Select Board & Class
name 10 examples of conductors & insulators.
WHAT ARE GOOD AND BAD CONDUCTORS OF HEAT? EXPLAIN WITH EXAMPLES.
why we can't use laboratory thermometer to measuring human body temperature
why does a clinical thermometer have a kink?
what are 5 examples of bad conductors
WHY DO WE WEAR WOOLEN CLOTHES IN WINTER ?
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
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 are ventilators made close to the ceilings (give reasons)
precautions while reading a clinical thermometer?
Why is water a bad conductor of heat ?
why black colour umbrella is used in summer than a white one
what is a clinical thermometer?
What are its features and functions?
why does an aluminium window frame feel colder to touch than a wooden frame?
Shopkeepers selling ice blocks usually cover with jute sacks? Why?
WHY DOCTORS DIP THE THERMOMETER IN A LIQUID BEFORE USE? WHY IS IT KEPT UNDER THE TONGUE
WHY THE THERMOMETER IS KEPT UNDER THE TONGUE?
What happens to radiant heat when it falls on body?
Mud house are cool in summer and hot in winter . why ???????
A short-note on Green House ?
Slabes of ice are covered with saw dust or gunny bags.Give reason.
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 do we wear woollen clothes in winter & cotton clothes in summer?
what is kink present in thermometer
explain why gases expand more than liquis and solids
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?
why are car radiators painted black?
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)
mode of heat transfer in
1) A paper cup full of hot soup lying on the table
2) cooking vegetables in a pan
Q: why are you advised to use an umbrella when you go out in the sun?
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 is white petrol?
what are the conditions required for conduction fo heat?
WHATS THE DIFFERENCE BETWEEN A DIGITAL AND A CLINICAL THERMOMETER?(ANY 3 POINTS)
a clinical thermometer has the range of 35 degree to 42 degree .why
What is ice point and what is steam point?
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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