MAJOR ELEMENTS AND METALS
Major Elements and Metals
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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
مندرجہ ذیل میں سے کس کو اوڈومیٹر سے ماپا جاتا ہے؟
Pressure
Height
Distance
Velocity
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Explanation
An odometer measures distance traveled by a vehicle.
It tracks how far a vehicle has traveled over its lifetime or within a specific trip.
الیکٹران کے بہاؤ کو روکنے والے مواد کو کیا کہا جاتا ہے؟
Insulators
Super conductors
Conductors
Semi conductors
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Explanation
Materials that block the flow of electrons are called insulators .
They have high resistance and prevent electrical current from flowing through them.
Such as rubber or glass.
سلفر کی درجہ بندی کیا ہے؟
Metal
Non-metal
Metalloid
Alkali
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Explanation
Sulphur is a non-metal element.
It does not exhibit the characteristics of metals, such as conductivity, malleability, and ductility.
Instead, it is brittle and non-conductive.
غیر دھاتوں کے بارے میں کون سا بیان غلط ہے؟
Non-metal are gases
Non-metals have low melting and boiling point
Non-metals are solid at room temperature
Non-metal are poor conductor of heat and electricity
Non-metal are dull and soft
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Explanation
The incorrect statement about non-metals is: Non-metals are solid at room temperature.
Non-metals are typically :
Non-metal are gases Non-metals have low melting and boiling point Non-metal are poor conductor of heat and electricity Non-metal are dull and soft
توانائی کس ذریعے سے نہیں لی جاسکتی؟
Longitudinal progressive wave
Transverse progressive wave
Stationary Wave
Electromagnetic Wave
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Explanation
Stationary waves do not carry energy with them as it is s tationary or does not change position.
Stationary waves do not transfer energy from one place to another.
وہ مادہ جوکسی کے ذریعے برقی رو بہنے دیتا ہے کیا کہلاتا ہے۔
Insulators
Inductors
Conductors
None of these
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Explanation
Conductors
Ato ms of metallic elements are characterized by the presence of valence electrons, which are electrons in the outer shell of free-moving atoms. It is these " "free electrons" that allow the metal to conduct electricity .
سب سے زیادہ پرچر قدرتی آئرن آکسائڈ ہیں
Magnetite and Pyrite
Magnetite and Bauxite
Hematite and Pyrite
Hematite and Magnetite
Hematite and Bauxite
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Explanation
Iron oxide is a chemical compound of oxygen and iron and is most commonly found in the earth's crust in the
form of hematite (Fe2O3). It also exists in the form of
magnetite (Fe3O4).
سمندر کے پانی میں سب سے زیادہ پرچر عناصرکون سے ہیں
Sodium and Potassium
Sodium and Calcium
Sodium and Chlorine
Chlorine and lodine
Magnesium and Sulphur
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Explanation
The salt content in seawater is mainly due to the presence of sodium chloride i.e sodium and chlorine. The abundant element in seawater is chloride, which accounts for 1.94% of the total composition.
Chloride is followed by 1.08% sodium, 0 .04% potassium and a small amount of iodine.
Carbon
Nitrogen
Oxygen
None of these
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Explanation
nitrogen
Therefore, the majority of the atmosphere is nitrogen, which accounts for 78% .
اسٹیل کا پن پانی میں ڈوب جاتا ہے جبکہ ایک بہت بڑا جہاز تیرتا ہے، کیونکہ پٹ
displaces more water than its weight
displace more water than its length
Both A and B
None Of these
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Explanation
A piece of steel sinks in water because steel is denser than water. However, a steel ship is a hollow object made of steel and contains a lot of air in it.
Due to presence of a lot of air in it, the average density of the ship becomes less than the density of wate r. Hence a ship floats in water.
