SSC CGL Chemistry Questions and Answers – Page 7

Option A (“CO2”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question. Option B (“CH4”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question. Option D (“N2O”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question. N2 is not a greenhouse gas. CO2 CH4 N2O H2O and O3 are greenhouse gases that trap heat in atmosphere.

n and sp3 hybridization giving tetrahedral geometry. Option A (“Square planar”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question. Option C (“Octahedral”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question. Option D (“Linear”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question. The answer field, correct index and explanation therefore all identify Tetrahedral.[Ni(CO)4] has Ni in zero oxidation state with d10 configuration and sp3 hybridization giving tetrahedral geometry.

is a biodegradable polymer used in packaging. Option A (“PVC”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question. Option B (“Nylon”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question. Option D (“Teflon”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question. The answer field, correct index and explanation therefore all identify PHBV. PHBV (polyhydroxybutyrate-co-valerate) is a biodegradable polymer used in packaging.

ves SO3 (with V2O5 catalyst) then SO3 + H2O gives H2SO4. Option A (“Haber process”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question. Option C (“Solvay process”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question. Option D (“Birkeland-Eyde process”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question. The answer field, correct index and explanation therefore all identify Contact process. Contact process: SO2 + O2 gives SO3 (with V2O5 catalyst) then SO3 + H2O gives H2SO4.

Option A (“CH4”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question. Option B (“CH3Cl”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question. Option D (“Ethane”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question. The answer field, correct index and explanation therefore all identify 2-butene.2-butene (CH3-CH=CH-CH3) shows cis-trans isomerism due to restricted rotation around C=C double bond.

Net CFSE = 0. For d5 high spin: 3 electrons in t2g (-4Dq each) + 2 in eg (+6Dq each) = -12+12 = 0 Dq.

Option A (“Methanol”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question. Option C (“Benzaldehyde”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question. Option D (“Acetic acid”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question. The answer field, correct index and explanation therefore all identify Ethanol. Iodoform test is positive for ethanol and compounds with CH3CO- group.

Option A (“Phenol”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question. Option C (“Ketone”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question. Option D (“Amine”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question. The answer field, correct index and explanation therefore all identify Aldehyde. Fehling solution is used to distinguish aldehydes from ketones.

answer: Option C — Nylon 6-6 — is correct. Nylon-6 Option A (“Polyethylene”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question. Option B (“PVC”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question. Option D (“Polystyrene”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question. The answer field, correct index and explanation therefore all identify Nylon 6-6.

Molar conductivity is sum of ionic conductances. Option B (“Product of ionic conductances”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question. Option C (“Ratio of ionic conductances”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question. Option D (“Square of ionic conductances”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question. The answer field, correct index and explanation therefore all identify Sum of ionic conductances. Kohlrausch Law: Lambda_m(inf) = v+ Lambda+(inf) + v- Lambda-(inf).