final revision part 2

 

the chemical formula of bicarbonate group is...........................

• (CO₃)^{- 2}  

• (HCO₃)^-    

• CO

• CO₂

 

The planet with the highest gravity is .............................

• Venus

• Earth

• Jupiter

Which of the following is considered an example of transitional motion?

• pendulum

• water waves

• moon

• train

The isolated coil in electromagnet made of……………..

• Copper

• mercury

• iron

the chemical formula of carbonate group is......................

• (CO₃)^{- 2}  

• (HCO₃)^-    

• CO₂

• CO

The mass of an object its weight is 98 Newton equals .........................

(earth's gravitational acceleration equal 10 m/ s²  )

• 9.8 kg

• 980 kg

• 0.98 kg

...........................is an igneous rock

• granite

• sanstone

• limestone

• marble

limestone reacts with HCl acid producing ...................gas

•  O₂

• CO₂

• CO

•  N₂

Sandstone reacts with HCl acid

• true

• false

the distance between 2 stars measured by km

• true

• false