When zinc metal is added to copper sulphate solution the products are copper and zinc sulphate solution, so the material that has been displaced must be:

January 1, 1999 a trader bought 100 articles at $5.00 each. During the month 70 Of the articles were sold at $8.00 each and the remainder were sold on January at the market value of $3.00 each. What was the gross for the month?

When something gets hotter, the particles in it gain more:

The electrical charges on a proton and an electron are:

When testing a leaf for the presence of starch, the correct sequence of procedures is:

Single-celled organisms do not need a transport system because:

If x = 3² × 2³, then x⁴ =

Which of the following documents may be used to inform a customer of an undercharge on an invoice?

Eight bits are called a __________.

The triangle ABC above shows the angle of elevation of the top, B, of a tower, BC, from A, to be 30°. AB = 40 m. The length of BC is

Demersals are fish that are found:

The Item refer to the information below The following scores were obtained by eleven footballers in a goal-shoot competition:

The median score was

The catalyst in the Haber Process is:

The method by which certain uranium and plutonium nuclei can release energy in a reactor is known as:

The following figures are taken from a manufacturing account.


The cost of tie year's production of finished goods is

Which one of the following factors does NOT affect the rate of transpiration?

The part of the brain that processes information from the sense organs is the:

The area of the trapezium ABCD above is

In a water condenser the cooling water enters at:

Sweating can help to cool the body. This cooling is achieved mainly by: