1. Which unit measures force?
A) Joule
B) Newton
C) Watt
D) Pascal
Correct Answer: B) Newton
Explanation: The Newton (N) is the SI unit of force, named after Sir Isaac Newton, who formulated the laws of motion.

2. What is the unit for measuring force in the CGS system?
A) Newton
B) Dyne
C) Watt
D) Joule
Correct Answer: B) Dyne
Explanation: The dyne is a unit of force in the centimeter-gram-second (CGS) system, equivalent to 10^-5 Newtons.

3. Which unit is used to measure temperature on the absolute scale?
A) Celsius
B) Kelvin
C) Fahrenheit
D) Rankine
Correct Answer: B) Kelvin
Explanation: The Kelvin scale is used to measure temperature in scientific contexts, with absolute zero being 0 K.

4. What is the unit for temperature used in most everyday applications?
A) Kelvin
B) Celsius
C) Fahrenheit
D) Rankine
Correct Answer: B) Celsius
Explanation: The Celsius scale is widely used for measuring temperature in most parts of the world.

5. Which unit measures temperature based on the freezing and boiling points of water?
A) Kelvin
B) Fahrenheit
C) Celsius
D) Joule
Correct Answer: B) Fahrenheit
Explanation: The Fahrenheit scale measures temperature, with 32°F being the freezing point and 212°F being the boiling point of water.

6. Which unit is used to measure electric current?
A) Ohm
B) Ampere
C) Watt
D) Volt
Correct Answer: B) Ampere
Explanation: The ampere (A) is the SI unit of electric current, named after André-Marie Ampère, a pioneer in electromagnetism.

7. What is the unit used to measure electric charge?
A) Coulomb
B) Ampere
C) Volt
D) Ohm
Correct Answer: A) Coulomb
Explanation: The Coulomb (C) is the unit of electric charge, named after Charles-Augustin de Coulomb.

8. Which unit measures electrical resistance?
A) Volt
B) Ampere
C) Ohm
D) Watt
Correct Answer: C) Ohm
Explanation: The ohm (Ω) is the unit of electrical resistance, named after Georg Simon Ohm.

9. What unit is used to measure heat or energy?
A) Watt
B) Joule
C) Newton
D) Decibel
Correct Answer: B) Joule
Explanation: The joule (J) is the SI unit of energy, named after James Prescott Joule.

10. What is the unit of energy commonly used in heating systems?
A) Watt
B) Joule
C) BTU
D) Calorie
Correct Answer: C) BTU
Explanation: The British thermal unit (BTU) is a unit of energy used primarily to measure the energy content of fuels and heating systems.

11. Which unit measures pressure?
A) Watt
B) Pascal
C) Ampere
D) Joule
Correct Answer: B) Pascal
Explanation: The pascal (Pa) is the SI unit of pressure, named after Blaise Pascal.

12. What is the unit of power?
A) Watt
B) Ampere
C) Newton
D) Joule
Correct Answer: A) Watt
Explanation: The watt (W) is the SI unit of power, named after James Watt, and is used to measure energy conversion or rate of work.

13. Which unit is used to measure distance in astronomy?
A) Light Year
B) Kilometer
C) Meter
D) Parsec
Correct Answer: A) Light Year
Explanation: A light year is a unit of distance used in astronomy, defined as the distance light travels in one year (approximately 9.46 trillion kilometers).

14. What is the unit for measuring volume?
A) Liter
B) Gallon
C) Meter
D) Watt
Correct Answer: A) Liter
Explanation: The liter (L) is the unit of volume used in the metric system, commonly used to measure liquids and gases.

15. Which unit measures the intensity of sound?
A) Watt
B) Decibel
C) Ampere
D) Joule
Correct Answer: B) Decibel
Explanation: The decibel (dB) is a unit used to measure the intensity of sound or the power level of an electrical signal.