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## Workshop Calculation and Science

#### Year 1 Module 6

1: Which refers the temperature
A : It is a form of energy

B : It tells the state of heat
C : It tells specifie heat of substance
D : It is measured by calorie meter

2: What is the S.I unit of heat
A : Calorie

B : Joule
D : British thermal unit

3: Which instrument is used to measure heat

A : Calorie meter
B : Thermometer
C : Pyrometer
D : Barometer

4: What is the quantity of heat required to raise the temperature of 1 gram of water through 1°C is called
A : Specific heat

B : Colorie
C : British thermal unit

5: What is the value for specific heat of water
A : 4
B : 3
C : 2

D : 1

6: Which type heat is the heat absorbed or given off by a substance without changing its physical state
A : Latent heat

B : Sensible heat
C : Specific heat
D : Latent heat of steam

7: What is the boiling point of water in Fahrenheit scale

A : 212°F
B : 180°F
C : 112°F
D : 100°F

8: What is the freezing point of water in kelvin scale (K)
A : 373°K
B : 313°K
C : 303°K

D : 273°K

9: Convert 45°C (Centigrade) into °F (Fahrenheit).
A : 110°F
B : 111°F
C : 112°F

D : 113°F

10: At what temperature will Fahrenheit and centigrade thermometers give the same reading
A : 38°C
B : 39°C

C : 40°C
D : 41°C

11: Convert  273°C (Centigrade) into kelvin scale

A : 0°K
B : 1°K
C : 2°K
D : 3°K

12: What is the value in degree centigrade for 20°F
A : 6.37°C
B : 6.47°C
C : 6.57°C

D : 6.67°C

13: What is the maximum temperature that can be measured by mercury thermometer
A : 400°C

B : 300°
C : 200°C
D : 100°C

14: What is the name of temperature measuring instrument
A : Vapour pressure thermometer

B : Bimetalic thermometer
D : Thermoelectric pyrometer

15: Which instrument is used to measure temperatures of red hot metals up to 3000°C

B : Thermoelectric pyrometer
C : Bimetal thermometer
D : Alcohol thermometer

16: Which type of heat transmission takes place through physical contact

A : Conduction
B : Convection
D : Reflection

17: Which kind of heat transmission takes places by upward flow
A : Conduction

B : Convection
D : Reflection

18: Which one is the radiation method of heat transmission
A : An iron rod is heated with one of its end and heat transmitted to other end
B : Cold water goes to the bottom from top while on heating the water
C : On heating gases heat transmitted to surroundings

D : The heat from sun travels through the space

19: What is called if the length of the solid expands when heated

A : Linear expansion
B : Superficial expansion
C : Cubical expansion
D : Area expansion

20: What is the change in length per unit original length per degree rise in temperature is called
A : Coefficient of friction

B : Coefficient of linear expansion
C : Coefficient of superficial expansion
D : Coefficient of cubical expansion

21: What is the unit of coefficient of linear expansion

A : Number /°C
B : Number /°C / meter length
C : Number /°C / mm length
D : Number /°C / cm length

22: What is term used for 2 x linear expansion
A : Coefficient of friction
B : Coefficient of linear expansion

C : Coefficient of superficial expansion
D : Coefficient of cubical expansion

23: What is term called for 3 x linear expansion
A : Coefficient of friction
B : Coefficient of linear expansion
C : Coefficient of superficial expansion

D : Coefficient of cubical expansion

24: What is the coefficient of linear expansion of a rod if it is found to be 100 m long at 20°C and 100.14 m long at 100°C
A : 1.75 x 104 / °C

B : 1.75 x 105 / °C
C : 1.75 x 106 / °C
D : 1.75 x 107 / °C

25: What is called for the amount of heat required to raise the temperature of unit mass of a substance through 1°C
A : Sensible heat
B : Latent heat

C : Specific heat
D : Mixing of heat

26: How much quantity of heat is required?
m = 120 litres
t1 = 20°C
t2 = 85°C
S = 4.2
Q = _____ KJ

A : 32750 KJ

B : 32760 KJ
C : 32770 KJ
D : 32780 KJ

27: Calculate the amount of heat required to raise the temperature of 85.5 gm of sand from 20°C to 35°C specific heat of sand
A : 128.25 Joules
B : 125.28 Joules
C : 128.26 Joules
D : 126.28 Joules

28: What is the specific heat of the material if we require 510 calories to raise the temperature of 170 gm of material from 50°C to 80°C

A : 0.1
B : 0.01
C : 1.1
D : 1.11

29: How much quantity of heat is required to raise the temperature of 300 grams of copper (sp.heat 0.092 cal/gram) from 25°C to 75°C in Kcal
A : 138 Kcal

B : 1.38 Kcal
C : 207 Kcal
D : 2.07 Kcal

30: How much heat is absorbed by a copper ingot weighing 400 Kg is heated
A : 1521 Kcal
B : 1251 Kcal

C : 1152 Kcal
D : 1215 Kcal

31: What is called for the materials that restricts heat flow by radiation conduction and convection
A : Conductors

B : Insulators
C : Ferrous
D : Nonferrous

32: Which one is heat insulator

A : Thermocole
B : Copper
C : Brass
D : Aluminium

33: Which one has the highest thermal conductivity

A : Solid ice
B : Melting ice
C : Water
D : Steam

34: Which one of the following is not a property of heat insulating material
A : Low conductivity
B : Resistance to fire
C : Less moisture absorption

D : Ductility

35: Which insulating material is most widely used in refrigerators
A : Thermocole

B : Polyurethane
C : Glass wool
D : Cork sheet

36: Which one is a poor heat insulator

A : Glass
B : Cork
C : Rubber
D : Saw dust

37: What is known for the temperature at which any solid melts into liquid
A : Boiling point

B : Melting point
C : Latent heat of fusion
D : Latent heat of vaporisation

38: What is the melting point of aluminium

A : 660°C
B : 680°C
C : 670°C
D : 620°C

39: What is the boiling point of aluminium
A : 1897°C

B : 2519°C
C : 2469°C
D : 660°C

40: What is the boiling point of water
A : 0°C
B : 32°C

C : 100°C
D : 212°C

41: What is the melting point of mercury
A : 357°C
B : 209°C
C : 7.1°C

D : 38.72°C

42: What is the boiling point of mercury
A : 357°C
B : 280°C
C : 759°C
D : 767°C

43: What is the ratio of force (or) thrust per unit area
A : Work
B : Power

C : Pressure
D : Energy

44: What is the equivalent pascal value for 1 bar

A : 105 pascal
B : 107 pascal
C : 103 pascal
D : 109 pascal

45: What is the SI unit of pressure
A : Joule

B : Pascal
C : Bar
D : Newton

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