1. Assertion(A): Quicklime reacts vigorously with water releasing a large amount of heat. Reason(R): The above chemical reaction is an exothermic reaction
b. O
2. Assertion (A): Fe₂O, + 2A1
The above chemical equation is an
d. O
Al₂O; + 2Fe example of displacement reaction.
Reason (R): Aluminium being more reactive than Iron(Fe), displaces Iron(Fe) from its oxide.
a
b.
d.
O
Assertion(A): White silver chloride turns grey in sunlight. Reason (R): Decomposition of silver chloride in presence of sunlight takes place to form silver metal and chlorine gas.
b.
c.
d.
4. Assertion(A): The balancing of chemical equations is based on law of conservation of mass.
Reason (R): Total mass of reactants is equal to O
a O
c.
total mass O
5. Assertion(A): Respiration is an exothermic reaction.
Reason(R): Respiration is a process in which glucose combines with oxygen and decompose
a O
to carbon dioxide and water. This reaction also release some energy. b. O
Multiple choice questions:
d. O
Darken the circle against the correct option of the following questions (6-10) with pencil/pen:
1X5
6. Combustion of methane is an example of a. Exothermic reaction O
b. Endothermic reaction
c. Combustion
d. Decomposition reaction.
when you don't understand stand this please watch the obove
please answer this if you know 100 percent
Answers
Answer:
1. Assertion(A): Quicklime reacts vigorously with water releasing a large amount of heat. Reason(R): The above chemical reaction is an exothermic reaction
b. O
2. Assertion (A): Fe₂O, + 2A1
The above chemical equation is an
d. O
Al₂O; + 2Fe example of displacement reaction.
Reason (R): Aluminium being more reactive than Iron(Fe), displaces Iron(Fe) from its oxide.
a
b.
d.
O
Assertion(A): White silver chloride turns grey in sunlight. Reason (R): Decomposition of silver chloride in presence of sunlight takes place to form silver metal and chlorine gas.
b.
c.
d.
4. Assertion(A): The balancing of chemical equations is based on law of conservation of mass.
Reason (R): Total mass of reactants is equal to O
a O
c.
total mass O
5. Assertion(A): Respiration is an exothermic reaction.
Reason(R): Respiration is a process in which glucose combines with oxygen and decompose
a O
to carbon dioxide and water. This reaction also release some energy. b. O
Multiple choice questions:
d. O
Darken the circle against the correct option of the following questions (6-10) with pencil/pen:
1X5
6. Combustion of methane is an example of a. Exothermic reaction O
b. Endothermic reaction
c. Combustion
d. Decomposition reaction.
when you don't understand stand this please watch the obove
please answer this if you know 100 percent
Y