One Litre of Water at 30°C is Mixed with One Litre of Water at 50°C. the Temperature of the Mixture Will Be - Science


One litre of water at 30°C is mixed with one litre of water at 50°C. The temperature of the mixture will be


  •  80°C

  • more than 50°C but less than 80°C

  • 20°C

  • between 30°C and 50°C



Between 30°C and 50°C.

Concept: Measuring Temperature
  Is there an error in this question or solution?
Chapter 4: Heat - Exercises [Page 46]


NCERT Science Class 7
Chapter 4 Heat
Exercises | Q 8 | Page 46


Fill in the blanks:

The hotness of an object is determined by its __ __.

Fill in the blanks:

Temperature is measured in degree ___ _.

An iron ball at 40°C is dropped in a mug containing water at 40°C.

The heat will

Write true or false.

S.I. unit of temperature is Fahrenheit.

Fill in the blank:

The zero mark in Celsius thermometer is the melting point of ...........

Fill in the blank:

The thermometer used to measure the human body temperature is called the ........... thermometer.

Fill in the blank:

The normal temperature of human body is ............ °C or...........°F.

What does the temperature measure?

Name the instrument used for measuring the temperature of a person. Draw its labelled neat diagram.

Fill in the blank.

The lower fixed point in a laboratory thermometer is the same as that of ................

State if the following statement is true or false. Correct the statement if it is false.

Water is the most commonly used thermometric substance.

Answer the following in a word or two or in a sentence.

At what temperature is the upper fixed point of a clinical thermometer kept?

Answer the following in short.

What is the function of the bulb in a thermometer?

International unit of measuring temperature is ______.

Which of the following temperature conversions is incorrect

K ( Kelvin) = °C ( Celsius) + 273.15

Doctor uses ______ thermometer to measure the human body temperature.

At room temperature Mercury is in ______ state.

Swathi kept a laboratory thermometer in hot water for some time and took it out to read the temperature. Ramani said it was a wrong way of measuring temperature. Do you agree with Ramani? Explain your answer.

Higher Order Thinking question

What must be the temperature in Fahrenheit, so that it will be twice its value in Celsius?

The freezing point of alcohol is less than ______.

What is the average internal temperature of the human body?

Shopkeepers selling ice blocks usually cover them with jute sacks. Explain why.


      Forgot password?
Use app×