Form 4 Chemistry

All are soluble Except

• NaCl

• PbCl2

• KI

• KNO3

Answer explanation

Na-Sodium

K-Potassium

From SPA..NE

Is Zinc Nitrate soluble?

• Yes

• No

What is the chemical equation for Potassium Hydroxide + Sulphuric Acid?(Balance it)

• KOH + 2H2SO4---->K2SO4 + H2O

• KOH + H2SO4---->KSO4 + H2O

• NaOH+ H2SO4---->Na2SO4+H2O

• 2KOH+H2SO4---->K2SO4+H2O

Bromide salt is insoluble with..

• Pb2+,Ag+,Cl-

• Ag+,Hg+,Ba2+

• Hg+,Pb2+,Ag+

• Cl-,Pb2+,Hg+

Answer explanation

PAH

What is The colour of Iron(II) salts in the state of Solid?

• White

• Colourless

• Green

• Brown

Which salt/compound is considering in the state of solid?

• Potassium salts(Colourless)

• Copper(II)chloride(Blue)

• Iron(III)salts(Brown)

• Carbonate salts(Colourless)

Is Barium(II)sulphate soluble?

• Yes

• No

Which group of salt/compound is white when they're solid

• Carbonate salts,Iron(II) salts

• Lead(II)salts,Calcium salts

• Lead(II)oxide,Iron(III)salts

• Copper(II)sulphate,Sulphate salts

What is the colour of Zinc Oxide(Solid) when in hot condition?

• Blue

• Yellow

• Black

• Colourless

What is the colour of Iron(II) salt?

(a)