IQ questions would be found on IQ tests. These questions are intended to assess a variety of mental abilities and skills, and therefore cover a wide range of different types of intelligence. Below are some general examples of the types of questions that might be found on an IQ test:

Analogies (mathematical and verbal)
Pattern driven (spatial and mathematical)
Classification
Visual
Spatial
Logical
While those are the general areas that an IQ test might examine, it is useful to see more specific questions. Here are a few test questions that could be encountered on an IQ test:

Which number should come next in the pattern?
37, 34, 31, 28

Answer: 25, the numbers are decreasing by 3

Find the answer that best completes the analogy:
Book is to Reading as Fork is to:

a. drawing

b. writing

c. stirring

d. eating

Answer: d.

Find two words, one from each group, that are the closest in meaning:
Group A

talkative, job, ecstatic

Group B

angry, wind, loquacious

a. talkative and wind

b. job and angry

c. talkative and loquacious

d. ecstatic and angry

Answer: c. Talkative and Loquacious

Which of the following can be arranged into a 5-letter English word?
a. H R G S T

b. R I L S A

c. T O O M T

d. W Q R G S

Answer: b. rails and c. motto

What number best completes the analogy:
8:4 as 10:

a. 3

b. 7

c.24

d.5

The answer is 5 because 4 is half of 8, and 5 is half of 10.