Factors Affecting Weighing Balance Quiz

What is the measure of the earth's gravitational force exerted on a quantity of matter?

• Density

• Volume

• Weight

• Mass

What is the purpose of calibration for weighing instruments?

• To clean the instrument

• To adjust the color of the instrument

• To measure the temperature of the instrument

• To ensure the instrument accurately weighs objects

Which factor can affect the accuracy of balances by causing fluctuation of readings?

• Dust and Fumes

• Vibration

• Magnetic field

• Humidity change

What is the difference between precision and accuracy?

• Precision is the variation arising when all efforts are made to keep conditions constant, accuracy is the difference between real and displayed value

• Precision is the variation arising using the same measurement process among different instruments and operators, accuracy is the variation arising when all efforts are made to keep conditions constant

• Precision is the difference between real and displayed value, accuracy is the variation arising when all efforts are made to keep conditions constant

• Precision is the difference between single values, accuracy is the variation arising using the same measurement process among different instruments and operators

What is the purpose of the 'taring' operation in weighing?

• To adjust the level of the balance

• To zero the display

• To measure the temperature of the sample

• To clean the weighing pan

Which type of balance is used for accurate weighing and has a chamber housing pan with transparent walls for easy viewing?

• Traditional scale

• Analytical balance

• Postal scale

• Electronic top loading balance

What is the purpose of using an analytical balance?

• To adjust the color of the instrument

• To achieve qualitative objectives

• To measure the temperature of the sample

• To achieve quantitative objectives

What is the purpose of ensuring the weighing area is free from dust and fumes?

• To prevent corrosion of the balance

• To adjust the level of the balance

• To measure the temperature of the sample

• To ensure the instrument accurately weighs objects

What is the basic unit of mass expressed in ?

• grams
• kilograms

• pounds

• inches

Weighing balance should be placed in an non airconditioned area to achieve stable temperature and humidity.

• Yes

• No