QUIZ on HEAT, ACIDS, BASES &SALTS by PRABHAKAR MIRIYALA

The value of -73⁰C in Kelvin scale is

• 73 K

• -346K

• 200 K

• 0 K

SI unit of specific heat is

• J/Kg.K

• cal/gr.⁰C

• joiles

• calorie

Large oceans moderate the climatic temperatures of surrounding coastal land areas because the temperature of ocean water changes

• rapidly, due to water’s low specific heat

• rapidly, due to water’s high specific heat

• slowly, due to water’s low specific heat

• slowly, due to water’s high specific heat

What is the SI unit for temperature?

• Kelvin
• Celcius
• Fahrenheit
• All of these

What would be the final temperature of a mixture of 50gr. of water at 40⁰C is mixed with 100gr. of water at 40⁰C?

• 60⁰C

• 20⁰C

• 30⁰C

• 40⁰C

Thetemperatures of A,B,C and D are 24⁰C, 280 K, 297 K and 280⁰C respectively. which areain thermal equilibrium

• B and D

• A and D

• A and C

• B andC

1 cal/gm. $\degree C$  =  -------- J/Kg.K

• 4186

• 4.186

• 41.86

• 418.6

The average kinetic energy of the molecules is directly proportional to ---

• physical state

• absolute temperature

• melting point

• specific heat

4 gr. of liquid A at 60^o C is mixed with 1 gr. of liquid B at 50⁰ C. Final temperature pf the mixture is 55⁰ C. then the ratio of specific heats

is.......

• 2:1

• 1:2

• 4:1

• 1:4

The CGS value of specific heat of ice is 0.5 cal/gr.⁰C , it value in S.I system is(1cal = 4.2 J)

• 0.21 J/Kg.K

• 0.42 J/Kg.K

• 2100 J/Kg.K

• 4200 J/Kg.K