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Question (11)

QN0031298

A scientist records air temperature as 305 K. The corresponding Celsius temperature is approximately

(A) 31.85 °C
(B) 32.0 °C
(C) 578.15 °C
(D) 305 °C

Correct Answer: A

Explanation:

Temperature in Celsius = 305 – 273.15 = 31.85 °C.

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Question (12)

QN0031299

Which of the following actions should be avoided while using a laboratory thermometer?

(A) Holding it vertically
(B) Reading at eye level
(C) Holding it by the bulb
(D) Keeping the bulb immersed in liquid

Correct Answer: C

Explanation:

Holding the thermometer by the bulb can affect readings and may damage it.

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Question (13)

QN0031300

Two healthy adults have body temperatures of 36.7 °C and 37.2 °C. Which statement is correct?

(A) Both are unhealthy
(B) Only the first person is healthy
(C) Only the second person is healthy
(D) Both may be healthy

Correct Answer: D

Explanation:

Normal body temperature varies slightly among healthy individuals.

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Question (14)

QN0031301

A weather station records maximum and minimum temperatures as 40 °C and 28 °C. The difference between them is

(A) 12 °C
(B) 22 °C
(C) 68 °C
(D) 14 °C

Correct Answer: A

Explanation:

Difference = 40 °C – 28 °C = 12 °C.

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Question (15)

QN0031302

Which property makes digital thermometers safer than mercury thermometers?

(A) They are longer in size
(B) They do not contain toxic mercury
(C) They always show readings in Kelvin
(D) They do not require batteries

Correct Answer: B

Explanation:

Mercury is toxic, whereas digital thermometers do not contain mercury.

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Question (16)

QN0031303

A laboratory thermometer has a least count of 2 °C. Which of the following temperatures cannot be measured accurately with it?

(A) 24 °C
(B) 36 °C
(C) 41 °C
(D) 50 °C

Correct Answer: C

Explanation:

A thermometer with a least count of 2 °C can accurately measure only multiples of 2 °C.

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Question (17)

QN0031304

A student wants to measure the temperature of crushed ice. Which thermometer is appropriate?

(A) Clinical thermometer only
(B) Laboratory thermometer only
(C) Room thermometer only
(D) Any digital clock

Correct Answer: B

Explanation:

The temperature of crushed ice is outside the range of a clinical thermometer, so a laboratory thermometer is used.

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Question (18)

QN0031305

If the room temperature increases from 25 °C to 35 °C, the rise in temperature is

(A) 5 °C
(B) 10 °C
(C) 15 °C
(D) 60 °C

Correct Answer: B

Explanation:

Rise in temperature = 35 °C – 25 °C = 10 °C.

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Question (19)

QN0031306

A thermometer scale extends from 0 °C to 100 °C and has 200 equal divisions. The temperature represented by each division is

(A) 2 °C
(B) 1 °C
(C) 0.5 °C
(D) 0.25 °C

Correct Answer: C

Explanation:

Least count = 100 ÷ 200 = 0.5 °C.

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Question (20)

QN0031307

Which of the following best explains why weather forecasts include maximum and minimum air temperatures?

(A) Air temperature never changes during a day
(B) Temperature data help in weather prediction
(C) Air temperature is useful only in summer
(D) Maximum and minimum temperatures are always equal

Correct Answer: B

Explanation:

Air temperature is an important weather parameter used in weather forecasting.

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Question (11)

A scientist records air temperature as 305 K. The corresponding Celsius temperature is approximately

Explanation:

Link:

Question (12)

Which of the following actions should be avoided while using a laboratory thermometer?

Explanation:

Link:

Question (13)

Two healthy adults have body temperatures of 36.7 °C and 37.2 °C. Which statement is correct?

Explanation:

Link:

Question (14)

A weather station records maximum and minimum temperatures as 40 °C and 28 °C. The difference between them is

Explanation:

Link:

Question (15)

Which property makes digital thermometers safer than mercury thermometers?

Explanation:

Link:

Question (16)

A laboratory thermometer has a least count of 2 °C. Which of the following temperatures cannot be measured accurately with it?

Explanation:

Link:

Question (17)

A student wants to measure the temperature of crushed ice. Which thermometer is appropriate?

Explanation:

Link:

Question (18)

If the room temperature increases from 25 °C to 35 °C, the rise in temperature is

Explanation:

Link:

Question (19)

A thermometer scale extends from 0 °C to 100 °C and has 200 equal divisions. The temperature represented by each division is

Explanation:

Link:

Question (20)

Which of the following best explains why weather forecasts include maximum and minimum air temperatures?

Explanation:

Link:

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