Covering Practice Exam (Questions &
Answers) Verified 100% Correct!!
1. Which of the following is a renewable energy source?
A) Coal
B) Natural gas
C) Solar power
D) Uranium-235
Answer: C
Explanation: Solar power is renewable because it is derived from the sun, which will
continue to emit energy for billions of years. Coal, natural gas, and uranium are finite
resources that take millions of years to form and are consumed faster than they are
created.
2. What is the main function of red blood cells?
A) Fight infection
B) Carry oxygen
C) Clot blood
D) Produce antibodies
Answer: B
Explanation: Red blood cells contain hemoglobin, which binds to oxygen in the lungs
and releases it in tissues. White blood cells fight infection, platelets help clot blood, and
antibodies are produced by plasma cells.
3. In geometry, what is the sum of the interior angles of a triangle?
A) 90°
,B) 180°
C) 270°
D) 360°
Answer: B
Explanation: Euclidean geometry states that the three interior angles of any triangle
always sum to 180°. This can be proven by drawing a line parallel to one side through
the opposite vertex.
4. Which planet is known as the "Red Planet"?
A) Jupiter
B) Saturn
C) Mars
D) Venus
Answer: C
Explanation: Mars appears reddish due to iron oxide (rust) on its surface. Jupiter is
known for its Great Red Spot (a storm), Saturn for its rings, and Venus for its thick, toxic
atmosphere.
5. What is the chemical symbol for gold?
A) Go
B) Gd
C) Au
D) Ag
Answer: C
Explanation: Au comes from the Latin word aurum, meaning gold. Ag is silver, Gd is
gadolinium, and Go is not a valid element symbol.
6. Which of the following is an example of a mammal?
A) Penguin
B) Shark
,C) Dolphin
D) Lizard
Answer: C
Explanation: Dolphins are marine mammals; they breathe air, give live birth, and produce
milk. Penguins are birds, sharks are fish, and lizards are reptiles.
7. Who wrote "Romeo and Juliet"?
A) Charles Dickens
B) Mark Twain
C) William Shakespeare
D) Jane Austen
Answer: C
Explanation: William Shakespeare wrote "Romeo and Juliet" in the late 16th century.
Dickens wrote "A Tale of Two Cities," Twain wrote "Adventures of Huckleberry Finn," and
Austen wrote "Pride and Prejudice."
8. If you double the speed of a car, its kinetic energy becomes:
A) The same
B) Twice as much
C) Four times as much
D) Half as much
Answer: C
Explanation: Kinetic energy = ½mv². If v doubles, v² quadruples, so KE quadruples. This
is why high-speed collisions are much more dangerous.
9. What is the largest organ in the human body?
A) Heart
B) Liver
C) Skin
D) Lungs
, Answer: C
Explanation: The skin is the largest organ by surface area and weight (about 8 pounds in
an adult). The liver is the largest internal organ.
10. Which of these is a prime number?
A) 21
B) 33
C) 47
D) 49
Answer: C
Explanation: 47 is only divisible by 1 and itself. 21 = 3×7, 33 = 3×11, 49 = 7×7.
11. The pH scale measures:
A) Temperature
B) Acidity or alkalinity
C) Pressure
D) Density
Answer: B
Explanation: pH (potential of hydrogen) ranges from 0 (very acidic) to 14 (very alkaline).
Pure water is pH 7, neutral.
12. Who painted the Mona Lisa?
A) Vincent van Gogh
B) Pablo Picasso
C) Leonardo da Vinci
D) Michelangelo
Answer: C
Explanation: Leonardo da Vinci painted the Mona Lisa in the early 1500s. It is famous for
the subject’s enigmatic expression and sfumato technique.