A) mol/dm-3 B) g/mol C) dm3 D) mol/dm3
A) The variation of solubility of a substance with volume B) The variation of solubility of a substance with temperature C) How much substance is dissolved D) The way a solute dissolves
A) But-2-ene B) Butane C) But-2-yne D) But-1-yne
A) Alkynes B) Alkenes C) Alkanes D) Alkanols
A) C2H4 B) C3H5(OOCR)_3 C) RCOONa D) C3H5(OH)_3
A) Distilled water B) Palm oil C) Salt solution D) Baking soda
A) Water soap B) Toilet soap C) Hard soap D) Transparent soap
A) Hydrophilic heads B) Hydrophobic tails C) Soap foam D) Soap molecules
A) Micelles B) Hydrophilic heads C) Soap molecules D) Hydrophobic tails
A) Baking soda B) Dried soaps C) Petroleum hydrocarbons D) Ashes
A) Emulsifying oils B) Shaving creams C) Shampoos D) Bathing
A) Shampoos B) Laundry powders C) Shaving creams D) Dishwashing liquids
A) No mass B) 1/1840 unit C) 4 units D) 6 units
A) -1 B) +1 C) +2 D) It has no charge.
A) 100 B) 1 C) 10 000 D) 10
A) Why B) If C) How fast or slow D) How much
A) Chlorine B) Tin C) Fluorine D) Iodine
A) Pale yellow gas B) Grey crystalline solid C) Greenish yellow gas D) Reddish brown liquid
A) Oxygen gas B) Oxides, peroxides, superoxides. C) Trioxonitrates D) Hydrogen gas
A) Calcium B) Radium C) Magnesium D) Strontium
A) Oxygen gas B) Carbon dioxide C) Nitrogen gas D) Hydrogen gas
A) d-block B) f-block C) s-block D) p-block
A) Rubidium B) Iron C) Nickel D) Cobalt
A) 1s2 2s2 B) They do not have electronic configuration C) (n-1)d1-10ns0-2 D) (n-2)d1-10ns0-1
A) -2 B) +2 C) +6 D) +3
A) Solid B) Much C) Pure D) Big
A) Oxygen B) Hydrogen C) Carbon D) Nitrogen
A) Red B) Pale yellow C) Pale blue D) Orange
A) Water B) Hydrogen C) Nitrogen D) Carbon dioxide
A) Nitrogen B) Carbon C) Hydrogen D) Calcium
A) Oxides B) Oxygen gas C) Ionic halides D) Hydrogen gas
A) Barium B) Strontium C) Magnesium D) Aluminium
A) Chromium B) Argon C) Iron D) Radium
A) Radium B) Calcium C) Iron D) Argon
A) Magnesium B) Potassium C) Calcium D) Argon
A) Rays B) Nuclei C) Particles D) Radioisotopes
A) Na2SO4 B) NaCl C) HCl D) H2SO4
A) Branched B) Cyclic C) Chained D) Straight
A) Chained B) Linear C) Branched D) Cyclic
A) Not B) None of the above C) Partly D) Fully |