Which of the following statements about the mouth piece of a telephone is correct? It converts sound energy into

• A. acoustic energy
• B. mechanival energy
• C. electrical energy
• D. heat energy

When cells send a signal, it is often in the form of a secreted molecule. In some cases, a cell will secrete a molecule that binds to a receptor on its own cell surface. What type of signaling is this?

• A. Autocrine
• B. Paracrine
• C. Endocrine
• D. Exocrine

The most distant planet from us is

• A. neptune
• B. mars
• C. earth
• D. pluto

Select the option that best explains the information conveyed in the sentence. The men were not pawns in someone else's political game?

• A. The action they executed was their idea
• B. The men used someone else's plan
• C. They were used by someone's political game
• D. They loved playing political games

Hassan and Hussain are identical twins but Hassan grows taller and fatter from Hussain. This is probably because?

• A. Hassain inherits genes for tallness and fattness from the father
• B. They have dissimilar genotypes
• C. Hussain is endowed with genes for shortness and thinness
• D. They are raised in different environment

Potassium tetraoxomanganate (VII) is often added to impure water to?

• A. reduce organic impurities
• B. reduce inorganic impurities
• C. destroy bacteria and algae
• D. remove permanent hardness

The first petroleum exploring company to discover crude petroleum in Nigeria was?

• A. Mobil
• B. Texaco
• C. Agip
• D. Shell-BP

A casting is made up of Copper and Zinc. If 65% of the casting is Zinc and there are 147g of Copper. What is the mass of the casting?

• A. 320g
• B. 420g
• C. 520g
• D. 620g

Which of these is a major controlling factor of the climate of a place?

• A. Temperature
• B. Rainfall
• C. Air-mass
• D. Humidity

Fill the each gap with the most appropriate option from the list option from the list provided.

Of course we all saw the culprit ....... and hit the man on the head?

• A. approached
• B. approching
• C. approach
• D. approches