School Quizzes

Maharashtra State Board School Quizzes

Quiz on Chemical Reactions and their Types (General Science)

Vincent Augustine D'Souza

Standard Eight Science

1. What is a combination reaction?

A chemical reaction in which a single compound is formed from two or more reactants.
A reaction in which two gases combine into a liquid.
Melting of ice due to heat.
Evaporation of water.
Correct Answer: A chemical reaction in which a single compound is formed from two or more reactants.

2. In which reaction a substance breaks down into two or more substances?

Displacement
Debasement
Decomposition
Desilting
Correct Answer: Decomposition

3. What is oxidation?

combining with carbon
combining with oxygen
combining with chlorine
combining with nitrogen
Correct Answer: combining with oxygen

4. What is reduction?

combining with helium
combining with argon
combining with cobalt
combining with hydrogen
Correct Answer: combining with hydrogen

5. What speeds up a chemical reaction?

accelerator
water
catalyst
ice
Correct Answer: catalyst

6. What is a reaction during which heat is given out called?

exothermic reaction
acerbic reaction
hostile reaction
friendly reaction
Correct Answer: exothermic reaction

7. What is a reaction during which heat is absorbed called?

positive reaction
endothermic reaction
negative reaction
hypodermic reaction
Correct Answer: endothermic reaction

Originally posted 2015-11-24 10:54:57.