SSC CGL Chemistry Questions and Answers – Page 10

f propane so it is 2-propanol or isopropyl alcohol. Option A (“1-propanol”) 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 (“Propan-1-ol”) 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 (“Methyl ethanol”) 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-propanol. OH is on 2nd carbon of propane so it is 2-propanol or isopropyl alcohol.

es into Na+ and Cl- ions making it a strong electrolyte. Option A (“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. Option B (“Ammonia”) 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 (“Carbonic 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 Sodium chloride. NaCl fully dissociates into Na+ and Cl- ions making it a strong electrolyte.

is extracted by thermite process where Al reduces Cr2O3. Option A (“Electrolysis”) 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 (“Froth floatation”) 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 (“Zone refining”) 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 Thermite process. Chromium is extracted by thermite process where Al reduces Cr2O3.

= -log(0.001) = 3. The answer field, correct index and explanation therefore all identify 3.pH = -log[H+] = -log(0.001) = 3.

different ions in solution having same molecular formula. Option A (“Spatial arrangement”) 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 (“Ligand linkage”) 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 (“Coordination number”) 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 Ions in solution. Ionisation isomers produce different ions in solution having same molecular formula.

Pressure inversely proportional to Volume at constant T. Option A (“P directly proportional to V”) 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 (“P independent of V”) 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 (“P equals V”) 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 P inversely proportional to V. Boyle Law: PV = constant.

Option A (“Alloys”) 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 (“Isotopes”) 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 (“Polymers”) 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 Ultra pure metals. Zone refining purifies metals like Si and Ge to very high purity for semiconductors.

Option A (“Gold sol”) 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 (“Sulphur sol”) 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 (“Arsenious sulphide sol”) 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 Starch sol. Starch sol is lyophilic because dispersed phase has affinity for dispersion medium.

Option C (“sp3”) 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 (“sp3d”) 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 sp2. Each carbon in benzene is sp2 hybridized forming planar hexagonal ring.

orine has electronegativity 4.0 on Pauling scale. Option A (“Oxygen”) 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 (“Nitrogen”) 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 (“Chlorine”) 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 Fluorine. Fluorine has electronegativity 4.0 on Pauling scale.