Science Practice Quiz 245

Q1.What is the term used to describe substances that burn in air?

A. Inflammable B. Combustible C. Flammable D. Ignitable

Q2.What is essential for combustion to occur?

A. Heat B. Light C. Oxygen D. Fuel

Q3.What is released during the process of combustion?

A. Only heat B. Only light C. Heat and light D. Neither heat nor light

Q4.What is the term used to describe the lowest temperature at which a combustible substance catches fire?

A. Melting point B. Boiling point C. Ignition temperature D. Flash point

Q5.Why are inflammable substances dangerous?

A. They have high ignition temperature B. They have low ignition temperature C. They are expensive D. They are rare

Q6.Why cannot water be used to control fires involving electrical equipment or oils?

A. Water is not effective B. Water is expensive C. Water can conduct electricity D. Water is not available

Q7.What are the different types of combustion?

A. Rapid combustion and spontaneous combustion B. Rapid combustion, spontaneous combustion, explosion, etc. C. Slow combustion and rapid combustion D. Incomplete combustion and complete combustion

Q8.What are the different zones of a flame?

A. Dark zone and luminous zone B. Luminous zone and non-luminous zone C. Dark zone, luminous zone, and non-luminous zone D. Only one zone

Q9.What are the characteristics of an ideal fuel?

A. It is expensive and difficult to transport B. It has low calorific value and pollutes the environment C. It is cheap, readily available, readily combustible, and easy to transport, and has high calorific value D. It is rare and has low ignition temperature

Q10.What is the unit used to express fuel efficiency?

A. Kilowatt per hour B. Kilojoule per kg C. Kilogram per liter D. Liter per kilogram

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Science Practice Quiz 245