A) Number of electrons B) Atomic number C) Oxidation number D) Mass number
A) Potassium B) Iron C) Calcium D) Silver
A) 2- chloro but-I ,3-diene. B) But-1,3-chlorodiene. C) 2-chloro but-diene. D) 3 -chloro but -1.3-diene.
A) Cations B) Anions C) Halogens D) Halides
A) +1 B) +3 C) +5 D) +6
A) C2H5OH B) C3H7OH C) CH3OH D) C4H9OH
A) The rates of the forward and backward reactions are equal B) The amount of product equals the amount of reactants C) All reactions cease to occur D) The reaction has gone to completion
A) Electrovalent B) Covalent C) Hydrogen D) Dative
A) Periodic law B) Hund's rule C) Pauli's exclusion principle D) Afbau's principle
A) Sodium B) Copper C) Potassium D) Zinc
A) Greater number of valence electrons B) Larger Atomic Size C) Lower melting point D) Smaller Atomic size
A) Hybridization of Orbitals B) Gaining of electrons C) Losing of electrons D) Sharing electrons
A) Carbon (II) oxide B) Hydrogen Sulphide C) Sewage D) Plastic
A) Nearness to industrial establishment B) Favourable climate condition C) Availability of storage facilities D) Nearness to raw materials
A) Carbon (IV) oxide B) Oxygen C) Ethene D) Water
A) Functional B) Positional C) Optical D) Geometrical
A) C12H12O11 B) C3H8O C) C6H12O D) C6H12O2
A) Atmospheric pressure B) Total pressure C) partial pressure D) Vapour pressure
A) Distillation B) Crystalization C) Chromatography D) Electrolysis
A) Valence electrons B) Valence shells C) Electrons D) Core electrons
A) Spontaneous B) Slow C) Exothermic D) Endothermic
A) Constant composition B) conservation of mass C) conservation of energy D) Multiple proportion
A) 0.50 mol B) 0.25 mol C) 0.20 mol D) 0.40 mol
A) are metals B) form colourless salts C) have same number of valence electrons D) form cations
A) Saturated B) Concentrated C) Diluted D) Unsaturated
A) A spectra B) An orbital C) A field D) A quanta
A) Have low boiling points B) Have mobile electrons C) Dissolve in polar solvent D) Conduct electricity in its solid state
A) 9.65 C B) 965 C C) 9650 C D) 96500 C
A) Halogenation B) esterification C) Saponification D) Carboxylation
A) Hydrogen B) Ethene C) Sulphur D) Methane
A) Propane B) Hexane C) Benzene D) Pentane
A) quantum numbers of electrons B) filling the orbitals with lower energy first C) the filling of degenerated orbitals D) quantity of electrons in the valence shell
A) oxygen is more reactive than nitrogen B) of the difference in their boiling points C) nitrogen is less dense than oxygen D) they belong to the same period
A) 2.00gdm−3 B) 80.00gdm−3 C) 8.00gdm−3 D) 0.08gdm−3
A) double anions in its aqueous solution B) hydrogen atoms in its aqueous solution C) a single cation in its aqueous solution D) hydrogen ions in its aqueous solution
A) bond forming energy exceeds bond breaking energy B) enthalpy change is negative C) reaction vessel feels cool during the reaction D) heat of formation of reactants exceeds heat of formation of products
A) HCl B) NH3 C) CH4 D) NaH
A) C4H8 B) C2H4 C) C3H6 D) C3H4
A) 76.0g B) 80.0g C) 96.0g D) 66.0g
A) nuclear charge decreases while the outermost electrons are drawn closer to the nucleus B) valence electrons increase across the period while the valence shell remains constant C) nuclear charge increases while the outermost electrons are drawn closer to the nucleus D) nuclear charge decreases while the distance of the valence shell from the nucleus is increasing
A) +2 B) +3 C) +4 D) +5
A) K B) Al C) Na D) Mg
A) high melting point B) durability C) hardness D) octahedral shape
A) 10.00 B) 1000.00 C) 100.00 D) 0.01
A) have octahedral shape B) form carbon(IV) oxide on combustion C) conduct electricity D) have same density
A) an oxidizing agent B) an acid C) a base D) a reducing agent
A) 0.245g B) 0.0245g C) 0.049g D) 0.490g
A) 20°C B) 30°C C) 0°C D) 40°C
A) mechanism of electrolysis B) nature of the electrode C) electrochemical reactions D) electrolytic reactions
A) 2px B) 2s orbital C) 3s orbital D) 1s orbital
A) sand B) fire blanket C) water D) carbon(IV) oxide
A) Formation of salt and water with alkalis B) Evolution of carbon dioxide gas when added to a trioxocarbonate (IV) salt C) Formation of salt and hydrogen gas with reactive metals D) Evolution of ammonia when heated with ammonium salts
A) 1.2 × 1023 B) 2.4 × 1023 C) 2.4 × 1022 D) 1.2 × 1022
A) PbSO4 B) FeSO4 C) CuSO4 D) Na2SO4
A) photosynthesis B) manufacture of cement C) combustion D) production of ammonia
A) 75cm3 B) 25cm3 C) 30cm3 D) 150cm3
A) boiling point B) heat capacity C) mass D) colour
A) = 7 B) 0 C) < 7 D) > 7
A) Electronegativity B) Catalytic ability C) Ionization potential D) Electron Affinity
A) vibrational and random motion B) vibrational motion C) vibrational and translational motion D) random and translational motion |