A) Vitamin A
B) Vitamin D
C) Vitamin K
D) Vitamin B12
Answer: B) Vitamin D
Author: Shumaim Naeem
Blood’s red color is due to:
A) Plasma
B) Hemoglobin
C) Platelets
D) Myoglobin
Answer: B) Hemoglobin
Which element is liquid at room temperature?
A) Sodium
B) Mercury
C) Zinc
D) Iron
Answer: B) Mercury
Acid found in lemons:
A) Acetic acid
B) Citric acid
C) Hydrochloric acid
D) Tartaric acid
Answer: B) Citric acid
The gas used in soft drinks is:
A) Oxygen
B) Hydrogen
C) Carbon dioxide
D) Nitrogen
Answer: C) Carbon dioxide
Speed of light in vacuum is approximately:
A) 3 × 10⁵ m/s
B) 3 × 10⁸ m/s
C) 3 × 10⁶ m/s
D) 3 × 10³ m/s
Answer: B) 3 × 10⁸ m/s
Which planet has the highest number of moons?
A) Saturn
B) Jupiter
C) Mars
D) Uranus
Answer: A) Saturn (recent data)
Which device is used to measure atmospheric pressure?
A) Thermometer
B) Barometer
C) Hygrometer
D) Altimeter
Answer: B) Barometer
The ozone layer is found in which part of the atmosphere?
A) Troposphere
B) Stratosphere
C) Mesosphere
D) Exosphere
Answer: B) Stratosphere
Who is the President of the World Bank in 2025?
A) Ajay Banga
B) David Malpass
C) Kristalina Georgieva
D) Janet Yellen
Answer: A) Ajay Banga