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Chapter 1: Heat and Temperature MCQ-7 (in Hindi)
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In this lesson discuss the Heat and temperature most important MCQ's for Railway AlP CBT2.

Vishal Garg
Mechanical Engineer | Unacademy Plus Educator | Railway Category Expert | Follow me to learn Reasoning |

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  1. Vishal Garg (B.Tech ME Er.) Star and Verified Educator unacademy SSC and Railway Category Expert


  2. INDI Basic Science & gineering RRB ALP & Technicians Recruitment 2018 for Railway ALP CBT2 Complete Course with MCO By Vishal Garg


  3. Basic Science & gineering INDIA RRB ALP & Technicians Recruitment 2018 for Railway ALP CBT2 Heat and Temperature Important MCQ's


  4. An iron ball at 40 C is dropped in a mug containing water at 40 C. The heat will (a) not flow from iron ball to water or from water to iron 33. (b) (c) (d) ball flow from iron ball to water flow from water to iron ball none of the above 34. Clothes of colours absorb heat better than clothes colours. (b) dark, light (d) none of the above (a) light, dark (c) soft, dark The water is poor conductors of heat so do not heated by: (a) absorption (c) radiation 35. (b) conduction (d) convection


  5. The materials which allow heat to pass through them easily are called as: (a) insulators . (b) conductors of heat (c) semi conductors (d) none of the above 36. 37. Stainless steel pans are usually provided with copper bottoms. The reason for this could that. (a) copper bottom makes the pan more durable such pans appear colorful copper is a better conductor of heat than the stainless steel (c) (d) none of the above


  6. The equation relating the heat transfer rate glass window consists of: (a) surface area (b) thickness (c) thermal conductivity value (d) All the above Absolute zero on Kelvin scale is equal to (a) 373K (c) 0K 38. 39. (b) (d) 273 K None of above


  7. 40. Temperature of core of earth is equal to 3727 C. This temperature in Kelvins is equal to (a) 4000K (c) 3454HK Boiling point of mercury is equal to 630 K. This temperature in Celsius is equal to (a) 357 C (c) 903 0 (b) 3727K (d) None of above 41. (b) 630 0C (d) None of above


  8. 42. Heat capacity of a substance is (a) inversely proportional to change in temperature (b) directly proportional to change in temperature (c) inversely proportional to square of change in temperature (d) independent of change in temperature Heat capacity of a substance is defined as (a) amount of heat required to raise temperature of a 43. substance by 1 K (b) amount of heat required to raise temperature of a substance by 1 C (c) specific heat capacity x mass of substance (d) All of above


  9. Heat applied to a piece of metal will cause (a) (b) (c) (d) Heat capacity of a substance is equal to (a) amount of heat required to raise temperature ofa 1 kg 44. increase in its mass increase in its volume increase in its density increase in its internal energy 45. (b) amount of heat required to raise temperature of a (c) amount of heat required to change phase of a (d) amount of heat required to change phase of a of a substance by 1 K substance by 1 K substance from solid to liquid without any change in temperature substance from liquid to gas without any change in temperature


  10. The form of energy that flows from a hot objec object is called_ (a) Temperature (b) Thermometeir (c) Heat (d) Light One litre of water at 30 C is mixed with one litre ofwatera 50 C. The temperature ofthe mixture will be (a) 80 0c (b) more than 50 C but less than 80 C (c) 20 C (d) between 30 C and 50 C 46. t to a cold 47.