Science MCQ (1 Marks)

$ (36.4 + 37.4 + 36.6)$ degree Celsius $= 110.4$ For getting average body tem we should divide: “Total temperature” by “Number of times” Therefore, $110.4/3 = 36.8$ degree Celsius.

 We know,
$K = C + 273$
$K = 10^\circ C + 273$
$= 283K$

$ -10^\circ C$ to $110^\circ C$ is the range of laboratory thermometer.

 Following are the thermal conductivities of the following metals and alloys: ( in wK/m )
Silver$−430$ Copper$−400$ Aluminium$−235$ Brass$−109$
Order of thermal (heat) conductivity:
Silver>Copper>Aluminium>Brass
So, Silver has highest thermal conductivity

 Six's maximum and minimum thermometer is a registering thermometer that can record the maximum and minimum temperatures reached over a period of time, for example $24$ hours. It is used to record the extremes of temperature at a location, for instance in meteorology and horticulture.

 The temperature $37^\circ C$ is described in Celsius scale while the temperature $98.6^\circ F$ is described in Fahrenheit scale but they are actually equal. Both these values represent the normal average temperature of a human body.

 A laboratory thermometer, which is colloquially known as the lab thermometer, is used for measuring temperatures other than the human body temperature.
It ranges from $-10^\circ C$ to $110^\circ C.$ Laboratory thermometers are designed for lab purposes such as checking boiling point, freezing point, or temperature of other substances.

Thermometers $(i)$ and $(iii) $ are clinical thermometers used to measure body temperature and $(ii)$ is laboratory thermometer used to measure the temperature of boiling water or any object other than human body.

 Celcius scale is indicated by $^\circ C.$

$ (36.4 + 37.4 + 36.6) $ degree Celsius $= 110.4$
For getting average body tem we should divide: “Total temperature” by “Number of times” Therefore, $110.$
$\frac{4}{3}=36.8$ degree Celsius

$(36.4 + 37.4 + 36.6)$ degree Celsius $= 110.4$ For getting average body tem we should divide: “Total temperature” by “Number of times” Therefore, $110.4/3 = 36.8$ degree Celsius.

A clinical thermometer reads temperature from $35^\circ C$ to $42^\circ C.$

Trapped (still) air is good insulator.
Thermal conductivity of air is small as compared to solid and liquid. Eg- glass conducts $30$ times more power per unit distance per unit temperature than air.
The less dense the material, the less thermal conductivity. And gas (air) is least dense than solid and liquid.

Thermo flask is a special kind of flask for keeping liquids. It prevents loss or gain of heat by any of the three methods. It keeps liquid warm or cold for a long time. It was invented by Sir James Dewar in $1893.$ He was a Scottish chemist and physicist.

We know that metals are good conductors of heat and electricity. Generally, in cooking utensils are made of metals because they are good conductors of heat. Here, option $[C]$ is best suitable for this question.

Conduction occurs when two objects at different temperatures are in contact with each other. Heat flows from the warmer to the cooler object until they are both at the same temperature. Conduction is the movement of heat through a substance by the collision of molecules. This process continues until heat energy from the warmer object spreads throughout the cooler object, like the heat from the milk spreading throughout the metal spoon dipped in it. Hence, option $[A]$ is correct.

 The clinical thermometer is a specially designed thermometer to measure body temperature.
The range of a clinical thermometer is centered around the human body temperature which is from $35^\circ C$ to $42^\circ C.$

 Hint: It is on the name of one a physicist.
Solution: Step $1:$ Finding $SI$ unit of temperature:
One of the seven SI base units, the kelvin is the $SI$ unit of thermodynamic temperature. Unlike the rest of the $SI,$ the degree Celsius $(^\circ C)$ is a separate unit of temperature.