Convert the following temperatures to the Celsius scale.
(a) 293 K
(b) 470 K
(a) 293 K
(b) 470 K
Solution and Explanation
In order to covert temperature from Kelvin to Celsius scale, we have to subtract 273 from the given value because K - 273 = °C
(a) 293 K - 273 = 20°C
(b) 470K - 273 = 197°C
Top CBSE Class IX Science Questions
- How do good animal husbandry practices benefit farmers?
- CBSE Class IX
- Science
- Animal Husbandry
- Convert the following temperatures to the Celsius scale.
(a) 293 K
(b) 470 K- CBSE Class IX
- Science
- Can Matter Change its State?
- Give reason for the following observations.
(a) Naphthalene balls disappear with time without leaving any solid.
(b) We can get the smell of perfume sitting several metres away.- CBSE Class IX
- Science
- Physical Nature of Matter
- Arrange the following substances in increasing order of forces of attraction between the particles— water, sugar, oxygen.
- CBSE Class IX
- Science
- Can Matter Change its State?
- What is the physical state of water at—
(a) 25°C
(b) 0°C
(c) 100°C ?- CBSE Class IX
- Science
- Can Matter Change its State?
Top CBSE Class IX Can Matter Change its State? Questions
- Convert the following temperatures to the Celsius scale.
(a) 293 K
(b) 470 K- CBSE Class IX
- Science
- Can Matter Change its State?
- Arrange the following substances in increasing order of forces of attraction between the particles— water, sugar, oxygen.
- CBSE Class IX
- Science
- Can Matter Change its State?
- What is the physical state of water at—
(a) 25°C
(b) 0°C
(c) 100°C ?- CBSE Class IX
- Science
- Can Matter Change its State?
- Give two reasons to justify—
(a) Water at room temperature is a liquid.
(b) An iron almirah is a solid at room temperature.- CBSE Class IX
- Science
- Can Matter Change its State?
- Why is ice at 273K more effective in cooling than water at the same temperature?
- CBSE Class IX
- Science
- Can Matter Change its State?
Top CBSE Class IX Questions
- The radius of a spherical balloon increases from 7 cm to 14 cm as air is being pumped into it. Find the ratio of surface areas of the balloon in the two cases.
- CBSE Class IX
- Surface Area of a Sphere
(Street Plan) : A city has two main roads which cross each other at the centre of the city. These two roads are along the North-South direction and East-West direction.
All the other streets of the city run parallel to these roads and are 200 m apart. There are 5 streets in each direction. Using 1cm = 200 m, draw a model of the city on your notebook. Represent the roads/streets by single lines. There are many cross- streets in your model. A particular cross-street is made by two streets, one running in the North - South direction and another in the East - West direction. Each cross street is referred to in the following manner : If the 2nd street running in the North - South direction and 5th in the East - West direction meet at some crossing, then we will call this cross-street (2, 5). Using this convention, find:
(i) how many cross - streets can be referred to as (4, 3).
(ii) how many cross - streets can be referred to as (3, 4).
- CBSE Class IX
- Coordinate Geometry
- What are the main features of the mechanical teachers and the schoolrooms that Margie and Tommy have in the story?
- CBSE Class IX
- The fun they had
- “They can’t hang me twice.”
(i) Who says this?
(ii) Why does the speaker say it?- CBSE Class IX
- If I were you
- How do good animal husbandry practices benefit farmers?
- CBSE Class IX
- Animal Husbandry