Question # 1

One hectare is approximately how many acres:

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1

3.5

2

2.5

What would used to measure Lumious intensity:

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Thermostat

Luminometer

Luxmeter

Carbon film Reflector

Which file extensions indicated only graphic files?

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JPEG and TXT

BMP and GIF

Both a and b

None of these

which metal is solve - with in colour developing a slighly yellow/pink a colour upon exposure to air. It is widely distributed on earth and occurs in over 800 known mineral. its oxide is used in the production of high intensity lights.

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Silver

yttrium

Scandium

Aluminum

Which one of the following is a vector?

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Kinetic energy

Pressure

Rate of change of momentum

Density

In a food chain, the solar energy utilized by plants is only?

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0.1 percent

10 percent

1 percent

0.01 percent

Which of the following is least effective in photosynthesis?

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Sunlight

Red Light

Blue Light

Green Light

The main difference between the living and nonliving is

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in the growth

in the size

in the the movement

in the process of protoplasm

When both sexes are absent from a flower or are non-functional, the flower is said to

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Incomplete

intersexual

Neuter

Unisexual

A ball bounces higher at high altitudes than on plains,because:

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The pressure at higher altitudes is higher than that on plains

The downward pu8ll due to gravity is higher than that on plans

The rarefied air offers less resistance to the ball

The air is more pure at higher altitudes

Who is often called the African - American inventor?

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George Washington Carver

Bessie Blount

Elijah McCoy

Benjamin Banneker

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