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Question 1:

What is the purpose of precision weighing techniques?

A) To measure weight with high accuracy
B) To measure weight with low accuracy
C) To measure volume instead of weight
D) To measure temperature instead of weight

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Explanation: The correct answer is A) To measure weight with high accuracy. Precision weighing techniques are used to measure weight with high accuracy and precision. These techniques involve the use of specialized weighing instruments and procedures to minimize errors and uncertainties in weight measurements.

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Question 2:

Which weighing technique involves using an analytical balance?

A) Gravimetric analysis
B) Spring scale measurement
C) Triple beam balance
D) Digital scale measurement

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Explanation: The correct answer is A) Gravimetric analysis. Gravimetric analysis involves using an analytical balance, which is a highly precise and sensitive instrument, to measure the mass of a substance. This technique is commonly used in quantitative chemical analysis where the mass of a compound or an element is determined.

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Question 3:

Which technique allows for the determination of small mass differences?

A) Volumetric analysis
B) Microbalance measurement
C) Visual inspection
D) Rough estimation

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Explanation: The correct answer is B) Microbalance measurement. Microbalance measurement refers to the use of a microbalance, an extremely sensitive weighing instrument, to determine small mass differences. It is commonly employed in scientific research, pharmaceuticals, and analytical chemistry where high precision and accuracy are required.

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Question 4:

Which technique is commonly used in pharmaceutical quality control for precise weighing?

A) Tare weighing
B) Bulk weighing
C) Analytical weighing
D) Comparative weighing

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Explanation: The correct answer is C) Analytical weighing. Analytical weighing is commonly used in pharmaceutical quality control for precise weighing of active pharmaceutical ingredients and excipients. It ensures accurate formulation of medications and adherence to quality standards by carefully measuring small quantities of substances.

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Question 5:

What is the importance of temperature and environmental conditions in precision weighing?

A) Temperature has no effect on weighing
B) Temperature affects the accuracy of weighing
C) Environmental conditions affect the sensitivity of weighing instruments
D) Both temperature and environmental conditions are irrelevant in precision weighing

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Explanation: The correct answer is B) Temperature affects the accuracy of weighing. Temperature can affect the accuracy of weighing as most weighing instruments, especially electronic balances, are sensitive to temperature variations. Environmental conditions, including humidity and air currents, can also impact the performance and sensitivity of weighing instruments. It is important to consider and control these factors to ensure accurate and precise measurements.