Introduction to Metrology and Measurement: MCQs for RRB Pharmacist 2024

Metrology, the science of measurement, plays a crucial role in various fields, including pharmaceuticals. It ensures accurate, consistent, and reliable results in the measurement of substances, quantities, and dimensions, which are critical in drug development, quality control, and patient care. For those preparing for the RRB Pharmacist 2024 exam, a solid understanding of metrology is essential. In this blog post, we’ll explore key concepts of metrology and introduce some multiple-choice questions (MCQs) to aid in your exam preparation.

What is Metrology?

Metrology refers to the science of measurement, covering all theoretical and practical aspects of measurement systems and standards. It involves the development of measurement units, ensuring measurement accuracy, and verifying that instruments used are properly calibrated.

Types of Metrology

• Scientific Metrology: Focuses on establishing units of measurement, maintaining international standards, and researching new measurement techniques.
• Industrial Metrology: Ensures the correct functioning of measurement instruments used in manufacturing, production, and quality control.
• Legal Metrology: Concerns regulations and standards related to measurements, particularly where they affect health, safety, and trade.

Importance of Metrology in Pharmacy

In the pharmaceutical industry, metrology is critical for:

• Ensuring Accuracy: Proper measurement of chemical compounds ensures that medication is effective and safe for patients.
• Maintaining Standards: Pharmacies need to follow strict standards to maintain the consistency and quality of drugs.
• Compliance: Metrology ensures adherence to legal regulations, which is crucial for avoiding penalties and ensuring product safety.

Key Concepts in Metrology for Pharmacists

1. Units of Measurement: Understanding SI units, conversions, and dimensional analysis is essential.
2. Precision and Accuracy: Pharmacists must ensure accurate measurements in dosage formulations.
3. Calibration of Instruments: Regular calibration ensures the reliability of measuring devices, from balances to volumetric glassware.
4. Error and Uncertainty: Learning how to identify and minimize errors in measurement is key in pharmaceutical applications.

Sample MCQs on Metrology for RRB Pharmacist 2024

Introduction to Metrology and Measurement MCQs for RRB Pharmacist 2024

Metrology is the science of measurement, involving the establishment, verification, and application of units of measurement. It ensures accuracy, precision, and reliability in various fields, including engineering, manufacturing, and scientific research. Metrology covers three main areas: scientific metrology, industrial metrology, and legal metrology, each focused on different aspects of measurement systems, instrumentation, and standards to maintain uniformity and improve quality control.

1 / 25

Calculate the displacement value of zinc oxide in cocoa butter suppositories containing 40% of zinc oxide and is prepared in a 1 g mould. The weight of 8 suppositories is 11.74g

5

6

8

12

2 / 25

Find out the concentration of NaCl required to make 50 ml of isotonic solution containing 0.5% ephedrine HCI

0.644 g

0.322 g

3.12 g

3.23 g

3 / 25

Calculate the volume of 95% alcohol required to prepare 600 ml of 70% alcohol

442.10 ml

700 ml

157.90 ml

182.05 ml

4 / 25

What is the dose of a boy of 16 years ago when the adult dose of drug is 100 mg

8 mg

0.8 mg

80 mg

1.2 g

5 / 25

One drop in ml

0.06 ml

0.06 ml

0.66 ml

1.0ml

6 / 25

What would be the concentration of anhydrous dextrose needed to produce a solution isotonic with blood?

2%

5.4%

 0.9%

10%

7 / 25

Proof spirit is

57.1%v/v

58.91%v/v

57.79%w/v

57.01%w/w

8 / 25

Calculate the amount of 95% alcohol required to prepare 400 ml of 45% alcohol

19.0 ml

170 ml

190 ml

202 ml

9 / 25

Calculate the real strength of 30° over proof and 40° underproof

74.15% and 34.23% respectively

34.15% and 34.23% respectively

74.15% and 4.23% respectively

34.15% and 74.23% respectively

10 / 25

The proof strength of 80% v/v ethanol is equal to

 

57.77° over proof

57.77° under proof

40.24° over proof

22.21° over proof

11 / 25

The proof strength of 60% v/v ethanol is equal to

5.18° IP

5.18° UP

6.13° IP

6.13° UP

12 / 25

The dilution and concentrated mouthwashes are in the ratio of

 

1:5

1:2

1:1

5:1

13 / 25

Find the concentration of NaCl required to render a 1.5% solution of lidocaine HCI Iso-osmotic with blood plasma. [The freezing point of a 1% w/v solution of lidocaine HCI is 0.122°C, and that of 1% w/v solution of NaCl is – 0.576°C.]

0.485% w/v

0.585% w/v

0.377% w/v

0.768% w/v

14 / 25

Convert 132 pounds to kilograms

40 kg

60 kg

80 kg

100 kg

15 / 25

Calculate the dose for a child that has a body surface area of 0.57 m², when the adult dose of a drug is 50 mg

40 ml

400 ml

20 ml

10 ml

16 / 25

How do you calculate the ideal body weight for man?

50 kg ± 1kg/2.5cm above or below 150 cm in height

45 kg ± 1kg/2.5cm above or below 150 cm in height

40 kg ± 1kg/2.5cm above above or below 150 cm in height

35 kg ± 1kg/2.5cm above or below 150 cm in height

17 / 25

 In apothecaries, the standard unit for weight is

Grain

Drachm

Pound

Scruple

18 / 25

Calculate the % of NaCl required to render a 0.5% solution of KCI isotonic with blood plasma. NaCl equivalent of 0.5% KCl = 0.76.

0.52

0.11

0.22

None

19 / 25

One teaspoonful is equal to

4 ml

8 ml

3 ml

6 ml

20 / 25

1% w/w dextrose means

1 gram dextrose in 100 grams of product

1 gram dextrose in 100 ml of product

1 mole in 100 ml of product

None of the above

21 / 25

Syrups USP contains 85% w/v sucrose and has a specific gravity of 1.313. Express the concentration of sucrose in terms of% w/w.

65%

75%

55%

85%

22 / 25

What concentration of NaCl is isotonic to blood plasma

0.5 w/w

0.9% w/v

1.5% w/v

1.2% w/v

23 / 25

Find the strength of 95% v/v alcohol in terms of proof spirit

66.53° 1. P

95° U.P

45° U.P

20° U.P

24 / 25

Calculate the amount of 70%, 60%, 40% and 30% alcohol should be mixed to get 50% alcohol

20, 10, 20 parts respectively

20, 10, 10, 10 parts respectively

20, 20, 20, 20 parts respectively

10, 10, 10, 10 parts respectively

25 / 25

Powders used for external use are

Dusting powders

Bulk powders

Divided powders

Effervescent powders

Your score is

The average score is 24%

0%

Restart quiz

Final Thoughts

Metrology ensures the foundation of accurate measurements, which is essential for pharmacists to maintain the safety and effectiveness of medications. For the RRB Pharmacist 2024 exam, a thorough understanding of these concepts is key to performing well, especially when answering technical questions about measurement systems, calibration, and legal standards.Regular practice with MCQs and reviewing fundamental concepts in metrology can boost your confidence and enhance your exam performance. Stay consistent with your studies and practice these questions to solidify your knowledge for the upcoming exam!

Good luck with your RRB Pharmacist 2024 exam preparation!

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