Heat is reffered as transfer of energy from hot object to cool object. When heat is given to any object its temprature rises, so the temprature is the degree of hotness of a substance. Temprature is measured in the unit of degree Celsius or Kelvin(k). The Kelvin Temprature Scale is also called as Absolute Temprature Scale.

Celsius Scale of Temprature

On Celsius scale of temperature 0° represents the melting point of ice and 100° represents the boiling point of water.

Kelvin Scale of Temprature

A scale of temperature beginning at absolute zero (-273.15°C). Each degree, or kelvin, has the same value as one degree on the Celsius scale. On the Kelvin scale water freezes at 273.15 K and boils at 373.15 K.
Temprature on kelvin scale = Temprature on Celsius scale + 273,
K = C + 273

Measurement of Temperature

The temperature of a body is measured by an instrument called thermometer. Their are two types of thermometer which are commonly used:

  1. Labortory Thermometer : It is a mercury thermometer. A common laboratory thermometer can measure tempratures from -10° C to 110° C.
  2. Clinical Thermometer : It is used to measure the temprature of human body, it have a very small range of temprature from 35° C to 42° C, this is because the temprature of human body never goes beyond these temprature


Thermal Equilibrium

When two bodies are in contact with each but no heat flows from one body to the other this condition is known as thermal equilibrium

Units of Heat

The SI unit of heat is Jule how ever heat is also measured in calorie, 1calorie = 4.18 joules

Specific Heat

The amount of heat which is used to raise the temprature of unit mass by one degree celcius is known as specific heat and its SI unit is 'joule/kg/degree celcius'

Thermal Expension

The expansion of a body due to increase in temprature is called as thermal expension. Their are many type of expension in body. Like linear expansion, circular expansion, cubical expension etc.

Latent Heat

When heat is supplied to change the state of a substance and there is no rise in temperature of the substance. The SI unit of latent heat is Jule.

  1. Latent Heat of Fusion: The latent heat of fusion of a substance is the amount of heat required to convert a unit mass of the substance from the solid state to the liquid state without change of temprature
  2. Latent Heat of Vaporization: The heat required to convert a liquid into the vapour state is called latent heat of vaporization. The latent heat of vaporization of a substance is the amount of heat required to change a unit mass of the substance from the liquid state to vapour state without change of temprature



The process of changing liquid into vapour even below its boiling point is called as evaporation.


The presence f water vapour in the air is known as its humidity. The air containing maximum possible amount of water vapour in it, is said to be saturated.

Latest Current Affaris

Current affairs 05/06/2019
Current affairs 05/06/2019

1). Comptroller and auditor general Rajiv Mehrishi has been appointed as the external auditors of World Health Organisation (WHO) for a four year term from 2020-23. 2).World Environment Day is observed on 5 June(Theme: The Air Pollution). 3). Madhya Pradesh cabinet has passed a resolution to increase reservation of OBC's 27%.

करंट अफेयर्स 03-04/06/2019
करंट अफेयर्स 03-04/06/2019

1. नयब बुकेले को ईआई सल्वाडोर के राष्ट्रपति के रूप में चुना गया है। (ईआई सल्वाडोर की राजधानी: सैन सल्वाडोर, मुद्रा: संयुक्त राज्य अमेरिका डॉलर) 2. राष्ट्रीय सुरक्षा सलाहकार (NSA) अजीत डोभाल की दोबारा अपने पद पर नियुक्ति हुई। NDA सरकार के दूसरे कार्यकाल में उन्हें कैबिनेट रैंक दिया गया है। 3. 3 जून को विश्व साइकिल दिवस मनाया जाता है।

Current affairs 03-04/06/2019
Current affairs 03-04/06/2019

1. Nyaib Bukele has been Sworn in as the president of  EI Salvador ( EI Salvador's capital: San Salvador, currency: United States Dollar). 2. National Security Advisor (NSA) Ajit Doval reappointed to his post and given Cabinet rank in the second term of the NDA government. 3. World Bicycle Day is observed on 3rd June .

Current Affairs Quiz

डेली जीके क्विज 17/05/2019
डेली जीके क्विज 17/05/2019

1. भारतीय नौसेना प्रमुख का नाम बताएं? 2. हाल ही में ICC द्वारा पहली महिला मैच रेफरी के रूप में किसे नियुक्त किया गया है? 3. हाल ही में एक हल्के खेल विमान (एलएसए) में अटलांटिक महासागर को पार करने वाली दुनिया की पहली महिला कौन बनी है?

Daily Gk Quiz 17/05/2019
Daily Gk Quiz 17/05/2019

1. Name the Indian Navy Chief? 2. Recently who has been appointed as first female match referee by ICC? 3. Recently who has becomes the world’s first woman to cross the Atlantic Ocean solo in a light sports aircraft (LSA)?

डेली जीके क्विज 29/09/2018
डेली जीके क्विज 29/09/2018

प्रश्न 1)। हाल ही में एशियाई विकास बैंक (एडीबी) ने राज्य में रोजगार को बढ़ावा देने के लिए मध्य प्रदेश में पहला बहु-कौशल पार्क स्थापित करने के लिए 150 मिलियन डॉलर के ऋण को मंजूरी दे दी है। एडीबी के अध्यक्ष कौन हैं? प्रश्न 2)। परकर्म परव किस अवसर पर मनाया जा रहा है? प्रश्न 3)। भारत की लाइव स्टॉक जनगणना 1 अक्टूबर से शुरू होने वाली है। इस तरह की कितनी जनगणना पहले आयोजित की गई है और यह कौन सी जनगणना है?