7th Standard Syllabus & Materials
7th Standard
Tamilnadu 7th Standard Maths T2 - родроХро╡ро▓рпН роЪрпЖропро▓ро╛роХрпНроХроорпН Important Questions And Answers Study Material - QB365 Set B
NEW7th Standard
Tamilnadu 7th Standard Maths T2 - родроХро╡ро▓рпН роЪрпЖропро▓ро╛роХрпНроХроорпН Important Questions And Answers Study Material - QB365 Set A
NEW7th Standard
Tamilnadu 7th Standard Maths T2 - ро╡роЯро┐ро╡ро┐ропро▓рпН Important Questions And Answers Study Material - QB365 Set C
NEW7th Standard
Tamilnadu 7th Standard Maths T2 - ро╡роЯро┐ро╡ро┐ропро▓рпН Important Questions And Answers Study Material - QB365 Set B
NEW7th Standard
Tamilnadu 7th Standard Maths T2 - ро╡роЯро┐ро╡ро┐ропро▓рпН Important Questions And Answers Study Material - QB365 Set A
NEW7th Standard
Tamilnadu 7th Standard Maths T2 - роЗропро▒рпНроХрогро┐родроорпН Important Questions And Answers Study Material - QB365 Set C

Published on: 30/09/2019
Heat and Temperature
Download Tamil Nadu 7th Standard Science question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Science Test1.
Mercury is often used in laboratory thermometers because it _______.
is a harmless liquid
is silvery in colour and is attractive in appearance
Expands uniformly
is a low cost liquid
2.
The body temperature of a healthy man is; ________.
00C
370C
980C
1000C
3.
International unit of measuring temperature is _______.
Kelvin
Fahrenheit
Celsius
Joule
4.
The common laboratory thermometer is a _______ thermometer.
5.
-70C temperature is _____ than 00C temperature.
6.
Heat energy transfer from ________ to ______.
7.
At room temperature Mercury is in _______ state.
8.
Doctor uses _________ thermometer to measure the human body temperature.
9.
Melting point of water
10.
Boiling point of water
11.
Heat
12.
Normal temperature of human body
13.
Clinical thermometer
14.
Why do we jerk a clinical thermometer before we measure the body temperature?
15.
What is the use of kink in clinical thermometer?
16.
Jyothi was prepared to measure the temperature of hot water with a clinical thermometer. Is it right or wrong? Why?
17.
The body temperature of Srinath is 990F. Is he suffering from fever? If so, why?
18.
Swathi kept a laboratory thermometer in hot water for some time and took it out to read the temperature. Ramani said it was a wrong way of measuring temperature. Do you agree with Ramani? Explain your answer.
19.
Draw the diagram of a clinical thermometer and label its parts.
20.
Go to a veterinary doctor (a doctor who treats animals). Discuss and find out the normal temperature of domestic animals and birds.
21.
What must be the temperature in Fahrenheit, so that it will be twice its value in Celsius?
1.
(c)
Expands uniformly
2.
(b)
370C
3.
(a)
Kelvin
4.
( )
Celsius
5.
( )
less
6.
( )
high temperature to low temperature
7.
( )
Liquid
8.
( )
Clinical
9.
0oC
10.
100°C
11.
A form of energy
12.
37°C
13.
Kink
14.
Before we measure the body temperature jerk the thermometer a few times to bring the level of the mercury down.
15.
The kink prevents the mercury from flowing back into the bulb when the thermometer is taken out of the patients mouth.
16.
It is wrong. Clinical thermometer indicates only 35°C to 42°C. So hot water is greater than 42°C. So it is wrong.
17.
No. Srinath is not suffering from fever. No person always has exactly the same temperature at every moment of the day. Temperature cycle regularly up and down through the day according to activities and external factors.
18.
Yes, Ramani's statement is correct. I agree Ramani statement. because laboratory thermometer has no kink. When thermometer is taken out from the hot water, the mercury level will fall. We can't measure the correct temperature.
19.
20.
\(\begin{array}{|l|c|} \hline \text { Animals and birds } & \text { Temperature (celsius) } \\ \hline \text { Dog } & 37.5-39.09 \\ \hline \text { Cat } & 38.0-39.5 \\ \hline \text { Rabbit } & 38.5-39.5 \\ \hline \text { Pigeon } & 41.0-44.1 \\ \hline \text { Crow } & 40.0 \\ \hline \text { Chicken } & 41.7 \\ \hline \end{array}\)
21.
F = 2 C
\(\mathrm{F}=\frac{9}{5 \mathrm{C}\ +\ 32}\)
when we substract 9/5 C from both sides
\(2 \mathrm{C}-9 / 5 \mathrm{C}=32 \quad\left(2 \mathrm{C}=\frac{10}{5 \mathrm{C}}\right) \)
\(\frac{10}{5 \mathrm{C}}-\frac{9}{5 \mathrm{C}}=32\)
\(\frac{1}{5 C} =32 \)
\(\frac{1}{C} =32 \times 5 \)
\(C = 160^{\circ} \mathrm{C}\)
So, F = 2 C
\(\mathrm{F} =2 \times 160=320^{\circ} \mathrm{F}\)
7th Standard Syllabus & Materials
7th Standard
Tamilnadu 7th Standard Maths T2 - роЗропро▒рпНроХрогро┐родроорпН Important Questions And Answers Study Material - QB365 Set B
NEW7th Standard
Tamilnadu 7th Standard Maths T2 - роЗропро▒рпНроХрогро┐родроорпН Important Questions And Answers Study Material - QB365 Set A
NEW7th Standard
Tamilnadu 7th Standard Maths T2 - роЕро│ро╡рпИроХро│рпН Important Questions And Answers Study Material - QB365 Set C
NEW7th Standard
Tamilnadu 7th Standard Maths T2 - роЕро│ро╡рпИроХро│рпН Important Questions And Answers Study Material - QB365 Set B
Tamilnadu Stateboard 7th Standard Subjects
Tamilnadu Stateboard Standards