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name 10 examples of conductors & insulators.
A wooden spoon is dipped in a cup of ice cream. Its other end
(a) becomes cold by the process of conduction.
(b) becomes cold by the process of convection.
(c) becomes cold by the process of radiation.
(d) does not become cold.
is the answer to this (d) does not become cold?
WHAT ARE GOOD AND BAD CONDUCTORS OF HEAT? EXPLAIN WITH EXAMPLES.
Test solution Effect on red litmus paper Effect on blue litmus paper Inference
Lemon juice No change Red Acidic
Tap water No change No change Neutral
Detergent solution Blue No change Basic
Aerated Drink Blue No change Basic
Soap solution Blue No change Basic
Shampoo Blue No change Basic
Common Salt solution No change No change Neutral
Sugar solution No change No change Neutral
Vinegar No change Red Acidic
Baking soda solution Blue No change Basic
Milk of magnesia Blue No change Basic
Washing soda solution Blue No change Basic
Lime water Blue No change Basic
Test solution Effect on turmeric solution Remarks
Lemon juice No colour change Acidic
Orange juice No colour change Acidic
Vinegar No colour change Acidic
Milk of magnesia Red Basic
Baking soda Red Basic
Lime water Red Basic
Sugar No colour change Neutral
Common salt No colour change Neutral
What about sugar and common salt with turmeric solution? How do we conclude about the nature?
why we can't use laboratory thermometer to measuring human body temperature
WHY DO WE WEAR WOOLEN CLOTHES IN WINTER ?
why does a clinical thermometer have a kink?
why are car radiators painted black?
what are 5 examples of bad conductors
can a clinical thermometer be used to measure the temperature of boiling water ? why ?
Why are two thin blankets usually warmer then one thick blanket ?
Explain land breeze and sea breeze?
name some bad conductors of heat
Q: why are you advised to use an umbrella when you go out in the sun?
Shopkeepers selling ice blocks usually cover with jute sacks? Why?
why are ventilators made close to the ceilings (give reasons)
handle of pressure cooker is covered with thick plastic.why
precautions while reading a clinical thermometer?
Mud house are cool in summer and hot in winter . why ???????
why black colour umbrella is used in summer than a white one
Why is water a bad conductor of heat ?
what is a clinical thermometer?
What are its features and functions?
What is the purpose of constriction in the clinical thermometer?
Q4 why laboratory thermometer does not have a kink?
Q5 what precautions will you observe while using a clinical thermometer?
Q6 describe an experiment to show convection currents in a liquids.
why does an aluminium window frame feel colder to touch than a wooden frame?
WHY DOCTORS DIP THE THERMOMETER IN A LIQUID BEFORE USE? WHY IS IT KEPT UNDER THE TONGUE
what are the conditions required for conduction fo heat?
Q6. Give reasons for the following
WHY THE THERMOMETER IS KEPT UNDER THE TONGUE?
how can you prove that hot and cold are relative terms?
What happens to radiant heat when it falls on body?
A short-note on Green House ?
a beggar wrapped himself with a few layers of newspapers on a cold winter night . this helped him to keep himself warm becaue
1.friction between the layers of newspapers produces heat
2.air trapped between the layers of the newspapers is a bad conductor of heat.
3.newspaper is a conductor of heat
4.newspaper is at a higher temperature than the temperature of the surroundings
please ans my question among these 4 options.please
Slabes of ice are covered with saw dust or gunny bags.Give reason.
why do we wear woollen clothes in winter & cotton clothes in summer?
explain why gases expand more than liquis and solids
value based questions
nitika's neighbour ,Mrs Sharma , is an old lady and lives alone .she doesn't keep well .nitikatakes some hot home -madevegetables soup made by her mother ,in a thermos flask for her.
1.why does nitika's mother use a thermos flask ?
2. what value can we learn from nitika?
what is kink present in thermometer
why mercury does not fall or rise in a clinical themometer when taken out of the mouth?
what is the difference between conduction, convection and radiation?
What is ice point and what is steam point?
why wearing more layers of clothing during winter keeps us wrmer than wearing just one thickpiece of clothing?
Why do wet clothes dry faster in winter than in the rainy season?
WHY DO PEOPLE PREFER TO WEAR DARK CLOTHES IN WINTER AND LIGHT CLOTHES IN SUMMER?(HERE LIGHT MEANS LIGHT COLUORED CLOTHES FOR EG.WHITE)
. A marble tile would feel cold as compared to a wooden tile on a winter morning, because the marble tile
(a) is a better conductor of heat than the wooden tile. 9answer)
(b) is polished while wooden tile is not polished.
(c) reflects more heat than wooden tile.
(d) is a poor conductor of heat than the wooden tile.
kindly check the answer for the question, please!
Which of the thermometers, A or B, will show a greater rise in temperature? Give reason for your answer.
mode of heat transfer in
1) A paper cup full of hot soup lying on the table
2) cooking vegetables in a pan
What is the lower point of an ordinanary laboratry thermometer
is human body an insulator or conductor of heat
What is white petrol?
WHATS THE DIFFERENCE BETWEEN A DIGITAL AND A CLINICAL THERMOMETER?(ANY 3 POINTS)
how are trade winds caused?
a clinical thermometer has the range of 35 degree to 42 degree .why
what is conductor and insulator . give some examples ?
Two test tubes full of water are heated -one from below and the other from near the top. In which case will the water heat up faster and why?
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