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