Bihar Board 12th Exam 2019 Multiple Choice VVI Questions

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Chemistry is one of the compulsory subjects for Science Stream students in the class 12^th Bihar Board. BSEB ISC students are given special attention on BSEB 12^th Chemistry MCQ Question. Here we have collected Most and VVI BSEB Inter 2019 Chemistry MCQ Questions. 

BSEB Inter Chem 2019 VVI MCQ 

On this web page, all 01 to 35 Objective Questions with Answer has been given as well 05 Bonus Questions with Answer is provided for the student’s examination preparation point of view. For More Help view BSEB Chemistry Objective Questions with Answer 2018 

Students need to more and more practice with the previous year exam question of objective and descriptive. From the resultfor.in website, students can get all latest updates from Bihar School Examination Board as well get Tips with all supportive helps for the exam.

BSEB Chemistry Exam Update 2019

Chemistry is one of the Science Subject. In the Chemistry exam, Numerical and chemical reaction related questions come. To score full marks in Chemistry students need to Full syllabus revision and many time revision as well need to solve questions from the Bihar Board Inter Chemistry Questions Bank.

 Bihar Board Inter Chemistry Questions Bank 

For full revision need to practice with various Bihar board 2019 Model Set of chemistry within the time period. While writing of answer it give two benefits one writing speed will increase and help to remember answer by writing.

Bonus Suggestion: In short time students do practice with at least previous 05-year questions that will surely help to obtain 60%+ Marks.

Chemistry Objective Important Question for board Exam 2019 

1. What is the effect of Frenkel defect on the density of ionic solids?

1. The density of the crystal increases
2. The density of the crystal decrease
3. The density of the crystal remains unchanged
4. There is no relationship between density of a crystal and defect present in it.

2. Graphite cannot be classified as……

1. Conducting solid
2. Network solid
3. Covalent solid
4. Ionic solid

3. The sprinkling of salt helps in clearing the snow-covered roads in hills. The phenomenon involved in the process is:

1. Lowering in vapour pressure of snow
2. Depression in freezing point of snow
3. Increase in freezing point of snow
4. Melting of ice due to increase in temperature by putting salt

4. How long would it take to deposit 50g of AI from an electronic cell containing AI203 using a current of 105 ampere?

1. 54 h
2. 42 h
3. 32 h
4. 15 h

5. Which of the statement about solution of electrolytes is not correct

1. Conductivity of solution depends upon size of ions.
2. Conductivity of depends upon viscosity of solution.
3. Conductivity depend upon solvation of ions present in solution
4. Conductivity of solutions increases with temperature.

6. The overall rate of a reaction is governed by

1. The rate of fastest intermediate step
2. The sum total of the rates of all intermediate steps
3. The average of the rates of all the intermediate steps
4. The average of slowest intermediate step

7. Which of the following gas present in a polluted area will be adsorbed most easilty on the charcoal gas mask?

1. H2
2. O3
3. N2
4. SO2

8. The oil use as frothing agent in froth floatation process is:

1. Coconut oil
2. Castor oil
3. Palmitic oil
4. Pine oil

9. Which of the following is not a method of refining of metals?

1. Electrolysis
2. Smelting
3. Poling
4. Liquation

10. Which of the following elements is found in free state in nature?

1. Sodium
2. Iron
3. Zinc
4. Gold

11. Atomicity of phosphorus is:

1. One
2. Two
3. Three
4. Four

12. Sulphur molecule is:

1. Diatomic
2. Triatomic
3. Tetratomic
4. Octa-atomic

13. Which of the following is used to prepare CI2 gas at room temperature from concentrated HCI?

1. MnO2
2. H2S
3. KMnO4
4. Cr2O4

14. What is the oxidation state of sulphur is SF6

 A +6

B -6

C +4

D -4

15. In which of the following sulphur is present in +5 oxidation state?

1. Dithionic acid
2. Sulphuric acid
3. Peroxodisulphuric acid
4. Pyrosupphuric acid

16. Colour of transition metal ions are due to absorption of some wavelength. This results in

1. D-s transition
2. S-s transition
3. S-d transition
4. D-d transition

17. The most common lanthanoid is:

1. Lanthanum
2. Cerium
3. Samarium
4. Plutonium

18. Which of the following oxidation state is common for all lanthanoids?

 A +2

B +3

C +4

D + 5

19. There are 14 elements in actinoid series. Which of the following elements does not belong to this series?

1. U
2. Np
3. Tm
4. Fm

20. Transitior elements are

1. Metals
2. None metals
3. A-block elements
4. Gas

21. The number of possible isomers for the complex [Co(C2O)2 (NH3)2]

1. 1
2. 5
3. 3
4. 2

22. According to Werner’s theory of coordination compounds

1. Primary valency is ionisable
2. Secondary valency is iorrisable
3. Primary and secondary valencies are ionisable
4. Neither primary nor secondary valency is ionisable

23. The lowest value of paramangnetism is shown by:

1. [Co(CN)6]3-
2. [Fe(CN)6]3-
3. [Cr(CN)6]2-
4. [Mn(CN)6]3-

24. Among the following compounds which is both paramagnetic and coloured?

1. K2CrO7
2. [Co(SO)4]
3. (NH4)2[TiCI6]
4. K3[Cu(CN)4]

25. A chelating agent has two or more than two donor atoms to bind to a single metal ion. Which of the following is not a chelating agent?

1. Thiosulphato
2. Oxalato
3. Glycinato
4. Ethane -1, 2-diamine

26. IUPAC name of [Pt(NH3)2 CI (NO2)] is:

1. Platinum diaminechlornitrite
2. Chlornitrito-N-ammineplantinum (II)
3. Diamminechloridonitrito-N-Platinum (II)
4. Diamminechloronitrito-N-Platinate (II)

27. General formula of Alkene is:

1. CnH2n
2. CnH2n+2
3. CnH2n-2
4. None of these

28. Number of in ethane is:

1. One
2. Two
3. Three
4. Five

29. Primary, Secondary and Tertiary alcohols are distinguished by?

1. Oxidation method
2. Lucas reagent method
3. Victor Meyer’s Method
4. All of these

30. The reaction between phenol and chloroform in the presence of aqueous NaOH is

1. Nucleophilic substitution reaction
2. Electrophilic addition reaction
3. Electrophilic substitution reaction
4. Nucleophilic addition reaction

31. The enzyme which can catalyse the conversion of glucose to ethanol is:

1. Invertase
2. Zymase
3. Maltase
4. Diatase

32. Propanone can be prepared from ethyne by:

1. Passing a mixture of ethyne and steam over a catalyst, magnesium at 420°c
2. Passing a mixture of ethyne and ethanol over a catalyst zinc chromite
3. Boiling ethyne with water in the presence of HgSO4 and H2SO4
4. Treating ethyne with iodine and NaOH

33. The product of hydrolysis of ozonide of 1-butene are:

1. Ethanal only
2. Ehanal and methanal
3. Propanal and methanal
4. Methanal only

34. Which of the following does not answer iodoform test?

1. N-Butyl alcohol
2. Sec-Butyl alcohol
3. Acetophenone
4. Acetaldehyde

35. Few simple chemical tests are given below to differentiate between the pairs of compounds. Which of the following tests is not correct for differentiation?

1. Propanal and propanone-Silver mirror test
2. Acetopenone and benzophenone-Iodoform Test
3. Benzoic acid and ethyl benzoate-Sodium bicabonate test
4. Ethanal and propanal-Fehling’s test

36. The most convenient method to prepare primary (i Amine) amine containing one carbon atom less is:

1. Gabriel phthalmidie synthesis
2. Reductive amination of aldehydes
3. Hofmann bromanide reaction
4. Reduction of isonitriles

37. Amine that cannot be prepared by Gabriel-phthalmidie synthesis is:

1. Aniline
2. Benzyl amine
3. Methyl amine
4. Iso butylamine

38. Starch is composed of two polysaccharides which are:

1. Amylopectin and glycogen
2. Amylose and alycogen
3. Amylose (20%) and amylopectin (80%)
4. Cellulose and glycogen

39. DNA and RNA contain four bases each. Which of the following bases is not present in RNA?

1. Adenine
2. Uracil
3. Thymine
4. Cytosine

40. Synthetic polymer prepared by using Caprolactam is known:

1. Terlene
2. Teflon
3. Nylon 6
4. Neoprene

Please Note: Answer has given in bold and color letter. If you need any help in preparation of the examination then please let’s us know through the comment.