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Question (1)

QN0031288

A digital clinical thermometer shows a reading of 99.5 °F. Which statement is most likely correct?

(A) The person definitely has no fever
(B) The thermometer is faulty
(C) The temperature is slightly above normal body temperature
(D) The temperature is below normal body temperature

Correct Answer: C

Explanation:

Normal body temperature is 98.6 °F. A reading of 99.5 °F is slightly higher than normal.

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Question (2)

QN0031289

A student keeps his right hand in warm water and left hand in ice-cold water for two minutes. He then places both hands in tap water. The tap water will feel

(A) warm to both hands
(B) cold to both hands
(C) cold to the right hand and warm to the left hand
(D) the same to both hands

Correct Answer: C

Explanation:

Sense of touch is not reliable because previous exposure affects sensation.

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Question (3)

QN0031290

A thermometer scale has marks at 0 °C and 20 °C with 40 equal small divisions between them. The least count of the thermometer is

(A) 0.2 °C
(B) 0.5 °C
(C) 1 °C
(D) 2 °C

Correct Answer: B

Explanation:

Least count = 20 ÷ 40 = 0.5 °C.

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Question (4)

QN0031291

A laboratory thermometer can measure temperatures from –10 °C to 110 °C. What is its temperature range?

(A) 100 °C
(B) 110 °C
(C) 120 °C
(D) 130 °C

Correct Answer: C

Explanation:

Range = 110 °C – (–10 °C) = 120 °C.

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Question (5)

QN0031292

A healthy child's armpit temperature is measured as 36.2 °C. The actual body temperature is likely to be around

(A) 35.2 °C
(B) 36.2 °C
(C) 36.7 °C to 37.2 °C
(D) 38.5 °C to 39.0 °C

Correct Answer: C

Explanation:

Armpit temperature is about 0.5 °C to 1.0 °C lower than actual body temperature.

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Question (6)

QN0031293

A temperature of 27 °C on the Celsius scale is equal to

(A) 246.15 K
(B) 273.15 K
(C) 300.15 K
(D) 310.15 K

Correct Answer: C

Explanation:

Temperature in Kelvin = 27 + 273.15 = 300.15 K.

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Question (7)

QN0031294

Which thermometer is most suitable for measuring the temperature of boiling water in a science laboratory?

(A) Digital clinical thermometer
(B) Infrared clinical thermometer
(C) Laboratory thermometer
(D) Room thermometer

Correct Answer: C

Explanation:

Boiling water temperature is beyond the range of a clinical thermometer, so a laboratory thermometer is used.

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Question (8)

QN0031295

While measuring water temperature, a student removes the laboratory thermometer from water and then notes the reading. The reading obtained will most likely be

(A) higher than actual temperature
(B) lower than actual temperature
(C) exactly equal to actual temperature
(D) impossible to read

Correct Answer: B

Explanation:

The liquid column starts falling as soon as the thermometer is removed from water.

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Question (9)

QN0031296

A thermometer has markings from 20 °C to 30 °C with 20 equal divisions. The reading corresponding to the 7th division after 20 °C is

(A) 23.5 °C
(B) 24.0 °C
(C) 25.5 °C
(D) 27.0 °C

Correct Answer: A

Explanation:

Each division = 10 ÷ 20 = 0.5 °C. Therefore, reading = 20 + (7 × 0.5) = 23.5 °C.

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Question (10)

QN0031297

During an experiment, four students observe boiling water for ten minutes. They notice that the temperature remains nearly constant. This shows that

(A) the thermometer has stopped working
(B) boiling water maintains a constant temperature while boiling
(C) water cannot be heated further
(D) the laboratory is cold

Correct Answer: B

Explanation:

During boiling, water remains at nearly constant temperature.

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Question (1)

A digital clinical thermometer shows a reading of 99.5 °F. Which statement is most likely correct?

Explanation:

Link:

Question (2)

A student keeps his right hand in warm water and left hand in ice-cold water for two minutes. He then places both hands in tap water. The tap water will feel

Explanation:

Link:

Question (3)

A thermometer scale has marks at 0 °C and 20 °C with 40 equal small divisions between them. The least count of the thermometer is

Explanation:

Link:

Question (4)

A laboratory thermometer can measure temperatures from –10 °C to 110 °C. What is its temperature range?

Explanation:

Link:

Question (5)

A healthy child's armpit temperature is measured as 36.2 °C. The actual body temperature is likely to be around

Explanation:

Link:

Question (6)

A temperature of 27 °C on the Celsius scale is equal to

Explanation:

Link:

Question (7)

Which thermometer is most suitable for measuring the temperature of boiling water in a science laboratory?

Explanation:

Link:

Question (8)

While measuring water temperature, a student removes the laboratory thermometer from water and then notes the reading. The reading obtained will most likely be

Explanation:

Link:

Question (9)

A thermometer has markings from 20 °C to 30 °C with 20 equal divisions. The reading corresponding to the 7th division after 20 °C is

Explanation:

Link:

Question (10)

During an experiment, four students observe boiling water for ten minutes. They notice that the temperature remains nearly constant. This shows that

Explanation:

Link:

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