Grand test

A salt is formed when nitric acid combines with sodium hydroxide. What is present in the salt that forms?

• Sodium chloride

• sodium ions and nitrate ions

• only sodium ions

• only nitrate ions

H²SO_{4 is the formula of ________________________.}

What is a displacement reaction

What is a neutralization reaction?

Sodium has very ___________ reaction with oxygen.

Group I metals are ________ reactive than group II metals.

• more

• less

• very less

What are the products if magnesium reacts with hydrochloric acid?

• Magnesium chloride + Hydrogen

• Magnesium sulfide + Hydrogen

• Magnesium sulfate + Hydrogen

• Magnesium oxide + Hydrogen

Many metals are extracted from their ores by heating them with carbon in huge furnaces. Name that furnace.

• gas furnace

• sandblast furnace

• oil furnace

• Electric furnace

What is the use of thermite reaction?

• attraction

• welding

• boiling

• extraction of ores

. How can you identify the gas when metal is reacting with water?

• it produces fire

• the gas will turn off the burning splint

• the gas will turn lime water into milky

• the gas will turn off the burning splint with a pop sound