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

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

Hormonal methods of contraception work by:

Which one of the following statements about ∝ particles is NOT true?

Instructions: Choose the one NEAREST in MEANING to the original sentence.

No right thinking person who has lived in this country will fail to understand my disgust at noise.

Instructions: Choose the one NEAREST in MEANING to the original sentence.

If students' efforts are rewarded they would be encouraged to work harder.

If the relative atomic mass (RAM) = 1 for hydrogen and 16 for oxygen, the formula mass for H₂O₂ is:

Vaccination causes a person′s immune system to produce:

For Mg++ to turn into an atom of magnesium metal it must:

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

The number of atoms in this formula, H₂SO₄, is:

When limestone is heated strongly it changes into:

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

Which of the following methods of fishing is MOST damaging to the eco-system?

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

Which of the following is a prime number?

The following are all minerals EXCEPT for:

An example of an air pollutant is:

POPULATION PYRAMID FOR COUNTRY X

Which of the following features of Country X may be gathered from the diagram above?

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