MCQs

Explanation
In August 2021 , China inaugurated a new trade route via ship, road, and rail through Myanmar **** On 3 1 August 2021, China successfully trialed a   cargo run from Myanmar's Yangon Port all the way to China's Yunnan Province. China is closing in on India after e stablishing ports at Gwadar in Pakistan , Hambantota and Colombo in Sri Lanka and soon it will have access to the Indian Ocean from ports in Myanmar . SH26-8-2023

Explanation
Tokyo Olympics are scheduled to be held from   July 23, 2021 *** The Tokyo Olympics are expected to host around 10,000 athletes. *** Haider Ali won the  first-ever Gold  Medal  for Pakistan In  Paralympics 2020. Pakistani athlete Haider Ali belongs to  Gujranwala city . *** Belgium won men’s  hockey gold in Tokyo Olympics, in 2021 The Netherlands won women’s  hockey gold in Tokyo Olympics, in 2021 **** Summer Olympic medal count 2021 Pos. Country Gold Silver Bronze Total 1 United States 39 41 33 113 2 China 38 32 18 88 3 Japan 27 14 17 58 4 Great Britain 22 21 22 65 5 ROC 20 28 23 71 6 Australia 17 7 22 46 7 Netherlands 10 12 14 36 8 France 10 12 11 33 9 Germany 10 11 16 37 10 Italy 10 10 20 40 11 Canada 7 6 11 24 12 Brazil 7 6 8 21 13 New Zealand 7 6 7 20 14 Cuba 7 3 5 15 15 Hungary 6 7 7 20

Explanation
Total students = 52 No. boys = 25 No. girls = 27 Total weight of boys = 42 X 25 = 1050 Total weight of 52 students = 52 X 40 = 2080 Total weight of girls = 2080 - 1050 = 1030 Average weight of girls = 1030 / 27 = 38.15 Kgs sh25-8-2023

Explanation
The core principle behind a hydrogen bomb is the fusion of light atomic nuclei. Specifically isotopes of hydrogen ( deuterium and tritium ), under extremely high temperatures and pressures. 

Explanation
Milk is a mixture, not a compound — it contains water, fats, proteins, etc., physically combined. Chalk (CaCO₃), Ammonia (NH₃), and Table Salt (NaCl) are pure compounds with fixed chemical formulas.

Explanation
Calcium belongs to Group 2 of the periodic table, known as alkaline earth metals. These metals are shiny , somewhat reactive , and include beryllium, magnesium, calcium, strontium, barium, and radium.

Explanation
Tin has the lowest melting point (~232°C) among. Zinc (~419°C) Gold (~1064°C) Lead (~327°C)

Explanation
The Sun's energy comes from nuclear fusion , where hydrogen nuclei fuse to form helium , releasing enormous energy. This process occurs in the Sun’s core under extreme temperature and pressure , following the proton-proton chain reaction.

Explanation
Momentum is given by the formula: p = mv, where m is mass and v is velocity (or speed). It depends on mass and speed , not on acceleration, so momentum is independent of acceleration.

Explanation
When a car moves at constant velocity, it means there is no acceleration . According to Newton’s First Law , if there’s no acceleration , the net force acting on the object is zero .

Explanation
In uniform circular motion , instantaneous velocity is tangent to the circular path. Instantaneous acceleration (centripetal) is directed toward the center, making the two vectors perpendicular to each other .

Explanation
Acceleration is directly caused by a net force acting on an object . It always occurs in the same direction as the net (unbalanced) force applied.

Explanation
Centripetal force acts perpendicular to the direction of motion, so it does no work. Work = Force × Displacement × cos(θ) ; since θ = 90°, cos(90°) = 0, so Work = 0.

Explanation
The core principle behind a hydrogen bomb is the fusion of light atomic nuclei. Specifically isotopes of hydrogen ( deuterium and tritium ), under extremely high temperatures and pressures. 

Explanation
Milk is a mixture, not a compound — it contains water, fats, proteins, etc., physically combined. Chalk (CaCO₃), Ammonia (NH₃), and Table Salt (NaCl) are pure compounds with fixed chemical formulas.

Explanation
Calcium belongs to Group 2 of the periodic table, known as alkaline earth metals. These metals are shiny , somewhat reactive , and include beryllium, magnesium, calcium, strontium, barium, and radium.

Explanation
Tin has the lowest melting point (~232°C) among. Zinc (~419°C) Gold (~1064°C) Lead (~327°C)

Explanation
The Sun's energy comes from nuclear fusion , where hydrogen nuclei fuse to form helium , releasing enormous energy. This process occurs in the Sun’s core under extreme temperature and pressure , following the proton-proton chain reaction.

Explanation
Momentum is given by the formula: p = mv, where m is mass and v is velocity (or speed). It depends on mass and speed , not on acceleration, so momentum is independent of acceleration.

Explanation
When a car moves at constant velocity, it means there is no acceleration . According to Newton’s First Law , if there’s no acceleration , the net force acting on the object is zero .

Explanation
In uniform circular motion , instantaneous velocity is tangent to the circular path. Instantaneous acceleration (centripetal) is directed toward the center, making the two vectors perpendicular to each other .

Explanation
Acceleration is directly caused by a net force acting on an object . It always occurs in the same direction as the net (unbalanced) force applied.

Explanation
Centripetal force acts perpendicular to the direction of motion, so it does no work. Work = Force × Displacement × cos(θ) ; since θ = 90°, cos(90°) = 0, so Work = 0.

Explanation
The core principle behind a hydrogen bomb is the fusion of light atomic nuclei. Specifically isotopes of hydrogen ( deuterium and tritium ), under extremely high temperatures and pressures. 

Explanation
Milk is a mixture, not a compound — it contains water, fats, proteins, etc., physically combined. Chalk (CaCO₃), Ammonia (NH₃), and Table Salt (NaCl) are pure compounds with fixed chemical formulas.

Explanation
Calcium belongs to Group 2 of the periodic table, known as alkaline earth metals. These metals are shiny , somewhat reactive , and include beryllium, magnesium, calcium, strontium, barium, and radium.

Explanation
Tin has the lowest melting point (~232°C) among. Zinc (~419°C) Gold (~1064°C) Lead (~327°C)

Explanation
The Sun's energy comes from nuclear fusion , where hydrogen nuclei fuse to form helium , releasing enormous energy. This process occurs in the Sun’s core under extreme temperature and pressure , following the proton-proton chain reaction.

Explanation
Momentum is given by the formula: p = mv, where m is mass and v is velocity (or speed). It depends on mass and speed , not on acceleration, so momentum is independent of acceleration.

Explanation
When a car moves at constant velocity, it means there is no acceleration . According to Newton’s First Law , if there’s no acceleration , the net force acting on the object is zero .

Explanation
In uniform circular motion , instantaneous velocity is tangent to the circular path. Instantaneous acceleration (centripetal) is directed toward the center, making the two vectors perpendicular to each other .

Explanation
Acceleration is directly caused by a net force acting on an object . It always occurs in the same direction as the net (unbalanced) force applied.

Explanation
Centripetal force acts perpendicular to the direction of motion, so it does no work. Work = Force × Displacement × cos(θ) ; since θ = 90°, cos(90°) = 0, so Work = 0.

Explanation
The core principle behind a hydrogen bomb is the fusion of light atomic nuclei. Specifically isotopes of hydrogen ( deuterium and tritium ), under extremely high temperatures and pressures. 

Explanation
Milk is a mixture, not a compound — it contains water, fats, proteins, etc., physically combined. Chalk (CaCO₃), Ammonia (NH₃), and Table Salt (NaCl) are pure compounds with fixed chemical formulas.

Explanation
Calcium belongs to Group 2 of the periodic table, known as alkaline earth metals. These metals are shiny , somewhat reactive , and include beryllium, magnesium, calcium, strontium, barium, and radium.

Explanation
Tin has the lowest melting point (~232°C) among. Zinc (~419°C) Gold (~1064°C) Lead (~327°C)

Explanation
The Sun's energy comes from nuclear fusion , where hydrogen nuclei fuse to form helium , releasing enormous energy. This process occurs in the Sun’s core under extreme temperature and pressure , following the proton-proton chain reaction.

Explanation
Momentum is given by the formula: p = mv, where m is mass and v is velocity (or speed). It depends on mass and speed , not on acceleration, so momentum is independent of acceleration.

Explanation
When a car moves at constant velocity, it means there is no acceleration . According to Newton’s First Law , if there’s no acceleration , the net force acting on the object is zero .

Explanation
In uniform circular motion , instantaneous velocity is tangent to the circular path. Instantaneous acceleration (centripetal) is directed toward the center, making the two vectors perpendicular to each other .

Explanation
Acceleration is directly caused by a net force acting on an object . It always occurs in the same direction as the net (unbalanced) force applied.

Explanation
Centripetal force acts perpendicular to the direction of motion, so it does no work. Work = Force × Displacement × cos(θ) ; since θ = 90°, cos(90°) = 0, so Work = 0.

Explanation
The core principle behind a hydrogen bomb is the fusion of light atomic nuclei. Specifically isotopes of hydrogen ( deuterium and tritium ), under extremely high temperatures and pressures.

Explanation
Milk is a mixture, not a compound — it contains water, fats, proteins, etc., physically combined. Chalk (CaCO₃), Ammonia (NH₃), and Table Salt (NaCl) are pure compounds with fixed chemical formulas.

Explanation
Calcium belongs to Group 2 of the periodic table, known as alkaline earth metals. These metals are shiny , somewhat reactive , and include beryllium, magnesium, calcium, strontium, barium, and radium.