Question : In early 1610, who discovered with his newly invented telescope that Jupiter has four moons?
Option 1: Simon Marius
Option 2: Tycho Brahe
Option 3: Galileo Galilei
Option 4: Johannes Kepler
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Correct Answer: Galileo Galilei
Solution : The correct answer is Galileo Galilei.
In early 1610, Galileo Galilei discovered that Jupiter has four moons using his newly invented telescope. These moons are now known as the Galilean moons. In 1609, Galileo constructed his first telescope, which was a simple refracting telescope. His telescope consisted of a convex objective lens and a concave eyepiece lens.
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Question : In 1664, who discovered the fifth star in the Trapezium, an asterism (mini-constellation) in the constellation Orion?
Option 1: George Willis Ritchey
Option 2: Giordano Bruno
Option 3: Johannes Kepler
Option 4: Robert Hooke
Question : Who was the first to accurately describe the rings of Saturn as a disc around the planet in 1655?
Option 1: Hideki Yukawa
Option 2: Galileo Galilei
Option 3: Christiaan Huygens
Option 4: Giovanni Domenico Cassini
Question : In the early 1800s, who discovered that each chemical element is made up of a unique type of atom and that atoms differ by their mass?
Option 1: Antoine Lavoisier
Option 2: John Dalton
Option 3: Amedeo Avogadro
Option 4: Robert Boyle
Question : The following sentence has been split into four segments.Identify the segment that contains a grammatical error.
Binay said that / he is coming / from / his village, Jaygarh.
Option 1: from
Option 2: he is coming
Option 3: his village, Jaygarh
Option 4: Binay said that
Question : Select the option that expresses the given sentence in passive voice.
The Mesopotamians invented the decimal system.
Option 1: The decimal system was invented by the Mesopotamians.
Option 2: The decimal system is invented by the Mesopotamians.
Option 3: The decimal system is an invention of the Mesopotamians.
Option 4: The decimal system has been invented by the Mesopotamians.
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