Introduction to heat - class-IX
Description: introduction to heat | |
Number of Questions: 27 | |
Created by: Vinaya Modi | |
Tags: paths of heat flow heat and energy measurement and effects of heat heat - measurement thermal properties of matter properties of bulk matter heat and temperature heat and thermodynamics temperature and heat heat physics thermal physics |
Heat energy produces a sensation of-
State whether given statement is True or False
A wooden chair feels colder than an iron chair in winter
State whether given statement is True or False :
Heat will flow from
Beaker A contains hot water. Beaker B contains cold water. Beaker C contains a mixture of hot and cold water. If initially your hand is put into a beaker containing ice, then putting your hand in which of the beakers A, B or C will give a sensation of warmth?
A thermostat is?
Reading of temperature may be same on
Three liquids A, B and C are at temperature of $60^{o}C, 55^{o}C$ respectively $4g$ of A mixed with $3g$ of C gives $65^{o} C$ and $2g$ of A mixed with $3g$ of B gives $57^{o}C$. The temperature of the mixture when equal masses of $B$ and $C$ are mixed is
The temperature of equal masses of three different liquids $A, B$ and $C$ are $12^{o}C, 19^{o}C$ and $28^{o}C$ respectively. the temperature when A and B are mixed is $16^{o}C$, when B and C are mixed is $23^{o}C$ what is the temperature when A and C are mixed
The standard fixed point for temperature measurement is used these days is :
During burning of a candle, different zones of combustion in the flame are listed below:
B. innermost zone
C. middle zone
The correct order of temperature of zones is :
At what temperature is the Fahrenheit scale reading equal to twice of Celsius ?
A man wishes to fit an aluminium ring on steel rod of 1 cm diameter and found it is 0.01 cm smaller in diameter. How much should the on temperature be raised before it just slips on the
$(\alpha _A = 25 \times 10^{-6}/^oC;$ $10 \times 10^{-6}/^oC)$
Which of the following physical quantities is measured in calories ?
Name the S.I. unit of heat.
State the S.I. unit of heat capacity.
1 cal = _________
The SI unit of heat is:
Therm is a unit of
For a gm molecule of an ideal gas
The quantity of heat energy required to change the temperature of one gram of water by one degree Celsius is known as
One calorie is defined as
1 volt is equivalent to:
The temperature range in the definition of calorie is
1 Joule $=$
Out of the metal balls of same diameter one is solid and other is hollow. Both are heated to the same temperature at $300^{0}C$ and then allowed to cool in the same surroundings then rate of loss of heat will be:
The amount of heat required to raise the temperature of 1 kilogram of water by $1:^oC$ is called :