Uses of good and poor conductors in daily life - class-VI
Description: uses of good and poor conductors in daily life | |
Number of Questions: 41 | |
Created by: Amish Majumdar | |
Tags: temperature and heat clothes - our necessity evs - i thermal properties of matter heat properties of bulk matter physics heat transfer transfer of heat |
If we keep pop corn in a pressure cooker on a flame, heat is transferred from flame to corn by :
The molecules of medium vibrate about their mean positions during heat transfer in the process of
Air is a bad conductor of heat because:
.................. surface absorbs more heat than any other surface under identical conditions.
The heat transfer in air is poor because
Seema is planning a trip to Kashmir this summer. Which of the following clothes should she definitely pack?
Which of the following is not a valid reason for using cotton clothes in Summer ?
Why do we wear cotton clothes in Summer ?
Which of the following is a wrong pair of clothes worn during a particular season ?
Wool is used in making garments used in winter because
Which of the following fabrics is preferred for winter garments ?
Which of the following is not a reason for using woolen clothes in Winter ?
How does air trapped by the woolen fabric help ?
When a metal conductor connected to left gap of a meter bridge is heated, the balancing point.
Which of the following circular rods (given radius r and length l), each made of the same material and whose ends are maintained at the same temperature will conduct most heat?
A shining metallic ball with a small black spot on its surface is heated to very high temperature and then quickly taken to a dark room. Then.
If object A and object B has no transfer of heat, then they both are in
Good conductor of heat is
Air is a _______ conductor of electricity.
Air is a good conductor of heat. True or false.
Wearing black clothes in summer is more preferable. True or false.
State whether given statement is True or False
Two thin blankets are more warmer than one thick blanket
Good conductors of heat is
Why tubes of a boiler are covered with layer of asbestos?
Which of the following materials is used to make clinical thermometer?
The thermometric liquid should be a
A cold steel serving spoon is dipped in hot mushroom soup. It transfers heat to its other end by process of
Which of the following is a good conductor of heat?
__and__are good conductors of heat
State the correct statement
Bad conductor of heat is
The ............ the conductor, the more rapidly does heat transfer takes place.
The reason for providing copper bottoms in steel pans is :
Four rods of same material but with different radii and lengths are used to connect two reservoirs of heat with the same temperature difference. Which one will conduct more heat
Which of the following arrangements is correct on the basis of conductivity of materials?
What will be the conductivity of pure silicon crystal at 300 K temperature if electron cottoer pair at this temperature is $ 1.072 \times 10^{10} /cm^3 $ and $ \mu _n = 1350 cn^2 /V-s and \mu _p = 480 cm^2/ V-s $ ?
Inorder to have a difference of $25 \,cm$ in their length at all temperatures, the lengths of iron and copper rods at $0^o C$ are $(\alpha _{iron} = 12 \times 10^{-6} {^oC}^{-1}, \alpha _{copper} = 17 \times 10^{-6} {^oC}^{-r})$
The heat capacity of a body depends on
In a steady state of thermal conduction, temperature of the ends $A$ and $B$ of a $20cm$ long rod are $100^oC$ and $0^oC$, respectively. What will be the temperature of the rod at a distance of $6cm$ from the end $A$ of the rod?
Which of the following is a bad conductor of heat?