Home - Mock Test - CHEMISTRY (Part-V) (Railway)Mock TestCHEMISTRY (Part-V) (Railway)by GouravUpdated On: April 10, 2025 Total Questions: 301. Which of the following chemical reactions represents the chlor-alkali process? [RRB Group 'D' CBT Exam, 18.08.2022 Shift-III](1) NaHCO₃ + H⁺ → CO₂ + H₂O + Sodium salt of acid(2) NaCl + H₂O + CO₂ + NH₃ → NH₄Cl + NaHCO₃(3) 2 NaCl (aq) + 2 H₂O(l) → 2 NaOH (aq) + Cl₂ (g) + H₂ (g)(4) Ca(OH)₂ + Cl₂ → CaOCl₂ + H₂OCorrect Answer: (3) 2 NaCl (aq) + 2 H₂O(l) → 2 NaOH (aq) + Cl₂ (g) + H₂ (g)2. A magnesium ribbon burns with a dazzling flame in air (oxygen) and changes into a white substance 'X'. The X is: [RRB Group 'D' CBT Exam, 18.08.2022 Shift-III](1) MgCO₃ (2) Mg(3) Mg(OH)₂(4) MgOCorrect Answer: (4) MgO3. Which of the following has the largest atomic radius? [RRB Group D' CBT Exam, 18.08 2022 (Shift-III)](1) Chlorine(2) Fluorine(3) lodine(4) OxygenCorrect Answer: (3) lodine4. Carbon is able to form stable compounds because of: [RRB Group 'D' CBT Exam, 18.08.2022 (Shift-III)](1) Its ability to form covalent bond(2) its allotropic forms(3) its smaller atomic size(4) the presence of p-orbitalCorrect Answer: (3) its smaller atomic size5. Compounds C₂H₆ and C₃H₈ are differ by ________ unit and belong to_________ series.(1) CH₂ heterogeneous(2) CH₃ homologous(3) CH₃ heterogeneous(4) CH₂ homologousCorrect Answer: (4) CH₂ homologous6. _________ aid (s) in the emulsification of fat. [RRB Group 'D' CBT Exam, 18.08.2022 (Shift-III)](1) Bile salts(2) Pepsin(3) HC1(4) Vit-K TrypsinCorrect Answer: (1) Bile salts7. What happens when sodium metal reacts with water? [RRB Group 'D' CBT Exam, 18.08.2022 (Shift-III)](1) Chlorine gas and sodium hydroxide solution are pro-duced.(2) No reaction takes place(3) Only sodium hydroxide solution is produced.(4) Hydrogen gas sodium hydroxide solution are pro-duced.Correct Answer: (4) Hydrogen gas sodium hydroxide solution are pro-duced.8. Alcohols react with sodium leading to the evolution of which of the following gases? [RRB Group 'D' CBT Exam, 22.08.2022 (Shift-I)](1) Carbon dioxide(2) No evolution of Gas.(3) Oxygen(4) HydrogenCorrect Answer: (4) Hydrogen9. In the given chemical reac-tion, which of the following chemical species acts as an oxidising agent and as a reducing agent, respectively? [RRB Group D CBT Exam, 22.08.2022 (Shift-I)]2Al + Fe₂O₃ → Al₂O₃ + 2Fe(1) Al and Fe(2) Fe and Al(3) Fe₂O₃ and Al(4) Al₂O₃ and FeCorrect Answer: (3) Fe₂O₃ and Al10. Which among the following groups of elements has the tendency to make acidic oxide? [RRB Group 'D' CBT Exam, 22.08.2022 (Shift-I)](1) 1(2) 16(3) 13(4) 2Correct Answer: (2) 16Submit Quiz123Next »Gourav
