Measurements & Scientific Instruments

Correct Answer: C

Coulumb discovered the law of attraction and repulsion in electric charges. The effect results from the movement of charge or the interaction of electric and magnetic fields.

Correct Answer: A

Copernicus discovered the Solar system. Historical scientific accounts credit this person, place, or event with the development described.

Correct Answer: B

Johannes Kepler enunciated the laws of planetary motion. Astronomical observations and measurements establish this relationship among the relevant celestial bodies.

Correct Answer: C

Felix Hoffmann invented Aspirin” in 1897. Historical scientific accounts credit this person, place, or event with the development described.

Correct Answer: B

Robert Fluton invented steamboat. Historical scientific accounts credit this person, place, or event with the development described.

Correct Answer: A

Aristotle considered the founder of meteorology. This description follows from the defining characteristics and established facts associated with the subject.

Correct Answer: A

Copernicus the founder of solar system. This description follows from the defining characteristics and established facts associated with the subject.

Correct Answer: B

Einstein said that light is made of corpuscles/particles. The result follows from how light is reflected, refracted, focused, or distributed across the electromagnetic spectrum.

Correct Answer: D

A light-year is a unit of distance, not time: it is the distance light travels in one year in vacuum. It is used in astronomy to describe very large distances between stars and galaxies.

Correct Answer: D

Pressure is measured in pascals in the SI system. One pascal equals one newton of force acting on one square metre of area, so it is a derived unit based on force and area.

Correct Answer: B

Copernicus is the person or title historically associated with this fact. Such biographical MCQs test a specific contribution, office, work or distinction, so the explanation should connect the person with the achievement or role named in the question.

Correct Answer: B

Priestly is the correct answer because it matches the fact or concept tested by this question.

Correct Answer: B

Albert Einsteinm is the relevant answer because it is directly tied to the fact, definition or concept named in the stem. For study purposes, focus on the relationship between the stem and the selected term, date, place or person so the item is learned as knowledge rather than memorised as a letter choice.

Correct Answer: B

Laws of motion and law of Gravitation is the relevant answer because it is directly tied to the fact, definition or concept named in the stem. For study purposes, focus on the relationship between the stem and the selected term, date, place or person so the item is learned as knowledge rather than memorised as a letter choice.

Correct Answer: A

Napiform is the relevant answer because it is directly tied to the fact, definition or concept named in the stem. For study purposes, focus on the relationship between the stem and the selected term, date, place or person so the item is learned as knowledge rather than memorised as a letter choice.

Correct Answer: A

Charles Darwin is the relevant answer because it is directly tied to the fact, definition or concept named in the stem. For study purposes, focus on the relationship between the stem and the selected term, date, place or person so the item is learned as knowledge rather than memorised as a letter choice.

Correct Answer: C

Newton' third law of motion is the person or title historically associated with this fact. Such biographical MCQs test a specific contribution, office, work or distinction, so the explanation should connect the person with the achievement or role named in the question.

Correct Answer: D

Berner Lee is the relevant answer because it is directly tied to the fact, definition or concept named in the stem. For study purposes, focus on the relationship between the stem and the selected term, date, place or person so the item is learned as knowledge rather than memorised as a letter choice.

Correct Answer: A

James Watt significantly improved and is widely credited with inventing the practical steam engine.

Correct Answer: B

Nicolaus Copernicus proposed the heliocentric (Sun-centered) model of the solar system.