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

All important questions and Information Related to 'Photosynthesis"

Photosynthesis takes place in presence of the following light Only in sunlight from the sun

Photosynthesis takes place faster in white light

Photosynthesis occurs more in blue and red light rays

Photosynthesis occurs more in blue and red light rays and less, or not at all, in green light rays.

Green Light light is more important for photosynthesis.

As compared to photosynthesis, glucose is chiefly decomposed during Respiration

At the time of a Solar Eclipse, the rate of photosynthesis will: Decrease

In all plants, the major sites of photosynthesis are Leaves

In Photosynthesis reduction occurs in the Water

At night, when photosynthesis is stopped, plants Give off Carbon Dioxide.

Photosynthesis pigments are organized into clusters called thylakoid

The process of photosynthesis produces glucose and carbon dioxide

ND2-03-2023

Explanation

It is a highly unstable isotope of hydrogen.

Hydrogen has no neutron.

It contain only one proton and one electron.

But the deuterium contain one neutron and tritium contain two neurons,

these are the isotopes of hydrogen.

Explanation

Straw, camphor, alcohol, petrol, diesel etc. catch fire easily to release heat energy and light energy.

So, these are examples of combustible substances.

Explanation

Explanation

The air in Earth's atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen.

Explanation

The most abundant naturally occurring gas is nitrogen (N2), which makes up about 78% of air.

Oxygen (O2) is the second most abundant gas at about 21%.

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

Explanation

Oxyacetylene welding, commonly referred to as gas welding,

is a process which relies on combustion of oxygen and acetylene

Explanation

Infrared radiation is strongly absorbed by water and by the atmosphere.

Although invisible to the eye, infrared radiation can be detected as warmth by the skin.

Nearly 50 percent of the Sun's radiant energy is emitted in the infrared region of the electromagnetic spectrum, with the rest primarily in the visible region.

Explanation

• Uranium deposits are found in Dera Ghazi Khan of Punjab
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• The uranium mill was also established in Pakistan in 1977-78.
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• Kazakhstan is the biggest producer of Uranium in the world