CHEMISTRY (Part-V) (Railway)

11. Metallic oxides are generally of _________ nature [RRB Group 'D' CBT Exam, 22.08.2022 (Shift-I)]

(1) Neutral
(2) Acidic
(3) Sweet
(4) Alkaline

Correct Answer: (4) Alkaline

12. 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; Ca

Correct Answer: (1) H; Th

13. 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) C

Correct Answer: (2) Mg

14. 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) N

Correct Answer: (1) F

15. 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> F

Correct Answer: (2) F > O > C > Li

16. 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 chloride

Correct Answer: (2) baking powder

17. 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) C₂H₄

Correct Answer: (2) C₇H₁₄

18. 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 < B

Correct Answer: (3) C < E < D < A < B

19. 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 reaction

Correct Answer: (1) neutralisation reaction

20. 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 energy

Correct Answer: (4) its formation requires a large amount of energy

CHEMISTRY (Part-V) (Railway)

11. Metallic oxides are generally of _________ nature [RRB Group 'D' CBT Exam, 22.08.2022 (Shift-I)]

12. Nuland's octets start with _ and end with _ respectively [RRB Group 'D' CBT Exam, 22.08.2022 (Shift-I)]

13. 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)]

14. Which of the following elements shows maximum valence electrons ? [RRB Group 'D' CBT Exam, 22.08.2022 (Shift-II)]

15. What is the correct order of elements according to their valence shell electronc? [RRB Group 'D' CBT Exam, 22.08.2022 (Shift-II)]

16. To cook some foods faster we can use__________ . [RRB Group D CBT Exam, 22.08.2022 (Shift-II)]

17. What will be the fourth next member of the homologous series of the compound propene? [RRB D' CBT Exam, 22.08.2022 (Shift-I)]

18. 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)]

19. The following reaction is an example of ________. [RRB Group 'D' CBT Exam, 22.08.2022 (Shift-II)]

20. Carbon is unable to form C⁴⁺ ion because_____. [RRB Group 'D' CBT Exam, 22.08.2022 (Shift-II)]

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CHEMISTRY (Part-V) (Railway)

11. Metallic oxides are generally of _________ nature [RRB Group 'D' CBT Exam, 22.08.2022 (Shift-I)]

12. Nuland's octets start with _________ and end with _________ respectively [RRB Group 'D' CBT Exam, 22.08.2022 (Shift-I)]

13. 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)]

14. Which of the following elements shows maximum valence electrons ? [RRB Group 'D' CBT Exam, 22.08.2022 (Shift-II)]

15. What is the correct order of elements according to their valence shell electronc? [RRB Group 'D' CBT Exam, 22.08.2022 (Shift-II)]

16. To cook some foods faster we can use__________ . [RRB Group D CBT Exam, 22.08.2022 (Shift-II)]

17. What will be the fourth next member of the homologous series of the compound propene? [RRB D' CBT Exam, 22.08.2022 (Shift-I)]

18. 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)]

19. The following reaction is an example of ________. [RRB Group 'D' CBT Exam, 22.08.2022 (Shift-II)]

20. Carbon is unable to form C⁴⁺ ion because_____. [RRB Group 'D' CBT Exam, 22.08.2022 (Shift-II)]

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Leave a Reply Cancel reply

Cancel reply

12. Nuland's octets start with _ and end with _ respectively [RRB Group 'D' CBT Exam, 22.08.2022 (Shift-I)]