A) Okun’s law
B) Phillips curve
C) Say’s law
D) U-shape curve
Answer: B) Phillips curve
Category: SCIENCE MCQS
Which branch of chemistry deals with carbon compounds?
A) Physical chemistry
B) Inorganic chemistry
C) Organic chemistry
D) Analytical chemistry
➡️ Answer: C
Dry ice is the solid form of:
A) Nitrogen
B) Oxygen
C) Carbon dioxide
D) Water
➡️ Answer: C
Which of the following has the highest electronegativity?
A) Fluorine
B) Oxygen
C) Nitrogen
D) Chlorine
➡️ Answer: A
The atomic number of Oxygen is:
A) 6
B) 7
C) 8
D) 9
➡️ Answer: C
The Heaviest naturally occurring element is:
A) Uranium
B) Thorium
C) Plutonium
D) Radium
Answer: A) Uranium
What is the approximate percentage of oxygen in Earth’s atmosphere?
A) 12%
B) 18%
C) 21%
D) 25%
Answer: C) 21%
Which chemical is responsible for ozone layer depletion?
A) Carbon dioxide
B) Methane
C) Chlorofluorocarbons (CFCs)
D) Nitrogen oxides
Answer: C) CFCs
The chemical used to preserve biological specimens is:
A) Formaldehyde
B) Chloroform
C) Acetone
D) Benzene
Answer: A) Formaldehyde
Which vitamin is essential for the synthesis of clotting factors in liver?
A) Vitamin A
B) Vitamin D
C) Vitamin E
D) Vitamin K
Answer: D) Vitamin K