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