A) Heart
B) Skin
C) Liver
D) Brain
Answer: B) Skin
Tag: science objective questions
The hardest natural substance on Earth is:
A) Iron
B) Diamond
C) Gold
D) Silver
Answer: B) Diamond
The fastest animal on land is:
A) Lion
B) Tiger
C) Cheetah
D) Horse
Answer: C) Cheetah
The planet known as the “Red Planet” is:
A) Earth
B) Mars
C) Jupiter
D) Venus
Answer: B) Mars
The chemical symbol for water is:
A) H₂
B) HO₂
C) H₂O
D) O₂H
Answer: C) H₂O
Oxidation is a
(A) loss of oxygen
(B) gain of hydrogen
(C) gain of electron
(D) loss of electron
The answer is: (D) loss of electron
The Central Nervous System (CNS) consists of
(A) brain, heart and kidneys
(B) brain, heart and spinal cord
(C) brain and heart
(D) brain and spinal cord
The answer is: (D) brain and spinal cord
What play the most important role in regulating temperature and determining climate on the Earth?
(A) Oceans
(B) Mountains
(C) Deserts
(D) Forests
The answer is: (A) Oceans
Earth’s oceans play the most important role in regulating temperature and determining climate on the planet.
Which part of the donor’s eye is utilized in eye donation?
(A) Cornea
(B) Lens
(C) Retina
(D) None of these
The answer is: (A) Cornea
Which of the following is a water-soluble vitamin?
(A) Vitamin A
(B) Vitamin C
(C) Vitamin D
(D) Vitamin K
The answer is: (B) Vitamin C