Explanation

The transformer work only on an AC supply

because A transformer needs an alternating current that will create a changing magnetic field

note:

The transformer does not work on DC.

Direct current doesn't have a variable magnetic field

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ND17-1-2023

Explanation

Oxygen is the most abundant element contained within living organisms

Oxygen composes about 65% of the whole-body mass

while 

Calcium is the most abundant mineral in the human body,

calcium makes up 1.5 to 2% of the total body weight.

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ND17-1-2023

Explanation

tungsten is also among the heaviest metals.

Its electrical conductivity at 0 °C is about 28% of that of silver which itself has the highest conductivity of all metals.

Tungsten has the chemical symbol W

and is element 74 of the periodic table.

while 

Silver is the first-best conductor of heat.

Copper is the second-best conductor of heat.****

ND10-1-2023

Explanation

Explanation

Wet oxidation is a form of hydrothermal treatment. It is the oxidation of dissolved or suspended components in water using oxygen as the oxidizer.

AGM 25-12-2022

Explanation

If the Radius of curvature of a concave mirror is 60 cm, what is its focal length is  30 cm.

The Formula for the Radius of Curvature R= 1/K.

AGM 25-12-2022

Explanation

The extraction of metals and their isolation occurs over a few major steps:

وہ اقدامات دھاتوں کو نکالنے کے لیے استعمال کیے جاتے ہیں۔

Concentration of Ore – Here the ore is separated from earthy impurities.

Isolation of metal from concentrated Ore – Here the ore is converted to its oxide form and then reduced. The steps involved are either calcination or roasting and then heating with a reducing agent.

Purification of the metal – Here the metal is purified for practical purposes.

Explanation

The position of an element in the periodic table is determined by its atomic number, which is the number of protons in the nucleus of an atom.

Atomic Number = Number of Protons

The periodic table is arranged in order of increasing atomic number.

Each element has a unique number of protons, which defines what element it is.

Explanation

Acid salts are a class of salts that produce an acidic solution after being dissolved in a solven

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RY 23-12-2022

Explanation

 Acetic acid contains two carbon atoms, four hydrogen atoms, and two oxygen atoms.

Acetic acid systematically named ethanoic acid.

Acetic acid is an organic compound with the formula CH3COOH.

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RY 23-12-2022