Explanation

-196 degrees C is the temperature of liquid nitrogen.

Nitrogen is a gas at room temperature.

Liquid nitrogen has a boiling point at O = -196°C approximately, at atmospheric pressure.

 It is a colourless, mobile liquid whose viscosity is about one-tenth that of acetone.

Liquid nitrogen is widely used as a coolant.

Explanation

Nanocomposite materials have been used in active packaging to prevent the passage of oxygen, carbon dioxide, and moisture into the food.

Nanomaterials must be used with caution because they have the potential to cause toxic effects.

Explanation

The warming of the Earth is largely the result of emissions of carbon dioxide (CO2) and other greenhouse gases from human activities.

These activities include burning fossil fuels, such as coal and oil.

Changes in land use, such as agriculture and deforestation.

Explanation

In gases, heat transfers mainly by convection.

Convection is the process of heat transfer by the actual movement of medium particles.

To some extent, gases also transfer heat by conduction when they are in static conditions.

Explanation

The inert gas argon (Ar) is the third most abundant gas at 0.93%.

The atomic number of argon is 18 and the symbol is Ar.

It is the third most abundant gas in the earth's atmosphere.

Noble gases

1 Helium (He) 2

2 Neon (Ne) 10

3 Argon (Ar) 18

4 Krypton (Kr) 36

Explanation

Boiling point of Sulfur is 444.7°C.

Melting point of Sulfur is 112.8°C.

Explanation

• Thermometer is used to measure  the temperature
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• Temperature measurement (also known as thermometry) describes the process of measuring a current local temperature for immediate or later evaluation. 
• In a mercury thermometer, a glass tube is filled with mercury and a standard temperature scale is marked on the tube.
• Mercury is used in thermometers because It has a high coefficient of expansion so that even a small rise in temperature 
• Galileo Galilei is claimed to be the inventor of the thermometer in 1714.
• Water freezes at 32 F and boils at 212 F
• SH6-9-2023

Explanation

Thermal energy  is produced when a rise in temperature causes atoms and molecules to move faster and collide with each other. 

Explanation

• The largest component of natural gas is methane
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• Natural Gas is also known as Methane.
• The principal use of methane is as a fuel.
• Natural gas also contains smaller amounts of natural gas liquids (NGLs, which are also hydrocarbon gas liquids)
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• Largest natural gas producer country in the world Russia
•  Russia is home to the world's largest natural gas reserves, with a total proved resource of 38 TCM

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Explanation

• Methane is the main component of CNG 
• CNG stands for Compressed Natural Gas