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- 1. Multiple Choice
1. Downward arrow in a chemical equation indicates.
Direction
Gas
Precipitation
No reaction
- 2. Multiple Choice
2. If some amount of energy is released in chemical reaction then it is called .......reaction.
Exothermic
Endothermic
Oxidation
Reduction
- 3. Multiple Choice
3. Chemical reactions occur with the .......of chemical bonds.
Formation
Breaking
Both the above
None
- 4. Multiple Choice
4. Burning of liquid petroleum gas is a ..........change.
Physical
Chemical
Both
None
- 5. Multiple Choice
5. The substances that are present on the left side of a chemical equation are called.
Reactants
Products
Precipitate
Gases
- 6. Multiple Choice
6. In exothermic reaction heat energy is ............
Absorbed
Created
Released
Changed
- 7. Multiple Choice
7. Burning of magnesium crackers is a reaction of........
Reduction
Cracking
Oxidation
Galvanizing
- 8. Multiple Choice
8. Unbalanced equation is called........
Basic equation
Skeleton equation
Stoichiometric equation
Fundamental equation
- 9. Multiple Choice
9. The process of preparing slaked lime by adding water to quicklime is this type of reaction.
Decomposition
Exothermic
Endothermic
Displacement
- 10. Multiple Choice
10. Which of the following is the colour of COPPER SULPHATE.
Red
White
Yellow
Blue
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