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easyQ. No. 12086-which-instrument-is-used-to-measure-blood-pressure

Which instrument is used to measure blood pressure?

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Common mistakes include confusing mass with weight, energy with power, pressure with force and scalar quantities with vectors. Option A (“Hemoglobin meter”) is incorrect because it represents a different unit, dimension, instrument, quantity or measurement relationship from the one asked. Option C (“Barometer”) is incorrect because it represents a different unit, dimension, instrument, quantity or measurement relationship from the one asked. Option D (“Anemometer”) is incorrect because it represents a different unit, dimension, instrument, quantity or measurement relationship from the one asked. This question focuses on a fundamental idea in physical geography: “Which instrument is used to measure blood pressure?” The correct answer is Sphygmomanometer. A sphygmomanometer is used to measure blood pressure. Here, Sphygmomanometer gives the required match.

AHemoglobin meter
BSphygmomanometer
CBarometer
DAnemometer
Correct Answer: SphygmomanometerYour Answer: B

Explanation

A sphygmomanometer is used to measure blood pressure. Option A (“Hemoglobin meter”) is incorrect because it represents a different unit, dimension, instrument, quantity or measurement relationship from the one asked. Option C (“Barometer”) is incorrect because it represents a different unit, dimension, instrument, quantity or measurement relationship from the one asked. Option D (“Anemometer”) is incorrect because it represents a different unit, dimension, instrument, quantity or measurement relationship from the one asked. Option A, “Hemoglobin meter”, is incorrect for this question because it does not match the precise location, process, landform, climatic feature or geographical relationship identified by the evidence. Option C, “Barometer”, is incorrect for this question because it does not match the precise location, process, landform, climatic feature or geographical relationship identified by the evidence. Option D, “Anemometer”, is incorrect for this question because it does not match the precise location, process, landform, climatic feature or geographical relationship identified by the evidence.

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Units and Measurements FAQs

Common questions and clear answers for this topic.

What are Units and Measurements and which system is internationally accepted?

Units and Measurements involve quantifying physical quantities. The SI (Systeme International) is the internationally accepted system with 7 base units: metre (m) for length, kilogram (kg) for mass, second (s) for time, ampere (A) for electric current, kelvin (K) for temperature, mole (mol) for amount of substance, and candela (cd) for luminous intensity. Units and Measurements is an important Physics topic for SSC CGL, Railway, and UPSC.

What are the units of important physical quantities?

Important Physical Quantities and SI Units: Force - Newton (N), Pressure - Pascal (Pa), Energy/Work - Joule (J), Power - Watt (W), Electric charge - Coulomb (C), Electric potential - Volt (V), Resistance - Ohm, Capacitance - Farad (F), Frequency - Hertz (Hz), Temperature - Kelvin (K) or Celsius (C). These units are frequently asked in SSC CGL, Railway NTPC, and Physics GK sections.

What are the common unit conversions needed for competitive exams?

Important Unit Conversions: Length: 1 km = 1000 m, 1 m = 100 cm, 1 inch = 2.54 cm, 1 foot = 12 inches. Mass: 1 kg = 1000 g, 1 quintal = 100 kg, 1 metric ton = 1000 kg. Area: 1 hectare = 10,000 sq m, 1 acre = 4047 sq m. Speed: 1 km/hr = 5/18 m/s. Pressure: 1 atm = 101325 Pa = 760 mmHg. Temperature: C = (F-32) x 5/9, K = C + 273.15.

What is the difference between scalar and vector quantities?

Scalar quantities have only magnitude (no direction): mass, length, time, speed, temperature, energy, volume, density. Vector quantities have both magnitude and direction: displacement, velocity, acceleration, force, momentum, electric field. Speed (scalar) vs Velocity (vector): Speed is distance/time, Velocity is displacement/time. These distinctions are important for Physics questions in SSC CGL, NDA, and Railway exams.

What are the important measuring instruments and what they measure?

Important Measuring Instruments: Thermometer (temperature), Barometer (atmospheric pressure), Hygrometer (humidity), Lactometer (purity of milk), Seismograph (earthquakes), Speedometer (speed of vehicle), Altimeter (altitude), Ammeter (electric current), Voltmeter (voltage), Galvanometer (small current), Manometer (gas pressure), Anemometer (wind speed), Hydrometer (specific gravity of liquids).

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