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Mastering Laboratory Balances Quiz

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Questions and Answers

What is the purpose of the adjustment knob on a triple beam balance?

To attain greater accuracy while measuring the weight of an object (correct)
To reset the zero point of the balance
To calibrate the balance for different types of objects
To lock the balance in place during measurement

What is the principle behind digital or electronic balance?

Magnetic Induction
Electromagnetic Force (correct)
Centrifugal Force
Gravitational Pull

What is the purpose of the rider on a triple beam balance?

To reset the zero point of the balance
To calibrate the balance for different types of objects
To determine the object's mass (correct)
To lock the balance in place during measurement

How does a single pan balance differ from a double pan balance?

Arms are unequal in length (A) Signup and view all the answers

What is the function of the pointer on a triple beam balance?

To indicate when the balance is in equilibrium (B) Signup and view all the answers

What are the two types of laboratory balances mentioned in the text, and how do they differ in terms of their design and use?

The two types of laboratory balances mentioned in the text are the double pan balance (direct comparison) and the single pan balance (substitution). The double pan balance has a single beam with arms of equal length, and standard weights are manually added to the right side to counterbalance the object weight. In contrast, the single pan balance has arms of unequal length, and the object is placed on the short arm pan with a restoring force mechanically applied to the other arm until the indicator is balanced. Signup and view all the answers

What are the main parts of a triple beam balance, and what are their functions?

The main parts of a triple beam balance are the base, pan, adjustment knob, pointer, triple beams, and rider. The base is a solid metal platform that supports the rest of the parts. The pan is where the object to be weighed is placed. The adjustment knob can be turned to attain greater accuracy while measuring the weight of an object. The pointer is present on the right-hand side of the triple beam balance. The triple beams comprise three beams that are individually used to determine the mass of an object, and the rider is used to move along the length of the beam to determine the object's mass. Signup and view all the answers

What is the principle behind the digital or electronic balance, and what are its advantages over other types of balances?

The principle behind the digital or electronic balance is electromagnetic force. It can weigh as little as 0.1 ug (0.00001g) and is used for most critical weighing. The advantages of digital or electronic balance include high precision, ease of use, and the ability to measure very small weights accurately. Signup and view all the answers

What are some safety and quality assurance practices mentioned in the text for using laboratory balances?

Some safety and quality assurance practices mentioned in the text for using laboratory balances include keeping balances clean and wiping up any spills immediately. Signup and view all the answers

What is the function of the triple beam balance's rider, and how is it used to determine the mass of an object?

The rider on a triple beam balance is used by the user to move along the length of the beam to determine the object's mass. It is used to achieve balance in conjunction with the triple beams, allowing for the accurate measurement of an object's mass. Signup and view all the answers