When limestone is heated strongly it changes into:

A typical soil contains mineral particles, humus, water, air and:

The gross profit of a firm is $3,600, bad debts $100, rent paid $120, rent prepaid $20, general expenses $80 and discount received $110. The net profit is

Simple sugars are called monosaccharides because:

Three lights flash at intervals of 4, 6 and 10 seconds respectively. They are started together. How soon after will they next flash together again?

A store charges 15% VAT on all sales. What is the total cost of a TV set marked at $300 ?

A man's regular pay is $3 per hour up to 40 hours. Overtime is twice the payment for regular time. If he was paid $168, how many hours overtime did he work?

Quantity of electricity in coulombs = current in amps multiplied by:

The number of litres in 2000 cm³ is:

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.

When focussing on distant objects:

A relationship between two organisms where one organism derives benefits from the relationship and the other organism derives no benefit, but is not harmed, is called:

None of these solutions in water conducts electricity EXCEPT for:

All of the following processes result in energy loss from an ecosystem EXCEPT for:

Which of the following is a prime number?

Which of the following BEST characterizes a primary group?

Choose the ONE underlined part A, B or C that is inappropriate. If the sentence is acceptable as it stands, choose D.

There is hardly a point to our knocking as no one is not at home.

Profits in the partnership of Bess, Bill and Bob are shared in the ratio 1 : 2 : 3. If Bill's share of the profits is $300, what is Bob's share?

If x = 2³ × 5² =, then x⁴ =