ACID BASES AND SALT AND PHYSICAL AND CHEMICAL CHANGES

WHICH ACID IS THE KING OF ALL ACIDS?

• NITRIC ACID

• LACTIC ACID

• COPPER SULPHATE

• FORMIC ACID

• SULPHURIC ACID

WHAT IS THE ACID WHICH IS PRESENT IN THE ANT ?

WHAT IS THE NAME OF BAKING SODA?

• SODIUM BI CARBONATE

• SODIUM HYDROXIDE

• SODIUM HYDROGEN CARBONATE

• SODIUM CHLORIDE

• BOTH OPTION 1 AND 3

_______________ AND______________ TOGETHER FORM NEUTRAL SUBSTANCE

• ACID

• SALT

• WATER

• BASE

WHAT IS THE WORD EQUATION FOR VINEGAR + BAKING SODA

• VINEGAR + BAKING SODA = CARBON DIOXIDE + OTHER SUBSTANCES

• VINEGAR + BAKING SODA = CARBON DIOXIDE + COPPER SULPHATE

• VINEGAR + BAKING SODA = SALT + WATER

• VINEGAR + BAKING SODA = CARBON DIOXIDE + HEAT = WATER

WHAT IS THE CHANGE FOR CUTTING OF TREE

WHAT IS THE CHANGE WHEN IRON NAIL IS PLACED IN COPPER SULPHATE ?

• COPPER SULPHATE SOLUTION TURNS GREEN

• FORMIC ACID IS FORMED

• IRON NAIL TURNS BROWNISH

• CARBON DIOXIDE IS FORMED

• BOTH OPTION 1 AND 3

PHYSICAL CHANGE IS THE CHANGE IN WHICH _____________ .

• NO NEW SUBSTANCE IS FORMED

• NEW SUBSTANCES IS FORMED

• NONE OF THESE

• ALL OF THE ABOVE

MAKING CURD FROM MILK IS CHEMICAL CHANGE ?

• TRUE

• FALSE