Match organic compounds: Isobutane=(CH₃)₂CHCH₃, n-Icosane=CH₃(CH₂)₁₈CH₃, n-Butane=CH₃(CH₂)₂CH₃, n-Undecane=CH₃(CH₂)₉CH₃

a-I,b-III,c-II,d-IV

Match elements: Radium=88, Titanium=22, Rhodium=45, Silicon=14

a-IV,b-III,c-I,d-II

Elements in increasing melting point: Argon < Phosphorus < Sodium < Magnesium

(c)<(d)<(b)<(a)

Correct: (a) Chemical potential is logarithmic for dilute solutions (d) In ideal solutions both obey Raoult's law

(a) and (d) only

Correct about chemistry: (a) Same atomic number different nucleon = isotopes (b) Non-metallic compounds form covalent mo

(a),(c) Only

Correct about chemistry: (a) Nitrogen reactions are endothermic (c) Ammonia is trigonal pyramidal

(a) and (c) only

Balanced equation HNO₃+NaOH→NaNO₃+H₂O: Only (b) is correct

(b) Only