12 Questions
What type of reaction takes place when calcium hydroxide (Ca(OH)2) reacts with carbon dioxide (CO2) to form calcium carbonate (CaCO3) and water (H2O)?
Combination reaction
In the reaction where carbon (C) burns in the presence of oxygen (O2) to form carbon dioxide (CO2), what type of reaction is this?
Combustion reaction
What type of reaction takes place when hydrogen (H2) and oxygen (O2) combine to form water (H2O)?
Combination reaction
What is the formula for the balanced chemical equation when methane (CH4) burns in the presence of oxygen (O2) to form carbon dioxide (CO2) and water (H2O)?
CH4 + 2O2 → CO2 + 2H2O
Which of the following chemical reactions is an example of an exothermic reaction?
All of the above
What is the balanced chemical equation for the reaction where glucose (C6H12O6) reacts with oxygen (O2) to produce carbon dioxide (CO2), water (H2O), and energy?
C6H12O6 + 6O2 → 6CO2 + 6H2O + energy
What type of reaction is represented by the equation: CaO(s) + H2O(l) → Ca(OH)2(aq) + Heat?
Combination reaction
Which of the following statements is true about the reaction between calcium oxide and water?
It is an exothermic reaction
What is the chemical formula of slaked lime?
Ca(OH)2
Which of the following reactions occurs when slaked lime is exposed to air over time?
Ca(OH)2(aq) + CO2(g) → CaCO3(s) + H2O(l)
What is the chemical formula for marble?
CaCO3
What is the purpose of whitewashing walls with slaked lime?
To provide a shiny finish
Learn about the types of chemical reactions involving the breaking and making of bonds between atoms to create new substances. Dive into combination reactions and more in this quiz from Class IX Chapter 3 and 4.
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