Science General · Environmental Studies

Temperature Concepts

1,111 Questions

Temperature concepts involve understanding thermal conditions across various scientific and daily life contexts. This includes ideal storage temperatures, celestial body heat, and climate ranges. These facts are commonly tested in general science and environmental awareness papers.

Celestial body temperaturesStorage and cooking temperaturesAtmospheric and climate temperatureLaboratory temperature ranges

Temperature Concepts Questions

Multiple choice geography the polar regions polar regions natural regions of the world diversified world

In the frigid zone the summer temperature varies from ________.

  1. $0^0C-10^0C$
  2. $3^0C-12^0C$
  3. $10^0C-15^0C$
  4. $20^0C-40^0C$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The frigid zone is located one each in the two hemispheres. The frigid zone in northern hemisphere lies between Arctic Circle and the Noth pole and in the southern hemisphere between Antarctic Circle and south pole. This is the coldest area on the surface of the earth and covered with snow throughout the year. In summer the temperature varies from 3degree to 12 degree.

Multiple choice biology human influences on the environment human intervention in ecosystems humans in the environment involvement of humans in the conservation of environment

An ideal shelter for housing a temperature-measurement instrument should be:

  1. White

  2. Black

  3. In the shade

  4. Both white and in the shade
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

To measure air temperature accurately, instruments must be protected from direct sunlight and heat radiation. A white surface reflects solar radiation, and placement in the shade prevents direct heating.

Multiple choice biology physical resources air as a natural resource types of chemical reactions chemical reactions

Respiration requires ___ temperatures whereas burning requires __ temperature.

  1. Room temperature, high temperature

  2. Low temperature, high temperature
  3. $37^oC$, high temperature
  4. $37^oC$, low temperature
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Respiration is a slow process occurring inside the living systems only. Hence, it requires body temperature i.e., $37^0C$ to occur. Whereas burning occurs outside the living system. It requires a high temperature to initiate a chemical change.


Hence, option $C$ is correct.

Multiple choice physics temperature and heat application of various thermometric scales different types of thermometers measuring temperature

Two thermometers are constructed in the same way except that one has a spherical bulb and the other a cylindrical bulb; which one will respond quickly to temperature changes?

  1. Spherical bulb thermometer

  2. Cylindrical bulb thermometer

  3. both equally

  4. either
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A spherical bulb has a smaller surface-area-to-volume ratio than a cylindrical bulb of similar volume, but a cylindrical bulb is often designed to have a larger surface area for faster heat exchange. However, the spherical shape is generally more robust, while the cylindrical shape responds faster due to higher surface area exposure.

Multiple choice physics temperature and heat application of various thermometric scales different types of thermometers measuring temperature

At the top of a mountain, a thermometer read ${7}^{0}C$ and barometer reads $70\, cm$ of Hg. At the bottom of the mountain, the barometer reads $76\,cm$ of Hg and thermometer reads ${27}^{0}C$. The density the density at the bottom.

  1. $0.99$
  2. $0.9$
  3. $0.89$
  4. $0.95$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Using the ideal gas law P = rho * R * T. The ratio of densities rho1/rho2 = (P1/T1) / (P2/T2). P1=70, T1=280K; P2=76, T2=300K. rho1/rho2 = (70/280) / (76/300) = 0.25 / 0.2533 = 0.986, which is approximately 0.99.

Multiple choice physics temperature and heat application of various thermometric scales different types of thermometers measuring temperature

A thermometer reads $0^{\circ}$ as $10^{\circ}$ and $100^{\circ}$ as $90^{\circ}C$. Then
Find the reading of the temperature if the temperature is $40^{\circ}C$?

  1. $42^{\circ}C$
  2. $40^{\circ}C$
  3. $35^{\circ}C$
  4. $45^{\circ}C$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The scale is linear: T_new = m * T_c + c. 0 = m(10) + c and 100 = m(90) + c. Solving gives m = 100/80 = 1.25 and c = -12.5. For T_c = 40, T_new = 1.25 * 40 - 12.5 = 50 - 12.5 = 37.5. Wait, checking the math: 0C -> 10, 100C -> 90. Slope = (90-10)/(100-0) = 0.8. T_new = 0.8 * T_c + 10. For T_c = 40, T_new = 0.8 * 40 + 10 = 32 + 10 = 42.

Multiple choice physics temperature and heat application of various thermometric scales different types of thermometers measuring temperature

If two temperatures differ by 25 degrees on Celsius scale, the difference of temperature on Fahrenheit scale is 

  1. $65^{\circ}$
  2. $45^{\circ}$
  3. $38^{\circ}$
  4. $25^{\circ}$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Each Celsius degree equals 5/9ths of a Fahrenheit degree. 

Each Fahrenheit degree equals 9/5ths of a Celsius degree. 

A 25 degree difference in Celsius would be 25 x 9/5 = 45 degrees Fahrenheit.

Multiple choice physics temperature and heat application of various thermometric scales different types of thermometers measuring temperature

A Centigrade and Fahrenheit thermometers are dipped in boiling water. The water temperature is lowered unit the Fahrenheit thermometre registers a temperature of $140^o$. The fall of temperature as registered by the Centigrade thermometre is :

  1. $80^o$C
  2. $40^o$C
  3. $50^o$C
  4. $90^o$C
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Boiling point is 100C or 212F. The temperature dropped from 212F to 140F, a change of 72F. The conversion factor is 5/9. Change in C = (5/9) * 72 = 5 * 8 = 40C.

Multiple choice physics heat - measurement application of various thermometric scales different types of thermometers measuring temperature introduction to temperature

A barometer with a brass scale correct at $0^oC$ reads $70\ cm$ of mercury on a day when the air temperature is $40^oC$. the correct reading at $0^oC$ is (Coefficient of real expansion of mercury, is $0.00018/^oC$ and the coefficient of linear expansion of brass is $0.000018/^oC$.

  1. $60.5\ cm$
  2. $69.5\ cm$
  3. $20.5\ cm$
  4. $50.00\ cm$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

If the correct heading of barometer at $0^oC$ is $70\ cm$ then the at $40^oC,$ the reading will show,

$L=70(1+\alpha _1\Delta T)$    $[\alpha$ ,of Brass , $\Delta T=40\ k]$
similarly , mercury expands to $70\ cm$ from initial length $Lo$
$\Rightarrow L=Lo(1+\alpha _2\Delta T)$   ($\alpha _2:$ mercury)
It gives :-
$Lo=\dfrac{70(1+\alpha _2\Delta T)}{(L+\alpha _2\Delta T)}=\dfrac{70(1+1.8\times Lo^{-5}\times 40)}{(1+1.8\times 10^{-4}\times40)}$
$Lo=69.55\ cm$

Multiple choice physics heat - measurement application of various thermometric scales different types of thermometers measuring temperature introduction to temperature

Mercury thermometers can be used to measure temperatures upto:

  1. $100^{o}C$
  2. $212^{o}C$
  3. $360^{o}C$
  4. $500^{o}C$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Mercury thermometer is based on the principle of change of volume with rise of temperature and can measure temperatures ranging from $-{30}^{\circ}$C to ${357}^{\circ}$C.

Multiple choice physics heat - measurement application of various thermometric scales different types of thermometers measuring temperature introduction to temperature

We cannot use mercury thermometer at low temperatures because:

  1. Glass might break down at low temperature.

  2. Heat does not flow from the body whose measurement we are taking with the thermometer.

  3. At low temperatures mercury becomes transparent and it becomes difficult to take the readings.

  4. Mercury freezes at low temperatures.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Mercury, which is used as a thermometric liquid, has the following characteristic properties:

1. Mercury has a high boiling point of about $357^{\circ}$C and therefore can be used to measure temperatures as high as $357^{\circ}$C.

2. Mercury has a freezing point of about $-39^{\circ}$C and hence it is suitable in thermometers to record low temperatures (although not very low temperatures).

3. Mercury is opaque and has a shining silvery colour of its own, making it clearly visible in the capillary tube of a thermometer. 


4. Mercury needs very little heat to expand and so it can easily measure the temperature of a body without causing a decrease in the body's temperature.

5. Mercury does not stick to the side of the glass capillary tube of a thermometer. Therefore, it allows accurate temperature measurement.

6. Mercury is a good conductor of heat.

7. Mercury is relatively expensive.