Free Critical Thinking MCQs with Answers

435 Critical Thinking MCQs from Analytical and Logical Reasoning, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.

Critical thinking examines how conclusions follow from evidence, including claims, assumptions, arguments, inferences and relevant facts. Questions ask you to identify hidden assumptions, distinguish strong from weak evidence, assess cause and effect, recognise common reasoning errors, and decide which statement strengthens or weakens an argument.

Last updated

Read the Critical Thinking notesFree MDCAT chapter notes with key terms

435 questions · page 22 of 22

Moderate
  • A. Lion
  • B. Tiger
  • C. Cheetah
  • D. Leopard

Explanation: Lions, tigers and leopards can roar because they belong to the roaring-cat group. Cheetahs cannot roar and belong to a different cat genus.

Correct answer: Cheetah
Hard
  • A. Debit
  • B. Debt
  • C. Doubt
  • D. Subtle

Explanation: The letter b is silent in debt, doubt and subtle. In debit, the b is pronounced, so debit is the exception.

Correct answer: Debit
Hard
  • A. Unhappy
  • B. Unfair
  • C. Unsafe
  • D. Uncle

Explanation: In unhappy, unfair and unsafe, un- is a prefix meaning not. In uncle, the letters un are part of the root word, not that prefix.

Correct answer: Uncle
Very hard
  • A. Bread
  • B. Great
  • C. Head
  • D. Threat

Explanation: Bread, head and threat have the short e sound in their main vowel. Great has the long a sound, so its pronunciation is different.

Correct answer: Great
Very hard
  • A. Psychology
  • B. Pneumonia
  • C. Phone
  • D. Pterodactyl

Explanation: The initial p is silent in psychology, pneumonia and pterodactyl. In phone, the p is pronounced as part of the f sound.

Correct answer: Phone
Easy
  • A. Car
  • B. Bus
  • C. Train
  • D. Carrot

Explanation: Car, bus and train are all vehicles. Carrot is a vegetable, so it is the odd word out.

Correct answer: Carrot
Easy
  • A. Hammer
  • B. Saw
  • C. Pliers
  • D. Pillow

Explanation: A hammer, saw and pliers are hand tools used for practical work. A pillow is a household furnishing, not a tool.

Correct answer: Pillow
Fairly easy
  • A. Doctor
  • B. Lawyer
  • C. Pilot
  • D. Hospital

Explanation: Doctor, lawyer and pilot are names of professions. Hospital is a place or institution, not a profession.

Correct answer: Hospital
Fairly easy
  • A. January
  • B. March
  • C. July
  • D. September

Explanation: January, March and July each have 31 days. September has 30 days, making it the odd one out.

Correct answer: September
Moderate
  • A. Violin
  • B. Cello
  • C. Guitar
  • D. Trumpet

Explanation: Violin, cello and guitar are string instruments. Trumpet is a brass wind instrument, so it belongs to a different group.

Correct answer: Trumpet
Moderate
  • A. Square
  • B. Triangle
  • C. Rectangle
  • D. Sphere

Explanation: A square, triangle and rectangle are flat, two-dimensional shapes. A sphere is a solid, three-dimensional shape.

Correct answer: Sphere
Hard
  • A. Gold
  • B. Silver
  • C. Copper
  • D. Brass

Explanation: Gold, silver and copper are chemical elements. Brass is an alloy made by combining metals, so it is not an element.

Correct answer: Brass
Hard
  • A. Lahore
  • B. Karachi
  • C. Peshawar
  • D. Islamabad

Explanation: Lahore, Karachi and Peshawar are provincial capitals of Pakistan. Islamabad is the national capital and lies in a federal territory.

Correct answer: Islamabad
Very hard
  • A. Rose
  • B. Mango
  • C. Wheat
  • D. Neem

Explanation: Rose, mango and neem are woody plants with stems that persist above ground. Wheat is a herbaceous grass with a non-woody stem.

Correct answer: Wheat
Very hard
  • A. Mercury
  • B. Venus
  • C. Earth
  • D. Pluto

Explanation: Mercury, Venus and Earth are officially classified as planets. Pluto is classified as a dwarf planet, so it does not belong to the same…

Correct answer: Pluto