G10 Sci Comp 23

Physics

100

Newton’s 3rd law

a. F=Ma

b. An object in motion stays in motion until acted by an unbalanced force

c. For every action, there is an equal and opposite reaction

d. An object's force is equal to its mass times its acceleration

c. For every action there is an equal and opposite reaction

200

If you're riding your bike and stop pedaling, why do you slow down?

a. gravity slows you down

b. The force of friction is acting on your bike

c. momentum slows it down

d. None of the above

b. The force of friction is acting on your bike

300

A car moving at 4.5 m/s accelerates at 2.5 m/s2. After 7 s, how fast will it be moving?

a. 22 m/s

b. 18.3 m/s

c. 4.9 m/s

d. 7.6 m/s

a. 22 m/s

400

Which of the following is correct about transverse mechanical waves?

[A] they can travel through solids and gases

[B] they can travel through solids but not liquids

[C] they can travel through solids and liquids

[D] they can travel through gases but not solids

[A] they can travel through solids and gases

500

What is the minimum distance (in metres) required to hear an echo?

[A] 10

[B] 13

[C] 17

[D] 21

[C] 17

Chemistry

100

What percentage of the Human body is made up of carbon?

[A] 12

[B] 18.5

[C] 28.8

[D] 44.2

[B] 18.5

200

Which of the following gases is responsible for the burning of eyes when we cut an onion?

[A] Chlorine

[B] Helium

[C] Sulphur

[D] Methane

[C] Sulphur

300

What happens to a helium atom when it loses an electron?

[A] It becomes an alpha particle

[B] It becomes a negative helium Ion

[C] It becomes a positive Helium ion

[D] It becomes a proton

[C] It becomes a positive Helium ion

400

Which of the following salts is the main component of the common black snake firework?

[A] Washing Soda

[B] Baking Soda

[C] Soda Lime

[D] Caustic Soda

[B] Baking Soda

500

Nitrogen is an essential constituent of all :

[A] Fats

[B] Proteins

[C] Vitamins

[D] Carbohydrates

[B] Proteins

Biology

100

The muscle that separates the right side of the heart from the left side is called……

A.Pericardium              

B.Septum           

 C.Mediastinum 

B.Septum  

200

What is the element found in chrlorophyll?

A. Magnesium               B.Iron                 C. Calcium.

A. Magnesium  

300

The relation between man and gut bacteria is?

A. Parasitism                B.Predation                        C.Mutualism

C.Mutualism

400

Amoeba moves with?

A. Flagellum       B. Pseudopodium            C. Cilia.

 B. Pseudopodium

500

How does carbon dioxide enter the leaf?

A.Through the vascular system       B.Through the chloroplasts    C.Through the stomata

C.Through the stomata