1).The amount of heat required to change the state of substance without change in temperature is _ (A)heat capacity (B)latent heat (C)specific latent heat (D)specific heat capacity Ans: latent heat 2).The reverse process of vapourization is __ (A)freezing (B)melting (C)steaming (D)condesation Ans: condesation 3).An iron rail is 20m long. How much will it expand when heated from 100c to 500c (linear expansivity of Iron = 1.2x10-5 0c-1) (A)96cm (B)0.96cm (C)0.096cm (D)960cm Ans: 0.96cm 4).The quantity of heat required to change 1kg of mass of a solid at its melting point to liquid at the same temperature (A)heat capacity (B)latent heat (C)specific latent of fusion (D)specific latent health of vaporation Ans: latent heat 5).Under a pressure of 14Nm-2, some air has a volume of 1.5m3. Determine its volume when its pressure is 10Nm-2. Assuming the temperature is kept constant (A)2.1m3 (B)3.1m3 (C)4.1m3 (D)3.5m3 Ans: 2.1m3 6).How much heat is needed to melt 1.5kg of ice and then to rise the temperature of the resulting water 500c? (A)8.1x 105J (B)8.5x 107J (C)8.1x 107J (D)8.1x 109J Ans: 8.1x 105J 7).How much heat is given out when 50g of steam at 1000c cool to water at 280c? (specific latent heat of vapourization of water =2.3x106Jkg-1) (A)1.4x105J (B)1.3x105J (C)1.6x107J (D)1.6x105J Ans: 1.3x105J 8).Some hydrogen gas has a volume of 200cm3 at 150c. If the pressure remain constant at what temperature will its volume be 150cm3? (A)270k (B)300k (C)216k (D)700k Ans: 216k 9).The volume of a small piece of metal is 5.000cm3 at 200C and 5.014cm3 at 1000C. Determine the cubic expansivity of the metal? (A)3.4x10-6K-1 (B)4x10-6K-1 (C)3.5x10-5K-1 (D)4x10-7K-1 Ans: 3.5x10-5K-1 10).A square sheat of steal has a side of 15cm at 00 C. Determine its area at 400C. (Linear expansivity of steel = 1.1x10-5 0C-1 (A)230.198cm2 (B)250cm2 (C)225.198cm2 (D)235.486cm2 Ans: 225.198cm2 ----------------------------------------------------------------------- 1. The degree of coldness and hotness is measured by using ANS. Thermometer 2. Use this to answer question 13 and 14. A platinum resistance thermometer has resistance of 10.40p at ¶0c and 14.35p at 1000c. Assuming that the resistance changes uniformly with temporarture, what is The temperature when resistance is 11.19 ohms? ANS. 200C 3. The changes in the atmosphere pressure and latitude cause variation in freezing and __ ANS. boiling point 4. The quantity of heat required to change a body\'s temperature by one degree telvin is known as _ ANS. heat capacity 5. The pressure of a galvamometer in a thermo-couple is to measure and detect the _ that flows in the circuit ANS. Current 6. The stem of __ thermometer is graduated from 350c to 450c ANS. Clinical 7. A metal container of heat capacity 2000J0c is heated from 150c to 450c what is the total quantity of heat required to do so? ANS. 6KJ 8. The heat energy delivered per second by a gas burner is _ ANS. Power 9. Convert 40o celsus to Fahrenheit scale ANS. 104Of 10. What is the resistance of the themometer when the temperature is 450C? ANS. 12.18 ohms ------------------------------------------------------------------- The temperature of steam rising from pure water boiling under standard atmopshere pressure is ______ steam point The temperature of equilibrum between ice, water and air saturated at standard pressure is called _____ lower fixed point The difference between the upper fixed point and the lower fixed point divided into equal parts is known as _____ fundamntal interval Walls through which heat can be transmitted are called _____ non-adiabatic ______ angency can cause increase in hotness of a body heat The type of wall in which no heat can be transmitted is called ______ adiabatic wall ______ law is used in establishing the temperature of a body quantitatively and objectively zeroth law Heat measurement is usually refers to ______ calorimentry _______ determines whether or not given systems are in thermal equlibrum temperature ___________ is a funcamental quality temperature