The shaded area in the Venn diagram above represents

How many subsets does the set {a, b, c, d, e} have?

Ammonia gas spreads out faster than hydrogen chloride, showing that it is:

Which of the following are natural barriers to infection?
Ⅰ tears
Ⅱ skin
Ⅲ stomach acid
Ⅳ mucus

The group of elements whose molecules and atoms are the same is called:

Natural Increase in Population

The natural increase in population for country X in 2006 was

Which one of these four statements is NOT true?

Which one of the following statements about constructive interference is NOT true?

The pH scale runs from 1 to:

Dividing 9 × 10^-2 by 3 × 10^-8 gives:

The number 32747 written to 4 significant figures is

Which of the following sets has an infinite number of members?

Breathing in fish involves which two processes?

Instructions: Choose from the four suggested answers the word which is closest to OPPOSITE in meaning to the underlined word.

As a result of the need for trained staff, the firm had to dismiss several workers.

Asexual reproduction produces:

The main site of action of ADH (antidiuretic hormone).

The number of double bonds in a molecule of carbon dioxide is:

All of these are used as food additives EXCEPT for:

Which of the following sets has a finite number of members?

Which of the following transactions should be debited in the Cash Account?