Complete the analogy: Oxygen : Respiration :: Carbon dioxide : _____.

If 15% of a number is 45, the number is:

Humidity refers to the amount of:

Antibiotics are generally effective against:

Common salt is chemically known as:

A fuse wire is used in an electric circuit to:

Ali is twice as old as Bilal. If Bilal is 12 years old, Ali is:

If 40 out of 100 students passed a test, the pass percentage is:

If today is Monday, what day will it be after 10 days?

All roses are flowers. Some flowers fade quickly. Which conclusion follows with certainty?

If CAT is coded as DBU, then DOG is coded as:

A man walks 5 km north and then 5 km east. In which direction is he from the starting point?

Which is the odd one out?

Book is to reading as fork is to:

Find the next number: 3, 6, 11, 18, 27, __.

Find the next number in the series: 2, 4, 8, 16, __.

The probability of getting a head when tossing a fair coin is:

The sum of angles in a triangle is:

If x + 5 = 12, then x is:

The square root of 144 is: