Friday, November 29, 2013

Support Material on PSA and Value Based Question for 2013-14 for Class IV to XII




Support Material on PSA, 2013-14
 Value Based Support Material 2013-14 for Class IV to XII
Class Class VI

 Class Class VIII

 Science
 English
 Social Science
 Science
 Mathematics
 Social Science


Mathematics

Thursday, November 28, 2013

JAC_Jharkhand Academic Council_SAMPLE QUESTIONS [http://jac.nic.in/]

CLASS 12th SAMPLE QUESTIONS (2014)
The Jharkhand Academic Council was established for holding and conducting examinations at the end of Intermediate, Education, Secondary Education, Sanskrit Education and Madrasa Education and for prescribing courses of studies for such examinations and for recommending for recognition of Intermediate Educational Institutions, High Schools, Sanskrit Schools and Madrasas to the State Government and for carrying out such other or duties assigned to the council by the State Govt from time to time.

Jharkhand Academic Council_SAMPLE QUESTIONS
12th_chemistry_jharkhand_board.       
12th_maths_jharkhand_board.rar      
12th_physics_jharkhand_board.rar     
12th_model_questions_paper_jharkhand_board_2014

Wednesday, November 27, 2013

MCQ's Science (086), Summative Assessment-II_Class X - (2013-14) CBSE BOARD

1. To study the following properties of acetic acid (ethanoic acid) :
i) odour ii) solubility in water iii) effect on litmus iv) reaction with sodium bicarbonate

2. To study saponification reaction for preparation of soap.

3. To study the comparative cleaning capacity of a sample of soap in soft and hard water.

4. To determine the focal length of

i. Concave mirror and ii. Convex lens by obtaining the image of a distant object.


5. To trace the path of a ray of light passing through a rectangular glass slab for different angles of incidence.

Measure the angle of incidence, angle of refraction, angle of emergence and interpret the result.

6. To study (a) binary fission in Amoeba and (b) budding in yeast with the help of prepared slides.

7. To trace the path of the rays of light through a glass prism.

8. To draw the images of an object formed by a convex lens when placed at various positions.

9. To study homology and analogy with the help of preserved / available specimens of  either animals or plants.

10. To identify the different parts of an embryo of a dicot seed ( Pea, gram or red kidney bean).


10th science Question Bank Experiment-1
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10th science Question Bank Experiment-2
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10th science Question Bank Experiment-3
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10th science Question Bank Experiment-5
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10th science Question Bank Experiment-6
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10th science Question Bank Experiment-7
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Picture
Answer: Practical based lab manual MCQ’s Experiments are listed below
Experiment – 1
Experiment – 2
Experiment – 3

[Focal length (Concave mirror and convex lens)]
Rectangular Glass Slab]
1. b
2. a
1. a
2. a
1. a
2. a
3. b
4. a
3. b
4. a
3. a
4. b
5. b
6. b
5. d
6. b
5. b
6. b
7. c
8. a
7. c
8. c
7. c
8. b
9. d
10. b
9. b
10. a
9. a
10. c
11. b
12. b
11. b
12. a
11. d
12. b
13. d

13. b




Experiment – 5
Experiment – 6
Experiment – 7
[Binary fission (Amoeba) ; Budding (Yeast)]
[Water soaked by Raisins]
[Properties of Acetic Acid]
1. b
2. c
1. b
2. c
1. c
2. c
3. b
4. d
3. a
4. b
3. c
4. a
5. b
6. b
5. c
6. b
5. c
6. a
7. d
8. b
7. c
8. c
7. a
8. c
9. a
10. c
9. a

9. b
10. c




11. b


Sunday, November 24, 2013

MCQ’S Based on : Aldehydes, Ketones and Haloalkanes


MCQ’S Based on : Aldehydes, Ketones and Haloalkanes
Q01. The general molecular formula of aldehydes and ketones is
1) CnH2n-1.O
2) CnH2nO
3) CnH2n+2O
4) CnH2n+4O
Q02. Aldehyde functional group can occur
1) Any where in the carbon chain
2) In the middle of the carbon chain
3) Only at the second carbon atom
4) only at either end carbon atom of the chain
Q03. Propan-2-ol on treatment with copper at 3000c forms
1) Acetone
2) Acetaldehyde
3) Ethane
4) Both 1 and 2
Q04. Which of the following is correct?
1) Aldehydes undergo Cannizzaro’s reaction
2) Aldehydes are less susceptible to oxidation than ketones
3) Aldehydes are more susceptible to oxidation than ketones
4) Formaldehyde forms CuO with Fehling’s solution
Q05. IUPAC name of CH3CHOHCH2CHO is
1) 2-hydroxybutanal
2) 2-hydroxypropanal
3) 3-hydroxybutanal
4) b-hydroxybutanal
Q06. The reagent which can be used to distinguish acetophenone from benzophenone is
1) 2, 4-dinitrophenyl hydrazine
2) Benedict’s solution
3) Tollen’s reagent
4) I2 and Na2CO3
Q07. Toluene on reacting with chromyl chloride gives:
1) Chlorotoluene
2) Benzyl chloride
3) Benzaldehyde
4) Benzoic acid
Q08. Mesitylene is prepared from
1) CH3CHO and conc. HNO3
2) CH3COCH3 and conc. H2SO4
3) CH3COCH3 and conc. HCl
4) CH3CHO and conc. H2SO4
Q09. (CH3)2C = CHCOCH3 can be oxidised to (CH3)2C = CHCOOH by
1) Chromic acid
2) NaOI
3) Cu at 3000c
4) KMNO4
Q10. Oppenaur oxidation is the reverse process of
1) Wolff –Kishner reduction
2) Rosenmund’s reduction
3) Clemmensen reduction
4) Meerwein-Pondorf-Verely reduction
Q11. In the reaction CH3CHO + CH2(COOH)2      ----------pyridine/heat ------->A.  The compound A is
1) CH3COOH
2) C2H5COOH
3) CH3CH = CHCOOH
4) COOHCH = CHCOOH
Q12. Benzaldehyde reacts with alcoholic KCN to give:
1) C6H5CH(OH)CN
2) C6H5CH(OH)COC6H5
3) C6H5CH(OH)COOH
4) C6H5CH(OH)CH(OH)C6H5
Q13. Aldehydes and ketones do not react with
1) sodium bisulphite
2) phenyl hydrazine
3) semi carbazide
4) di hydrazine sodium phosphate
Q14. Which of the following will undergo aldol condensation?
1) CH2=CHCHO
2) CH=CCHO
3) C6H5CHO
4) CH3CH2CHO
Q15. Which type of isomerism is shown by the pentanone
1) Chain isomerism
2) Position isomerism
3) Functional isomerism
4) All 1, 2 and 3
Q16. Paraldehyde is formed as a result of polymerisation of
1) CH3CHO
2) HCHO
3) CH3OH
4) CH3CH2CHO
Q17. Aromatic aldehydes in the presence of CN-  ion give acyloins. The reaction is known as
1) Perkin reaction
2) Benzoin condensation
3) Claisen condensation
4) Cannizzaro’s reaction
Q18. Which of the following method is used to convert ketone into hydrocarbon
1) aldol condensation
2) Reimer Tieman reaction
3) Cannizzaro’s reaction
4) Clemmensen’s reduction
Q19. Which will not give formaldehyde on heating or upon distillation?
1) Formalin
2) Trioxane
3) Paraldehyde 4) Paraformaldehyde

Q20. When ethanal is heated with Fehling’s solution it gives a precipitate of
1) Cu
2) CuO
3) Cu2O
4) CuO+Cu2O+Cu
Q21. When CH3CHBrCH2CH3 is reacted with alcoholic KOH the major product is
1) CH3CH=CHCH3
2) CH2=CHCH2CH3
3) CH3CH(OH)CH2CH3
4) CH3CH2CH2CH3
Q22. Benzene reacts with n-propyl chloride in the presence of anhydrous AlCl3 to give
1) 3-propyl-1-chlorobenzene
2) n-propyl benzene
3) No action
4) Isopropyl benzene
Q23. Identify Z in the following series:
CH2=CH2  -----HBr--->    X   ------Hydrolysis ----> Y    -----I2 / excess NaOH ----> Z
1) C2H5I
2) C2H5OH
3) CHI3
4) CH3CHO
Q24. Bromoethane reacts with silver nitrite to form
1) Nitroethane
2) Ethane
3) Ethylnitrite
4) Nitroethane and ethylnitrite
Q25. Which of the following compounds on oxidation gives benzoic acid?
1) o-Chlorophenol
2) p-Chlorotoluene
3) Chlorobenzene
4) Benzyl chloride
Q26. Reaction between alkyl halide and sodium metal is called
1) Wurtz reaction
2) Kolbe’s reaction
3) Clemmensen’s reaction
4) Wurtz - Fittig’s reaction
Q27. Which compound gives iodoform by reaction between I2 and NaOH?
1) CH3OH
2) C2H5OH
3) C3H7OH
4) C2H5OC2H5
Q28. The reactivity order of halides in dehydrohalogenation reaction is:
1) R-F > R-Cl > R-Br > R-I
2) R-I > R-Br > R-Cl > R-F
3) R-I >R-Cl > R-Br > R-F
4) R-F > R-I > R-Br > R-Cl
Q29. Which of the following undergoes nucleophilic substitution exclusively by SN1 mechanism?
1) ethyl chloride
2) isopropyl chloride
3) chlorobenzene
4) benzyl chloride
Q30. SN2 mechanism proceeds through intervention of:
1) carbocation
2) transition state
3) free radical
4) carbanion
ANSWERS

Q 01     2
Q 11     3
Q 21     1
Q 02     4
Q 12     2
Q 22     4
Q03      1
Q 13     4
Q 23     3
Q 04     3
Q 14     4
Q 24     4
Q 05     3
Q 15     4
Q 25     4
Q 06     4
Q 16     1
Q 26     1
Q 07     3
Q 17     2
Q 27     2
Q 08     2
Q 18     4
Q 28     2
Q 09     2
Q 19     3
Q 29     4
Q 10     4
Q 20     3
Q 30     2