WGU D435 HR Technology and People Analytics
Comprehensive Study Guide V4 | OA Focused with
Full Questions and Answers | 2026 Update.
1. What is the chemical symbol for water?
A) Wa
B) H2O
C) W
D) HO2
Answer: B
Rationale: Water is composed of two hydrogen atoms and one oxygen atom,
hence the chemical formula H2O.
2. Which planet is known as the "Red Planet"?
A) Venus
B) Jupiter
C) Mars
D) Saturn
Answer: C
Rationale: Mars appears reddish due to the presence of iron oxide (rust) on its
surface.
3. Who wrote the Indian national anthem "Jana Gana Mana"?
A) Bankim Chandra Chatterjee
B) Rabindranath Tagore
C) Subhash Chandra Bose
D) Mahatma Gandhi
Answer: B
Rationale: Rabindranath Tagore composed "Jana Gana Mana," which was
adopted as India's national anthem in 1950.
,4. What is the largest organ in the human body?
A) Liver
B) Heart
C) Skin
D) Lungs
Answer: C
Rationale: Skin is the largest organ, covering the entire body, weighing about 8–
10 pounds in an average adult.
5. Which country has the largest population?
A) USA
B) India
C) China
D) Russia
Answer: B
Rationale: As of recent data, India has surpassed China to become the most
populous country in the world.
6. What is the square root of 144?
A) 10
B) 11
C) 12
D) 13
Answer: C
Rationale: 12 × 12 = 144, so the square root is 12.
7. Which gas is most abundant in the Earth's atmosphere?
A) Oxygen
B) Nitrogen
, C) Carbon Dioxide
D) Argon
Answer: B
Rationale: Nitrogen constitutes about 78% of Earth's atmosphere, followed by
oxygen at 21%.
8. In which year did India gain independence?
A) 1945
B) 1947
C) 1950
D) 1942
Answer: B
Rationale: India became independent from British rule on August 15, 1947.
9. What is the smallest continent by land area?
A) Africa
B) Australia
C) Europe
D) Antarctica
Answer: B
Rationale: Australia is the smallest continent, with an area of about 8.6 million sq
km.
10. Which vitamin is produced by sunlight?
A) Vitamin A
B) Vitamin B12
C) Vitamin C
D) Vitamin D
Answer: D
Rationale: The human body synthesizes Vitamin D upon exposure to ultraviolet B
(UVB) rays from sunlight.
Comprehensive Study Guide V4 | OA Focused with
Full Questions and Answers | 2026 Update.
1. What is the chemical symbol for water?
A) Wa
B) H2O
C) W
D) HO2
Answer: B
Rationale: Water is composed of two hydrogen atoms and one oxygen atom,
hence the chemical formula H2O.
2. Which planet is known as the "Red Planet"?
A) Venus
B) Jupiter
C) Mars
D) Saturn
Answer: C
Rationale: Mars appears reddish due to the presence of iron oxide (rust) on its
surface.
3. Who wrote the Indian national anthem "Jana Gana Mana"?
A) Bankim Chandra Chatterjee
B) Rabindranath Tagore
C) Subhash Chandra Bose
D) Mahatma Gandhi
Answer: B
Rationale: Rabindranath Tagore composed "Jana Gana Mana," which was
adopted as India's national anthem in 1950.
,4. What is the largest organ in the human body?
A) Liver
B) Heart
C) Skin
D) Lungs
Answer: C
Rationale: Skin is the largest organ, covering the entire body, weighing about 8–
10 pounds in an average adult.
5. Which country has the largest population?
A) USA
B) India
C) China
D) Russia
Answer: B
Rationale: As of recent data, India has surpassed China to become the most
populous country in the world.
6. What is the square root of 144?
A) 10
B) 11
C) 12
D) 13
Answer: C
Rationale: 12 × 12 = 144, so the square root is 12.
7. Which gas is most abundant in the Earth's atmosphere?
A) Oxygen
B) Nitrogen
, C) Carbon Dioxide
D) Argon
Answer: B
Rationale: Nitrogen constitutes about 78% of Earth's atmosphere, followed by
oxygen at 21%.
8. In which year did India gain independence?
A) 1945
B) 1947
C) 1950
D) 1942
Answer: B
Rationale: India became independent from British rule on August 15, 1947.
9. What is the smallest continent by land area?
A) Africa
B) Australia
C) Europe
D) Antarctica
Answer: B
Rationale: Australia is the smallest continent, with an area of about 8.6 million sq
km.
10. Which vitamin is produced by sunlight?
A) Vitamin A
B) Vitamin B12
C) Vitamin C
D) Vitamin D
Answer: D
Rationale: The human body synthesizes Vitamin D upon exposure to ultraviolet B
(UVB) rays from sunlight.
