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Search Results for reaction - All Grades

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Grade 8 Reactions
Which kind of reaction needs energy to continue?
  1. Endothermic Reaction
  2. Exothermic reaction
Grade 10 Reactions
Grade 12 Physics
Hydrogen bomb is based on the principle of                              
  1. Controlled fusion reaction
  2. Uncontrolled fusion reaction
  3. Controlled fission reaction
  4. Uncontrolled fission reaction
Grade 11 Kinetics and Equilibrium
Acid hydrolysis of methyl acetate is an example of a(n)                      .
  1. third-order reaction
  2. zero-order reaction
  3. second-order reaction
  4. first-order reaction
Grade 9 Reactions
A reaction that forms water and a salt is called a                        .
  1. chemical reaction
  2. basic reaction
  3. neutralization reaction
  4. none of the above
Grade 8 Physics
Grade 10 Reactions
CaCo3(s)+Heat -> CaO(s) + CO2 (gas), this reaction is a/an                                   .
  1. endothermic reaction
  2. exothermic reaction
  3. Neither of the above
  4. reaction in which catalyst is used
Grade 12 Physics
Which reaction involves the displacement of copper from copper sulphate by zinc?
  1. Reaction between metals and water
  2. Reaction between metals and acids
  3. Single displacement reaction
  4. No reaction involves copper displacement
Grade 8 Reactions
What would happen if the activation energy for a particular chemical reaction was not available?
  1. The reaction would occur faster.
  2. The reaction would occur slower.
  3. The reaction would not occur.
  4. The reaction would begin sooner.
Grade 9 Macromolecules
What is the primary purpose and function of enzymes, in the context of reactions that occur within living cells?
  1. They lower the active site energy of the reaction.
  2. They lower the speed of the reaction.
  3. They lower the temperature of the reaction.
  4. They lower the activation energy of the reaction.
Grade 10 Reactions
Neutralization reaction is an example of                     .
  1. exothermic reaction
  2. endothermic reaction
  3. oxidation
  4. none of these
Grade 9 Reactions
Grade 10 Reactions
Grade 11 Symptoms, Diagnosis, and Treatments
What is anaphylaxis?
  1. Allergic reaction to items
  2. Allergic reaction to people
  3. Allergic reaction to substances
  4. None of the above
Grade 8 Reactions
What is an exothermic reaction?
  1. a reaction where energy is absorbed
  2. a reaction where energy is released
  3. a reaction where energy is multiplied
  4. a reaction where energy is divided
Grade 10 Bonds and Mixing
Given the equation below:
HCl + energy H + Cl
How can this equation be described?
  1. This reaction is endothermic, and the heat is released.
  2. This reaction is exothermic, and the heat is released.
  3. This reaction is exothermic, and the heat is absorbed.
  4. The reaction is endothermic, and the heat is absorbed.
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