Home - Mock Test - CHEMISTRY (Part-V) (Railway)Mock TestCHEMISTRY (Part-V) (Railway)by GouravUpdated On: April 10, 2025 Total Questions: 3011. Metallic oxides are generally of _________ nature [RRB Group 'D' CBT Exam, 22.08.2022 (Shift-I)](1) Neutral(2) Acidic(3) Sweet(4) AlkalineCorrect Answer: (4) Alkaline12. Nuland's octets start with _________ and end with _________ respectively [RRB Group 'D' CBT Exam, 22.08.2022 (Shift-I)](1) H; Th(2) Li; Na(3) He; Ar(4) Mg; CaCorrect Answer: (1) H; Th13. An element A reacts with water to form a solution which turns phenolphthalein solution to pink. Element A has the maximum probability to be_______. [RRB Group 'D' CBT Exam, 22.08.2022 (Shift-I)](1) S(2) Mg(3) Ag(4) CCorrect Answer: (2) Mg14. Which of the following elements shows maximum valence electrons ? [RRB Group 'D' CBT Exam, 22.08.2022 (Shift-II)](1) F(2) Al(3) H(4) NCorrect Answer: (1) F15. What is the correct order of elements according to their valence shell electronc? [RRB Group 'D' CBT Exam, 22.08.2022 (Shift-II)](1) Ne > N > F > Be(2) F > O > C > Li(3) Li > O > C > F(4) B > C > O> FCorrect Answer: (2) F > O > C > Li16. To cook some foods faster we can use__________ . [RRB Group D CBT Exam, 22.08.2022 (Shift-II)](1) sodium chloride(2) baking powder(3) bleaching powder(4) ammonium chlorideCorrect Answer: (2) baking powder17. What will be the fourth next member of the homologous series of the compound propene? [RRB D' CBT Exam, 22.08.2022 (Shift-I)](1) C₆H₁₂(2) C₇H₁₄(3) C₄H₈(4) C₂H₄Correct Answer: (2) C₇H₁₄18. Five solutions, A, B, c, D, and E, when tested wth universal Indicator, showed pH as 4, 1, 11, 7 and 9, respectively. The pH is increasing order of H⁺ ion concentration for these solutions is: [RRB Group 'D' CBT Exam, 22.08.2022 (Shift-II)](1) C < D < E < A < B(2) C < D < E < B < A(3) C < E < D < A < B(4) D < C < E < A < BCorrect Answer: (3) C < E < D < A < B19. The following reaction is an example of ________. [RRB Group 'D' CBT Exam, 22.08.2022 (Shift-II)]mg(OH)₂ + 2HCl → MgCl₂ + 2H₂O)(1) neutralisation reaction(2) decomposition reaction(3) combination reaction(4) precipitate reactionCorrect Answer: (1) neutralisation reaction20. Carbon is unable to form C⁴⁺ ion because_____. [RRB Group 'D' CBT Exam, 22.08.2022 (Shift-II)](1) it has tetra valency(2) it gains electrons easily(3) it shows catenation property(4) its formation requires a large amount of energyCorrect Answer: (4) its formation requires a large amount of energySubmit Quiz« Previous123Next »Gourav
