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Olympiad Test: Temperature & its Measurement - 2 - Class 6 MCQ


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10 Questions MCQ Test - Olympiad Test: Temperature & its Measurement - 2

Olympiad Test: Temperature & its Measurement - 2 for Class 6 2025 is part of Class 6 preparation. The Olympiad Test: Temperature & its Measurement - 2 questions and answers have been prepared according to the Class 6 exam syllabus.The Olympiad Test: Temperature & its Measurement - 2 MCQs are made for Class 6 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Olympiad Test: Temperature & its Measurement - 2 below.
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Olympiad Test: Temperature & its Measurement - 2 - Question 1

What was used in ancient India to detect fever before thermometers were invented?

Detailed Solution for Olympiad Test: Temperature & its Measurement - 2 - Question 1

In ancient India, the most common method to detect fever was by checking pulse rate. This practice involved feeling the pulse to assess the body's condition, which provided insights into the presence of fever and other ailments.

Explanation of Incorrect Options

  • Checking breathing rate: Although breathing patterns can indicate health issues, they were not primarily used as a method to detect fever in ancient times.
  • Checking sweating: Sweating may occur with fever, but it was not a reliable standalone method for diagnosis.
  • Checking skin colour: While changes in skin colour can be associated with various conditions, this method was not specifically used to diagnose fever in ancient India.
Olympiad Test: Temperature & its Measurement - 2 - Question 2

Which thermometer is used in science experiments to measure the temperature of liquids and gases?

Detailed Solution for Olympiad Test: Temperature & its Measurement - 2 - Question 2

Explanation of Correct Answer

The laboratory thermometer is specifically designed for measuring the temperature of liquids and gases in scientific experiments. It typically has a wider range and is more accurate than other types of thermometers used in clinical settings.

Explanation of Incorrect Options

  • Clinical thermometer: This type is primarily used for measuring body temperature and is not suitable for scientific experiments involving liquids and gases.
  • Infrared thermometer: While useful for measuring surface temperatures without contact, it is not designed for accurate temperature readings in liquids or gases.
  • Digital thermometer: Although versatile, digital thermometers may not be specifically calibrated for laboratory conditions as accurately as laboratory thermometers.
Olympiad Test: Temperature & its Measurement - 2 - Question 3

What liquids are commonly used inside laboratory thermometers?

Detailed Solution for Olympiad Test: Temperature & its Measurement - 2 - Question 3

Laboratory thermometers typically use mercury or alcohol as the liquid for measuring temperature due to their consistent expansion properties over a wide range of temperatures.

Explanation of Correct Answer

The correct answer is B. Mercury and alcohol. Mercury is often used because it expands uniformly and has a high boiling point, making it effective for measuring high temperatures. Alcohol, particularly coloured alcohol, is used for lower temperature measurements as it remains liquid at lower temperatures than mercury.

Explanation of Incorrect Options

  • A. Water and oil: While water is a common liquid, it is not used in thermometers because it does not expand uniformly and can freeze at low temperatures. Oil is also not suitable due to its viscosity.
  • C. Kerosene and petrol: These liquids are not used in thermometers as they have high volatility and do not provide accurate temperature readings.
  • D. Saltwater and glycerine: Saltwater is not used due to the potential for freezing and corrosion, and glycerine is not used because it does not have the necessary thermal expansion properties for accurate temperature measurement.
Olympiad Test: Temperature & its Measurement - 2 - Question 4
Which colour is alcohol usually dyed in thermometers for visibility?
Detailed Solution for Olympiad Test: Temperature & its Measurement - 2 - Question 4

The correct answer is Red. Alcohol used in thermometers is typically dyed red for better visibility against the scale of the thermometer.

Explanation of Incorrect Options

  • Green: While green dye exists, it is not commonly used in alcohol thermometers.
  • Yellow: Yellow is not a standard dye for alcohol in thermometers, as it may not provide sufficient contrast for accurate readings.
  • Blue: Blue is also not a usual dye for alcohol in thermometers and can be difficult to see against certain scales.
Olympiad Test: Temperature & its Measurement - 2 - Question 5

What is the temperature range of a laboratory thermometer?

Detailed Solution for Olympiad Test: Temperature & its Measurement - 2 - Question 5

A laboratory thermometer is used to measure temperatures in scientific experiments. Its typical temperature range is –10°C to 110°C, allowing it to measure both below and above normal room temperature. This makes it suitable for various laboratory applications where precision is needed.

Olympiad Test: Temperature & its Measurement - 2 - Question 6
Which precaution is correct when using a laboratory thermometer?
Detailed Solution for Olympiad Test: Temperature & its Measurement - 2 - Question 6

The correct precaution when using a laboratory thermometer is to keep it upright while reading. This ensures that the reading is accurate and not influenced by the angle of the thermometer.

Explanation of Incorrect Options

  • Shake it before use: Shaking a thermometer is not a recommended practice, especially for liquid-in-glass thermometers, as it may damage the thermometer or cause inaccurate readings.
  • Hold it by the bulb: Holding a thermometer by the bulb can lead to inaccurate readings due to heat from your hand affecting the mercury or the liquid inside.
  • Place it in direct sunlight: This can cause the thermometer to give a false reading, as direct sunlight may heat the thermometer and not reflect the actual temperature of the substance being measured.
Olympiad Test: Temperature & its Measurement - 2 - Question 7
At what temperature does water boil and freeze on the Celsius scale?
Detailed Solution for Olympiad Test: Temperature & its Measurement - 2 - Question 7

Water boils at 100 °C and freezes at 0 °C on the Celsius scale. Therefore, the correct answer is option C.

Explanation of Incorrect Options

  • Option A: Incorrect because it states that water boils at 0 °C and freezes at 100 °C, which is the reverse of the actual temperatures.
  • Option B: Incorrect as it claims water boils at 50 °C, which is not accurate.
  • Option D: Incorrect because it provides temperatures in Kelvin; while the conversions are incorrect, the boiling point of water in Kelvin is actually 373 K, and freezing is 273 K.
Olympiad Test: Temperature & its Measurement - 2 - Question 8
What is the normal human body temperature in Fahrenheit?
Detailed Solution for Olympiad Test: Temperature & its Measurement - 2 - Question 8

The normal human body temperature is typically around 98.6 °F.

Explanation of Correct Answer

Option B is the correct answer because it represents the average normal body temperature, which is widely accepted in the medical community.

Explanation of Incorrect Options

  • Option A (37.0 °F) is incorrect. While 37.0 °C is normal body temperature in Celsius, it converts to approximately 98.6 °F, which is not listed correctly in this case.
  • Option C (100 °F) is incorrect as this temperature is considered a low-grade fever, not the normal human body temperature.
  • Option D (120 °F) is incorrect; this temperature is dangerously high and indicative of severe hyperthermia or heat stroke.
Olympiad Test: Temperature & its Measurement - 2 - Question 9
Who is known as the “Weather Woman of India”?
Detailed Solution for Olympiad Test: Temperature & its Measurement - 2 - Question 9

Explanation of Correct Answer

The correct answer is Anna Mani. She was a pioneering meteorologist and made significant contributions to the field of meteorology in India, earning her the title of the "Weather Woman of India."

Explanation of Incorrect Options

  • Kalpana Chawla: Although she was an accomplished astronaut and engineer, she is not associated with meteorology.
  • Sunita Williams: She is a renowned astronaut and has made significant achievements in space exploration, but she is not known for contributions to meteorology.
  • Indira Gandhi: The former Prime Minister of India, she had no direct connection to meteorology or weather forecasting.
Olympiad Test: Temperature & its Measurement - 2 - Question 10
Which instrument is most commonly used to measure air temperature at weather stations?
Detailed Solution for Olympiad Test: Temperature & its Measurement - 2 - Question 10

Explanation of Correct Answer

The correct answer is Thermometer. A thermometer is specifically designed to measure air temperature, making it the most common instrument used at weather stations.

Explanation of Incorrect Options

  • Barometer: Measures atmospheric pressure, not temperature.
  • Hygrometer: Measures humidity levels in the air, not temperature.
  • Anemometer: Measures wind speed, not air temperature.
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