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