When we sweat, we lose heat because:

A loudspeaker emits a steady note.A girl sings a note which is of lower pitch but higher volume. The sound wave she is producing has:

Which of the following characteristics MUST ALL formal groups possess?

1. Membership requirements
2. Code of conduct
3. Specific objectives
4. Elected leaders

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?

Which of the following entries should be used to post Sales return?

All of these are properties of carbon monoxide EXCEPT for:

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

The problem with the students is that they arrive late, gives no excuse, and are rude when spoken to.

A trader received an invoice for $4,000 less 25% trade discount. Subsequently he returned one eighth of the goods. What amount would be entered in his Returns Outwards Account?

The halogen, bromine, at room temperature is a:

The optimum pH for most enzyme action is:

The only one of the following which is NOT a change of state is:

Automated directory assistance services utilize __________ technology for accepting user input.

If ƒ : x → x² + 1, then ƒ(-3) is

Urea is made from surplus proteins in:

All of the following are components of an ecosystem EXCEPT for:

A circular hole with diameter 6 cm is cut out of a circular piece of card with a diameter of 12 cm. The area of the remaining card, in cm² , is

What would be the best materials to use for making the coil and the core of an electromagnet?

The standard atom used for mass calculations is:

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

The point where two neurones connect is called: