81. What is the largest planet in our solar system?
A: Earth
B: Jupiter
C: Venus
D: Saturn
82. Who was the first person to walk on the Moon?
A: Neil Armstrong
B: Buzz Aldrin
C: Alan Shepard
D: John Glenn
83. What is the chemical symbol for lead?
A: Pb
B: Ld
C: Le
D: Pl
84. Which country is famous for the ancient city of Petra?
A: Egypt
B: Jordan
C: Greece
D: Italy
85. What is the chemical symbol for helium?
A: He
B: Hl
C: Hy
D: Hm
86. Which gas is responsible for the color of the Earth’s sky?
A: Oxygen
B: Nitrogen
C: Hydrogen
D: Oxygen
87. What is the chemical symbol for potassium?
A: Pt
B: K
C: Po
D: Ka
88. Who is the author of the novel “Pride and Prejudice”?
A: Jane Austen
B: Charlotte Brontë
C: Emily Brontë
D: Charles Dickens
89. Which gas gives the distinct smell to rotten eggs?
A: Oxygen
B: Hydrogen
C: Sulfur Dioxide
D: Methane
90. Who is the author of the play “Romeo and Juliet”?
A: William Shakespeare
B: Charles Dickens
C: Jane Austen
D: George Orwell
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