Questions

Q:

A homogeneous mixture is also called

A) Compound B) Pure substance
C) Solution D) None of the above
 
Answer & Explanation Answer: C) Solution

Explanation:

A homogeneous mixture is also called as solution.

The term "solution" is more frequently used when a homogeneous mixture is a liquid, although it is sometimes used if the homogeneous mixture is a gas.

 

Another name for a solid homogeneous mixture of metals is an alloy.

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Q:

Which country has the oldest National Anthem?

A) India B) Denmark
C) Japan D) China
 
Answer & Explanation Answer: C) Japan

Explanation:

The Japanese national anthem, "Kimigayo", has the oldest lyrics, which were taken from a Heian period (794–1185) poem.

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Q:

Farsightedness is more properly called

A) Myopia B) Retinal detachment
C) Hyperopia D) Diabetes mellitus
 
Answer & Explanation Answer: C) Hyperopia

Explanation:

Farsightedness is more properly called Hyperopia.

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Q:

Analog computer works on the supply of

A) Magnetic strength B) Continuous electrical pulses
C) Discontinuous electrical pulses D) None of the above
 
Answer & Explanation Answer: B) Continuous electrical pulses

Explanation:

Analog_computer_works_on_the_supply_of1557395703.jpg image

An analog computer or analogue computer is a type of computer that uses the continuously changeable aspects of physical phenomena such as electrical, mechanical, or hydraulic quantities to model the problem being solved.

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Q:

Which of the following are involved directly in pulmonary circulation?

A) left ventricle, aorta, and inferior vena cava B) right atrium, aorta, and left ventricle
C) superior vena cava, right atrium, and left ventricle D) right ventricle, pulmonary artery, and left atrium
 
Answer & Explanation Answer: D) right ventricle, pulmonary artery, and left atrium

Explanation:

Right ventricle (which pumps blood to the lungs), pulmonary artery (which carries blood to the lungs), and left atrium (which receives blood from the lungs) are involved directly in pulmonary circulation.

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Q:

Which of these equations best summarizes photosynthesis?

A) CO2 + H2O -----> C6H12O6 + 6O2 B) 6O2 + 6H2O -----> C6H12O6 + 6CO2
C) 6CO2 + 6H2O -----> C6H12O6 + 6O2 D) C6H12O6 + 6O2 -----> CO2 + 6H2O
 
Answer & Explanation Answer: C) 6CO2 + 6H2O -----> C6H12O6 + 6O2

Explanation:

Here 6CO2 + 6H2O -----> C6H12O6 + 6O2 is the only option which best summarizes photosynthesis. We know that, photosynthesis is the reverse of cellular respiration in that carbon dioxide is used with water to form sugar, and oxygen is released.

 

Which_of_these_equations_best_summarizes_photosynthesis1553579499.png image

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Q:

Heat transfer by conduction occurs when molecules

A) Collide B) Combine
C) Heated D) None of the above
 
Answer & Explanation Answer: A) Collide

Explanation:

Conduction is the movement of heat through a substance by the collision of molecules. It occurs when two object at different temperatures are in contact with each other. Heat flows from the warmer to the cooler object until they are both at the same temperature.

Heat_transfer_by_conduction_occurs_when_molecules1560488148.jpg image

 

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Q:

STUFF and REPLACE are used to replace characters in a string

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

They both are used to replace characters in a string

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