steam is product for this reaction. Which of the following represents proper chemical equation for this process?
(i) C4H10 (g) + 3O2 (g) → 4CO2 (g) + 5H2O
(ii) 2C4H10 (g) + 11O2 (g) → 7CO2 (g) + 10H2O(l)
(iii) 2C4H10 (g) + 13O2 (g) → 8CO2 (g) + 10H2O(g)
(iv) 2C4H10 (g) + 11O2 (g) → 7CO2 (g) + 10H2O(g)
4. The main component of Biogas is methane (CH4). It burns to generate energy. The carbon di oxide gas and water in gaseous form is obtained as product of combustion of methane. Which of the following represents the chemical reaction properly?
(i) CH4 (g) + 2O2(g) → CO2(g) + 2H2O(g)
(ii) 2CH4 (g) + 4O2(g) → 2CO2(g)+ 2H2O(g)
(iii) 2CH4 + 3O2 → CO2 +2H2O(l)
(iv)CH4 + 2O2 → CO2 + 2H2O(l)
5. Calcium oxide reacts with water to form calcium Hydroxide. Which type of reaction is this?
(i) Combination and endothermic reaction
(ii) Combination and exothermic reaction
(iii) Decomposition and Endothermic reaction
(iv) Decomposition and exothermic reaction
6. Combustion of methane gas is
(i) Exothermic Reaction
(ii) Endothermic Reaction
(iii) Combination Reaction
(iv) Both (i) and (ii)
7. What kind of reaction respiration is
(i) Exothermic Process
(ii) Endothermic Process
(iii) Decomposition Reaction
(iv) Both (ii) and (iii)
8. A smell of burning sulphur is obtained when Ferrous sulphate is heated. Why?
(i) Evolution of Sulphur tri oxide
(ii) Formation of Ferric Oxide
(iii) Formation of Ferrous sulphate
(iv) None
9. Which of the following is/are uses of Calcium Carbonate?
(i) White washing
(ii) Marble manufacturing
(iii) Building material
(iv) All
10. On thermal decomposition of lead nitrate, nitrogen dioxide gas is evolved. How it presence can be verified?
(i) It will turn lime water milky
(ii) Rotten egg odour
(iii) Brown fumes can be observed
(iv) Reddish fume is observed.
Chapter 1 Chemical Reactions and Equations Quiz 2| Class 10th
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Question 1 of 10
1. Question
Write values of a,b,c and d so that following chemical equation is balanced
aAl + bHCl → cAlCl3 + dH2Correct
Incorrect
-
Question 2 of 10
2. Question
Which of the following reactions satisfies this condition? :
Iron nails kept with dilute sulphuric acid and ferric sulphite solution is formed and hydrogen gas is released.Correct
Incorrect
-
Question 3 of 10
3. Question
The LPG gas which we use in our home is basically butane gas(C4 H10) . It is burnt in presence of air. This is an exothermic reaction and energy released is used to cook. Carbon di oxide gas and steam is product for this reaction. Which of the following represents proper chemical equation for this process?
Correct
Incorrect
-
Question 4 of 10
4. Question
The main component of Biogas is methane (CH4). It burns to generate energy. The carbon di oxide gas and water in gaseous form is obtained as product of combustion of methane. Which of the following represents the chemical reaction properly?
Correct
Incorrect
-
Question 5 of 10
5. Question
. Calcium oxide reacts with water to form calcium Hydroxide. Which type of reaction is this?
Correct
Incorrect
-
Question 6 of 10
6. Question
Combustion of methane gas is
Correct
Incorrect
-
Question 7 of 10
7. Question
What kind of reaction respiration is
Correct
Incorrect
-
Question 8 of 10
8. Question
A smell of burning sulphur is obtained when Ferrous sulphate is heated. Why?
Correct
Incorrect
-
Question 9 of 10
9. Question
Which of the following is/are uses of Calcium Carbonate?
Correct
Incorrect
-
Question 10 of 10
10. Question
On thermal decomposition of lead nitrate, nitrogen dioxide gas is evolved. How it presence can be verified?
Correct
Incorrect