Heat

Question 1

____ is the property of a body that’ll determine the which heat will flow

Answer 1

Temperature

Question 2

Heat flows from body at _____ to a body at _____

Answer 2

Higher to lower

Question 3

When a body absorbs heat without changing its state its temp

Answer 3

Rises

Question 4

Heat depends on the

Answer 4

Mass of the body and the temperature

Question 5

Heat is a measure of

Answer 5

Total internal energy

Question 6

The measure of the average kinetic energy is

Answer 6

Temperature

Question 7

A thermometer that notices heat change with potential difference is

Answer 7

Thermocouple

Question 8

The response of the human sense of touch is influenced by its

Answer 8

Previous experience

Question 9

The standard atmospheric pressure is

Answer 9

760mm of mercury

Question 10

The difference between two temperature points is the

Answer 10

Fundamental interval

Question 11

The upper and lower fixed point of a farenheight scale

Answer 11

212•C and 32•C

Question 12

The temperature tagged as absolute zero is

Answer 12

-273•C and 0K

Question 13

The upper fixed point of an unmarked thermometer can be determined with an

Answer 13

Hypsonometer

Question 14

The 2 instruments used to determine the upper fixed point is the

Answer 14

Manometer and hyspometer

Question 15

The jonb of the manometer is

Answer 15

To keep the atmospheric pressure within 760

Question 16

An important precaution to know when getting the lower fixed point is that

Answer 16

The thermometer doesn’t come in contact with the boiling water

Question 17

The most common thermometers are the

Answer 17

Mercury and Alchohol

Question 18

The liquid in glass thermometer measures

Answer 18

Change in volume of a fixed mass of liquid

Question 19

For sensitivity a liquid in glass thermometer should have

Answer 19

A bulb made of thin glass,narrow capillary tube, A liquid with high expansivity

Question 20

A liquid with good expansivity should

Answer 20

Increase uniformly with change in temp
ii.Have high boiling point and low boiling point
iii.be easily seen in glass

Question 21

The disadvantage ofusing mercury in glass thermometer is the

Answer 21

Unreliability of its accuracy

Question 22

The main advantage of Mercury over Alchohol is its

Answer 22

High conductivity,High boiling point(357•C)it doesn’t wet glass

Question 23

The Advantage of Alchohol over mercury is

Answer 23

High freezing point,Better expansivity(6x)

Question 24

The most prominent feature of the thermometer is the

Answer 24

Kink or constriction

Question 25

The kink allows

Answer 25

The expanding Mercury to flow past it

Question 26

Its advisable not to sterilize the equipment because the

Answer 26

Thermometer has a small temperature range which doesn’t extend up to 100•C it will break

Question 27

The thermometer mainly used by weather men in meterological stations is

Answer 27

The sixes combined minumum and maximum thermometer invented by james sic

Question 28

The combined maximum and minimum temperature makes used of 2 materials namely

Answer 28

Alcohol and Mercury

Question 29

The materials mainly heated in a thermocouple is

Answer 29

Copper and constantan

Question 30

The galvanometer is usually used to

Answer 30

Determine the size of current by galvanometer

Question 31

The heat of the solid can be determined by the

Answer 31

Electrical method

Question 32

Heat lost by substance is reduced by

Answer 32

Polishing the outside of the calorimeter

Question 33

Calorimeter is an apparatus used

Answer 33

In experiments between bodies at different temps

Question 34

Factors affecting evaporation

Answer 34

Temp,Wind and dryness of the air,Pressure,Nature of the liquid,Area of liquid exposed

Question 35

2 liquids 35•C and 100•C BP which one will evaporate first

Answer 35

The one with. 35•C

Question 36

The main diff between Evap and boiling is

Answer 36

Evap occurs at the top,Boil occurs throughout the entire volume

Question 37

The presence of impurities ____ the boiling point but _____the freezing point

Answer 37

Raise and lowers

Question 38

Substances that can go from solids to vapour without passing through melting are

Answer 38

Dry ice,iodine,(they undergo sublimation)

Question 39

s.v.p increases with

Answer 39

Temperature

Question 40

The boiling point of a liquid is said to occur when the

Answer 40

Svp =Equal to the atmospheric pressure

Question 41

Relative humidity is

Answer 41

The mass ratio of waterr vapour presenf in the air to the ratio required to saturate it

Question 42

The air conditioner not only cools the air but it also

Answer 42

Cleans filters and circulate air in a room

Question 43

Dew point is the temperature at which the

Answer 43

Water vapour in the air is just enough to saturate it

Question 44

Dee point depends on prevalent atmospheric conditions like

Answer 44

Temp,Wind and amount of water vapour