A) 15g B) 40g C) 10g D) 20g
A) 0.5mole B) 32.0mole C) 5.12mole D) 1.0mole
A) 0.6 mole B) 84 moles C) 42.00 moles D) 8.4 moles
A) 1.14 mol/dm³ B) 11.42 mol/dm³ C) 0.88 mol/dm³ D) 8.80 mol/dm³
A) 6.0 B) 2.7 C) 0.27 D) 1.7
A) Coagulate B) Not sedimentate C) Dialyse D) Not scatter light rays
A) Presence of heavy metal ions B) Increase in the level of sediment C) Reduction in the amount of dissolved oxygen D) Scarcity of food in water
A) Calcium trioxocarbonate (IV) B) Calcium hydroxide C) Calcium tetraoxosulphate (VI) D) Calcium hydrogen trioxocarbonate (IV)
A) White to red B) Blue to white C) Blue to pink D) White to green
A) Sodium tetraoxosulphate (VI) B) Copper tetraoxosulphate (VI) C) Calcium tetraoxosulphate (VI) D) Aluminium tetraoxosulphate (VI)
A) MgSO4.7H2O B) CaCl2.2H20 C) Na2CO3.10H2O D) Na2SO4.10H2O
A) Addition of a measured quantity of chlorine to water B) Exposure of a body of water to ultraviolet rays C) Passage of river water through a sand bed D) Discharge of industrial effluents into water ways.
A) Paper B) Plastics C) Animal hide D) Wood
A) Evaporation B) Passing of ships through the area C) Pouring of organic solvent D) Pouring of detergents
A) Unsaturated B) Saturated C) Hydrated D) Super saturated
A) The use of an ion -exchange resin B) Aeration C) Passing over treated charcoal D) Chlorination
A) Sodium aluminium trioxo -silicate (IV) B) Calcium hydrogen trioxocarbonate (IV) C) Calcium trioxocarbonate (IV) D) Sodium hydroxide
A) Spring water B) Pipe borne water C) Distilled water D) Chlorinated water
A) Suspensions B) Solvent C) Solute D) Solution
A) Concentration B) Colloids C) Universal solvent D) Dispersion medium |