Basic Unit conversions in Properties of fluids – MCQ Set with Explanations

 Basic Unit Conversions in Properties of Fluids 

 

1. Convert 1 g/cm³ to kg/m³

• A) 1

• B) 10

• C) 100

• D) 1000

Answer: D Explanation: 1${\text{g/cm}}^3=1000{\text{kg/m}}^3$

 

2. Convert 1 Pa to N/m²

• A) 0.1

• B) 1

• C) 10

• D) 100

Answer: B Explanation: 1 Pascal is defined as 1 N/m².

 

3. Convert 1 m²/s to cm²/s

• A) 10

• B) 100

• C) 1000

• D) 10,000

Answer: D Explanation: 1${\text{m}}^2=10,000{\text{cm}}^2$

4. Convert 1 Poise to Pa·s

• A) 0.001

• B) 0.01

• C) 0.1

• D) 1

Answer: C Explanation: 1 Poise = 0.1 Pa·s.

 

5. Convert 1 centipoise (cP) to Pa·s

• A) ${\mathrm{10^}}^{-1}$

• B) ${\mathrm{10^}}^{-2}$

• C) ${\mathrm{10^}}^{-3}$

• D) ${\mathrm{10^}}^{-4}$

Answer: C Explanation: 1 cP = ${10}^{-3}$ Pa·s.

 

6. Convert 1 m of water column to kPa

• A) 0.98

• B) 9.81

• C) 98.1

• D) 981

Answer: B Explanation: Pressure head: $p=\rho gh=1000\times 9.81\times 1=9810\text{ Pa}=9.81\text{ kPa}$

 

7. Convert 1 bar to Pa

• A) ${\mathrm{10^}}^3$

• B) ${\mathrm{10^}}^4$

• C) ${\mathrm{10^}}^5$

• D) ${\mathrm{10^}}^6$

Answer: C Explanation: 1 bar = ${\mathrm{10^}}^5$ Pa.

 

8. Convert 1 kgf/cm² to kPa

• A) 98.1

• B) 9.81

• C) 981

• D) 100

Answer: A Explanation: 1 kgf/cm² = 98.1 kPa.

 

9. Convert 1 m³ to liters

• A) 10

• B) 100

• C) 1000

• D) 10,000

Answer: C Explanation: 1 m³ = 1000 liters.