Get a free home demo of LearnNext

Available for CBSE, ICSE and State Board syllabus.
Call our LearnNext Expert on 1800 419 1234 (tollfree)
OR submit details below for a call back

clear
searchtune
What people are asking?

Asked by Sagar kumar

Aug 7, 2013

Distinguish between  clinical and laboratory thermometers

1)the temperature range of clinical thermometers is from 35 to 42 degree centigrade while that of laboratory thermometer is from -10 to 110 degree centigrade. 2)clinical thermometer is used to measure the temp...

Answer (30)

Asked by Mohammad afaque

Oct 2, 2015

What is relation between Celsius and Fahrenheit?

The conversion formula for a temperature that is expressed on the Celsius (C) scale to its Fahrenheit (F) representation is...

Answer (2)

Asked by Shailendra kumar gupta

Aug 20, 2013

What is the fastest and slowest mode of heat transfer ?

Radiation is considered the fastest mode of heat transfer as it travells as fast as light. Conduction is considered the slowest mode of heat transfer as it moves from particle to particle.

Answer (11)

Asked by Anant

Apr 10, 2014

how many types of thermometer we have


There are two types of thermometers

Answer (5)

Asked by Kopal

Mar 11, 2014

Q: What is sea breeze?

Q:  It is land breeze?

What is sea breeze?
During the day, the land gets heated faster than the water. The air over the land becomes hotter and rises up. The cooler air from the sea rushes in towards the land ...

Answer (1)

Asked by Sneha RoyChowdhury

Jul 14, 2015

Why mercury is used as a thermometric fluid ?

Sol:


There are many reasons for using mercury as a thermometric liquid, here are listed a few:
  • Mercury has high melting and boiling points making it a liquid over a broad range of temperature.
  • Since it is a metal, it has a stable coefficient of expansion hence it expands uniformly and noticeably for a slight change of temperature.
  • Mercury is a non sticky viscous metal and hence it makes a clear meniscus, helpful in readings.
  • Mercury will not expand when it solidifies hence it doesn’t break the glass tube of the thermometer.

Answer.

1. It expands uniformly when heated.

Answer (2)

Asked by Deeksha

May 18, 2014

In places of hot climate it is advised that outer wall of house should be painted white?Exlain.

Answer.
    In places of hot climate the outer walls of the house are painted white as we know that the white colour reflects the rays of the sun where as darker...

Answer (4)

Asked by CHRIS ---

Aug 23, 2015

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

a. CONDUCTION
b. MORE THAN 50 DEGREES CELSIUS BUT LESS THAN 80 DEGREES CELSIUS
c. 20 DEGREES CELSIUS
d. BETWEEN 30 DEGREES CELSIUS AND 50 DEGREES CELSIUS

d. BETWEEN 30 DEGREES CELSIUS AND 50 DEGREES CELSIUS

Answer (2)

Asked by CHRIS ---

Aug 12, 2015

Why are two thin blankets usually warmer than one thick blanket ?

Air is trapped in the space between two thin blankets. Since air is an insulator of heat, it prevents the escape of body heat. That is why two thin blankets are usually warmer than one thick blanket.

Answer (2)

Asked by Joanne James

Jul 3, 2015

Why are ventilators in house provided at the top of walls?

Ventilators are provided in the rooms at the top of the roofs, just below the roofs because if the air inside the room gets hot thehot  air rises up and flow through these ventilators and thus cool air rem...

Answer (1)

Filters