201 Vinyl acetylene combines with hydrochloric acid produces___________________? Chemistry Medium Full question → A Diviny1 acetylene B Ethylidine dichloride C Chloroprene D 1 – 3 – 3 – trichloro butane
202 The density of water may be__________________? Chemistry Medium Full question → A Equal to that of ice B Greater than that of ice C Less than that of ice D All are possible
203 Which one is a conductor but is not malleable ? Chemistry Medium Full question → A Iron B Graphite C Silver D Platinum
204 Which one of the following does not show hydrogen bonding? Chemistry Medium Full question → A Water B Ethyl alcohol C Phenol D Diethyl ether
205 Which one is false for evaporation ? Chemistry Medium Full question → A Surface phenomenon B Continuous C Exothermic D Cause cooling
206 When the atoms of third layer are arranged in such a way that they directly lie above the atoms of first layer then this arrangement is called_________________? Chemistry Medium Full question → A ABAB (hexagonal) B ABCABC (Cubic) C Orthor hombic D Rhombohedral
207 Which has strongest bonding in the solid state ? Chemistry Medium Full question → A Hydrogen Chloride (HCI) B Chlorine (Cl2) C Xenon(Xe) D Sodium Chloride (NaCI)
208 All the enthalpy changes are________________? Chemistry Medium Full question → A Negative B Positive C May or may not be A or B D none
209 The pressure during the molar heat of fusion is kept________________? Chemistry Medium Full question → A 0 atmosphere B one atmosphere C 2 atmosphere D 10 atmosphere
210 Isomorphic substances have _______________? Chemistry Medium Full question → A Same physical and chemical properties B Same physical and different chemical properties C Different physical and same chemical properties D Different physical and chemical properties
211 Bucky balls is an allotropic from of__________________? Chemistry Medium Full question → A Sulphur B Carbon C Silica D Tin
212 The phenomenon in which a compound exists in two or more crystalline forms is called ________________? Chemistry Medium Full question → A Isomorphism B Polymorphism C Anisotropy D Allotropy
213 Boiling points of hydrocarbons increase with the increase in number of carbon atoms. It is mainly due to_________________? Chemistry Medium Full question → A More strength of H-bonding B More strength of London forces C Less polarizability D All of the above
214 Amorphous substances posses_________________? Chemistry Medium Full question → A No definite geometry B No definite heat of fusion C No sharp melting points D All of the above
215 A solid may be made up of_________________? Chemistry Medium Full question → A Atoms B Ions C Molecules D A, B, and C
216 If we provide very high amount of heat to a liquid its boiling point will__________________? Chemistry Medium Full question → A increase B remains constant C decrease D there will be no boiling
217 Which one of the following has highest volatility_________________? Chemistry Medium Full question → A Diethyl ether B Ethyl alcohol C Water D Ethylene glycol
218 During which process empty spaces between particles become minimum ? Chemistry Medium Full question → A ionization B condensation C fusion D evaporation
219 Table salt crystallizes with a______________________? Chemistry Medium Full question → A Face centered cubic lattice B body centered cubic lattice C simple cubic lattice D othorhombic lattice
220 Vapour pressure is not affected by_______________? Chemistry Medium Full question → A Surface area B temperature C intermolecular forces D atmospheric pressure