Science General · Environmental Studies

Temperature Concepts

1,035 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 chemistry matter around us measurement of properties effect of temperature and pressure on states of matter general introduction: importance and scope of chemistry

$298 K$ is what temperature in Fahrenheit?

  1. $76.73F$
  2. $80F$
  3. $75F$
  4. $27F$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

${ T } _{ K }={ (T } _{ F }+459.67)\times \frac { 5 }{ 9 } \ \Rightarrow 298={ (T } _{ F }+459.67)\times \frac { 5 }{ 9 } \ \Rightarrow \frac { 298\times 9 }{ 5 } -459.67={ T } _{ F }\ \Rightarrow { T } _{ F }=536.4-459.67={ 76.73 }^{ 0 }F$

Multiple choice chemistry matter around us measurement of properties effect of temperature and pressure on states of matter general introduction: importance and scope of chemistry

The centigrade $(^0 C)$ scale can be converted into Kelvin scale by the formula:

  1. Temperature in Kelvin + 273

  2. Temperature in Kelvin - 273

  3. Temperature in Fahrenheit + 273

  4. Temperature in Fahrenheit - 273
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The temperature T in Kelvin (K) is equal to the temperature T in degrees Celsius $\displaystyle \left( ^{ \circ  }{ C } \right) + 273$: 


$\displaystyle { T } _{ \left( k \right)  }={ T } _{ \left( ^{ \circ  }{ C } \right)  }+273.15$

Therefore, temperature in $\displaystyle ^{ \circ  }{ C }$ =  temperature in Kelvin +273.

Hence, option B is correct.

Multiple choice chemistry matter around us measurement of properties effect of temperature and pressure on states of matter general introduction: importance and scope of chemistry

Convert $-679^{\circ}$ F to celsius.

  1. 412.24
  2. $-$395

  3. 963
  4. $-$400
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

We know,    $\boxed { {  }^{ 0 }C=\left( {  }^{ 0 }F-32 \right) \times \frac { 5 }{ 9 }  } $

                   $\swarrow $               $\searrow $
temp in ${  }^{ 0 }C$                       temp in $F$.
${  }^{ 0 }C=\left( -679-32 \right) \times \dfrac { 5 }{ 9 } $
${  }^{ 0 }C=-395$
$\therefore $  temperature in ${  }^{ 0 }C$  u $-{ 395 }^{ 0 }C$.

Multiple choice chemistry matter around us measurement of properties effect of temperature and pressure on states of matter general introduction: importance and scope of chemistry

Temperature of hot red iron is $58^{\circ}$ F. If the temperature increases by $20^{\circ}$ F, what is its temperature now in kelvin?

  1. 298.5

  2. 300

  3. 273
  4. $-$80
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Temperature after heating $= 58 + 20 = 78^0F$
Temperature in Kelvin $= (F -  32) \div 1.8 + 273$
                                    $= (78-32) \div 1.8 +273$
                                    $= 46 \div 1.8 + 273$
                                    $= 25.55 + 273$
                                    $= 298.5$ K

Multiple choice chemistry matter around us measurement of properties effect of temperature and pressure on states of matter general introduction: importance and scope of chemistry

Centigrade or Celsius scale can be converted into Kelvin scale by which of the following formula?

  1. $^oC =$ Temperature in Kelvin $+ 273.15$
  2. $^oC =$ Temperature in Kelvin $ - 273.15$
  3. $^oC =$ Temperature in Fahrenheit $+ 273$
  4. $^oC =$ Temperature in Fahrenheit $ - 273$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Zero on the Celsius scale $(0^0C)$ is now defined as the equivalent to $273.15K$, with a temperature difference of $1\ ^o C$ equivalent to a difference of $1\ K$, meaning the unit size in each scale is the same.


$T _c=T _k-273.15$

$T _k=$Temperature in kelvin.
$T _c=$Temperature in celsius.

So, the correct option is $B$

Multiple choice chemistry matter around us measurement of properties effect of temperature and pressure on states of matter general introduction: importance and scope of chemistry

Mathematical relation for conversion of Temperature from Celsius scale to Fahrenheit scale is:

  1. $F = \frac{ 5 }{ 9} C + 32$
  2. $C = \frac{ 9 }{ 5 }F + 32$
  3. $F =\frac{ 9 }{ 5 }C + 32$
  4. $F =\frac{ 9 }{ 5 }C - 32$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
$T _C =(T _F - 32) \frac { 5 }{ 9 }$
${ T } _{ F }=(\frac { 9 }{ 5 } \times { T } _{ C })+32$
$T _C=$Temperature in celsius scale.
$T _F=$Temperature in Fahrenheit scale.
Option C is correct.
Multiple choice chemistry matter around us measurement of properties effect of temperature and pressure on states of matter general introduction: importance and scope of chemistry

What temperature scale must always be used when working gas law problems?

  1. Celsius Scale

  2. Kelvin Scale

  3. Rankine Scale

  4. Fahrenheit scale
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
You should always use the Kelvin scale to measure temperatures of gases for use with the gas laws. 
Imagine you have a gas at 1$^0C$ and it is heated to $2^0C$. Just using Celsius temperatures you have doubled the temperature when in reality the amount of additional kinetic energy of a gas at $2^0C$ is only slightly higher than a gas at $1^0C.$
Also, imagine working a problem where you would need to divide by a temperature of $0^0C$. Wouldn't work! You have the same issue at $0K$, but since the material would not be a gas at $0K$ it is not an issue.
So we use kelvin scale always in gas problems.Option B is correct.
Multiple choice

What is the DP if the wet-bulb temp is 8 and the dry bulb temp is 20?

  1. 15oC

  2. -10oC

  3. 20oC

  4. 22oC
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The difference between the dry-bulb temperature (20 degrees C) and the wet-bulb temperature (8 degrees C) is 12 degrees C. Looking at the Dewpoint Temperature chart in the Earth Science Reference Tables, a dry-bulb temperature of 20 degrees C and a difference of 12 degrees C corresponds to a dewpoint of -10 degrees C.

Multiple choice

What is the DP when the dry-bulb temp is -6oC and the difference is 1?

  1. 73oC

  2. -10oC

  3. -7oC

  4. -12oC
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Using the Dewpoint Temperature chart in the Earth Science Reference Tables, locate the dry-bulb temperature of -6 degrees C on the left axis. Follow this row to the column representing a difference of 1 degree C, which gives a dewpoint temperature of -10 degrees C.