Nokea
How many milliliters are in 1 ounce?
- A. 20 ml
- B. 30 ml
- C. 40 ml
- D. 50 ml
Correct Answer: B
Rationale: The correct answer is B: 30 ml. 1 ounce is equivalent to 30 milliliters. This conversion is a common one in many contexts involving liquid measurements. Choice A (20 ml), Choice C (40 ml), and Choice D (50 ml) are incorrect conversions and do not represent the accurate conversion between ounces and milliliters.
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What is 0.075 mg in mcg?
- A. 0.075 mcg
- B. 7.5 mcg
- C. 0.75 mcg
- D. 750 mcg
Correct Answer: D
Rationale: To convert milligrams to micrograms, you need to multiply by 1000 since 1 mg = 1000 mcg. Therefore, 0.075 mg equals 75 * 1000 = 750 mcg. The correct answer is 750 mcg. Choices A, B, and C are incorrect because they do not apply the correct conversion factor of 1000. It is essential to understand these conversions, especially in medical settings where accurate dosing is crucial to avoid errors and ensure patient safety.
What is 0.5 liters in milliliters?
- A. 500 ml
- B. 50 ml
- C. 5 ml
- D. 0.5 ml
Correct Answer: A
Rationale: To convert liters to milliliters, you need to multiply by 1000 because 1 liter is equal to 1000 milliliters. Therefore, when you convert 0.5 liters to milliliters, you get 500 milliliters (0.5 * 1000 = 500). This conversion is commonly used in various situations where different units of volume are required. Choices B, C, and D are incorrect because they do not follow the correct conversion factor between liters and milliliters.
How many centimeters are in 4 meters?
- A. 40 cm
- B. 400 cm
- C. 4 cm
- D. 0.4 cm
Correct Answer: B
Rationale: To convert meters to centimeters, you multiply by 100. In this case, 4 meters x 100 = 400 centimeters. Therefore, the correct answer is 400 cm. Choices A, C, and D are incorrect because they do not correctly convert meters to centimeters.
What does 'cm' stand for in the metric system?
- A. centimeter
- B. cubic meter
- C. cord
- D. centi
Correct Answer: A
Rationale: In the metric system, 'cm' stands for centimeter, which is a unit of length equal to 1/100th of a meter. The correct answer is 'centimeter' (A). Choice B, 'cubic meter,' is a unit of volume, not length. Choice C, 'cord,' is not a standard metric unit. Choice D, 'centi,' is a prefix meaning one-hundredth, but 'cm' specifically stands for centimeter, not just the prefix.
How many millimeters (mm) are in 3.45 meters?
- A. 345 mm
- B. 3,450 mm
- C. 345,000 mm
- D. 3.45 mm
Correct Answer: B
Rationale: To convert meters to millimeters, you need to multiply by 1,000 because there are 1,000 millimeters in a meter. Therefore, 3.45 meters 1,000 = 3,450 millimeters. Choices A, C, and D are incorrect because they do not reflect the correct conversion factor from meters to millimeters.