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 physics temperature and heat modes of heat transfer - conduction conduction heat and modes of heat transfer

In a steady state the temperature of the ends A and B of a 20 cm long rod AB is 100$^o$C and 0$^o$C. The temperature at the point c distant 9 cm from a is :

  1. $45^o$C
  2. $55^o$C
  3. $60^o$C
  4. $65^o$C
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Temperature increasing per unit length $=\cfrac{100-0}{20}=5^oC/cm$
Temperature at $9cm$ from $a \\ =100^oC-(5^oC/cm\times 9cm) \\ =55^oC$
Multiple choice physics temperature and heat modes of heat transfer - conduction conduction heat and modes of heat transfer

Two thermometers are used to record the temperature of a room. If the bulb of one is wrapped in wet hanky:

  1. The temperature recorded by both will be same.

  2. The temperature recorded by the wet-bulb thermometer will be greater than that recorded by the other.

  3. The temperature recorded by dry-bulb thermometer will be greater than that recorded by the other

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The thermometer whose bulb is wrapped by wet hanky; undergoes evaporation process; and we know that evaporation results in cooling, so the wet bulb, thermometer will record less temperature than that of dry bulb thermometer.

Multiple choice biology global environmental change causes of greenhouse effect greenhouse effect pollution and its effects

If there is no greenhouse effect, then the average temperature at surface of earth would have been 

  1. $ 15 $
  2. $ -18 $
  3. $ -6 $
  4. $ 10 $
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Greenhouse gases like $ { CO } _{ 2 }, { CH }{ 4 } $ and $ { CFC } _{ s } $ are essential for keeping the earth warm and hospitable. They prevent a substantial part of long wave radiations emitted by earth to escape into space, but these gases radiate a part of this energy back to the earth. This phenomenon is called greenhouse effect. Because of green house effect, the mean annual temperature of earth is $ 15. $ In its absence, it will fall to $ -18. $
So, the correct answer is '$ -18. $'
Multiple choice biology global environmental change causes of greenhouse effect greenhouse effect pollution and its effects

In the absence of greenhouse gases, the temperature of earth's surface will fall to

  1. $0^o$C
  2. $-5^o$C
  3. $-10^o$C
  4. $-20^o$C
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Without the Greenhouse gases, the average temperature of earth would be 0$^{o}$ F or -20$^{o}$ C. The naturally present Greenhouse gases allow most of the incoming solar radiations to warm the earth surface and do not let the thermal radiations to escape into the space. However, anthropogenic contribution to the Greenhouse gases increase the level of solar radiations trapped and thus increase the overall temperature leading to global warming.

Hence, the correct answer is '-20$^{o}$ C'.

Multiple choice physics measurement and effects of heat heat exchange calorimeter measuring thermal quantities by the method of mixtures

At which temperature do the readings of the celcius and the Fahrenheit scales coincide ?

  1. $0$
  2. $100$
  3. $-40$
  4. $-80$

  5. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

We know the relation between celsius and Fahrenheit is given by , 

$ ^0 C = \dfrac{9}{5}  \times ^0F + 32 $
For readings to coincide ,  $ ^0 C = ^0 F$
$ ^0 C = \dfrac{9}{5}  \times ^0C + 32 $
On Solving, $ ^0 C = -40 $


Multiple choice physics measurements and experimentation vernier calliper and screw gauge least count of vernier calliper and screw gauge measurement of length

A steel tape is calibrated at $20 ^ { \circ } \mathrm { C }$. On a cold day when the temperature is $- 15 ^ { \circ } \mathrm { C }$ percentage error in the tape will be $\left[ \alpha _ { \text { steel } } = 1.2 \times 10 ^ { - 5 \cdot 0 } C ^ { - 1 } \right]$

  1. $0.035 \%$
  2. $0.042 \%$
  3. $0.012 \%$
  4. $0.018 \%$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The change in length due to temperature is delta L = L * alpha * delta T. The percentage error is (delta L / L) * 100 = alpha * delta T * 100. Here, alpha = 1.2 * 10^-5 and delta T = 20 - (-15) = 35. So, 1.2 * 10^-5 * 35 * 100 = 0.042%.

Multiple choice physics measurements and experimentation vernier calliper and screw gauge least count of vernier calliper and screw gauge measurement of length

A  faulty thermometer has its fixed point marked 5${ \circ  } _{ C }$ and 95${ \circ  } _{ C }$. this thermometer reads the temperature of a body as ${ 59 }^{ \circ  }$. The correct temperature on Celsius scale is  

  1. 59 ${ \circ } _{ C }$
  2. 8.6 ${ \circ } _{ C }$
  3. 65.56 ${ \circ } _{ C }$
  4. 58 ${ \circ } _{ C }$
Reveal answer Fill a bubble to check yourself
C Correct answer
Multiple choice physics measurements and experimentation vernier calliper and screw gauge least count of vernier calliper and screw gauge measurement of length

A faulty thermometer has its fixed point marked $5C$ and $95 C$. This thermometer reads the temperature of a body as $59^o$. The correct temperature on Celsius scale is 

  1. $64^{0}$
  2. $54^{0}$
  3. $60^{0}$
  4. $68^{0}$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
For two scales of thermometer,

$\dfrac{C-0}{100-0}=\dfrac{Reading}{UPF-LPF}-LPF$

where, $LPF$ and $UPF$ are the lower and upper fixed points on the scale.

Therefore

$\dfrac{C}{100}=\dfrac{59-5}{95-5}=\dfrac{54}{90}=0.6$

$\implies C=0.6\times 100=60^0$
Multiple choice

the basic conditions for the growth of rice crop is

  1. temp-25C, rainfall- 100cm-200cm

  2. temp- 20-25C, rainfall- 50cm-75cm

  3. temp- 21C-27C, rainfall- 50cm-75cm

  4. temp-20C-25C, rainfall-50cm-75cm
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Rice is a kharif crop that requires high temperatures (above 25 degrees Celsius) and high humidity with annual rainfall above 100 cm. Option A correctly identifies these climatic requirements.

Multiple choice

Normal body temperature for a dairy cow is ________ .

  1. 99.5 degrees F

  2. 107.5 degrees F

  3. 101.5 degrees F

  4. 98.5 degrees F
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The normal body temperature for a healthy adult dairy cow ranges from 101.0 to 102.5 degrees Fahrenheit, with 101.5 degrees being the standard average.