CLASS : 11

SUBJECT : ENGLISH

Write the summary of all the chapters of THE

CANTERVILLE GHOST.

ri Sainath Nagar , Tirupati – 51 02

Subject : Mathematics Class: XI

Topic: ( Practice Questions) Holiday Assignment

Answer the following:

1.Prove that 12)12)(12(

1.........

7.5

1

5.3

1

3.1

1

n

n

nn

2. Prove that )2)(1(

1............

5.4.3

1

4.3.2

1

3.2.1

1

nnn

3. Prove that 55.37.2 nn is divisible by 24.

4. Prove that 3

)12)(12()12(..................531 2222

nnnn

5. Prove that ...........9

71

4

51

1

31

2

121

n

n = 21n

6. Prove that 110 12 n is divisible by 11.

7. 1+4+7+…………..+ ( 3n – 2) = 132

1nn

8. Prove that

1

1............. 132

r

raarararara

nn

9. For any natural number n, nn 27 is divisible by 5. Prove it by mathematical

Induction.

10. Prove that 1.2 +2.3+3.4+4.5+……………….+ n(n+1) =

3

21 nnn .

Evaluate :

1.

2.

3.

4.

5.

Solve the following:

1. Evaluate the left hand and right hand limits of the function defined by

f ( x ) =

2. If f ( x ) = then show that

exists.

3. Find the derivative of x3 – 64 from first principle.

4. Find the derivative of x2sin using first principle.

5. Differentiate xx sin3 using product rule.

6. Differentiate with respect to ‘x’, using quotient rule.

7. Differentiate using quotient rule with respect to '' x .

SREE VIDYANIKETHAN INTERNATIONAL SCHOOL

TIRUPATI.

CLASS XI- BIOLOGY WORKSHEET

1. Explain two phases of aerobic respiration?

2. How does exchange of gases takes place in the following organisms:-

(a) Poriferans, coelenterates & flatworms. (b) Earthworms. (c) Arthropods

(d) Fishes, Tadpoles of frog (e) Reptiles, birds & mammals

3. Describe with help of labeled diagram human respiratory system.

4. List the steps involved in pulmonary respiration.

5. How is inspiration & expiration accomplished in human beings?

6. Define the following terms:-

(i) Tidal volume (ii) IRV (iii) ERV (iv) Residual volume

7. Name the apparatus by which volume of air involved in breathing can be

measured.

8. Explain the pulmonary capacities:- IC, FRC, EC, VC & Total lung

capacity.

9. (a) Name the factors that affect the rate of diffusion of gases in the lungs.

(b) Mention the components of the diffusion membrane of human

respiratory system.

10 (a) What percentage of O2 is transported by RBC’s in the blood? What

happens to the remaining O2?

(b) In what form in O2 carried in the blood? What happens to this form

when blood reaches the tissues?

(c) Name the factors that affect the binding of O2 to hemoglobin to form

oxyhemoglobin in the tissue.

11(a) What are three forms in which CO2 is transported in blood? Explain.

(b) How does CO2 gets released into the alveoli.

12(a) where is respiratory rhythm centre located?

(b) How does pneumotaxic centre alter the respiratory rate? Where is it

located in human?

13(a) What is asthma? Explain. (b) What is emphysema? What are its major

causes?

14. What are occupational disorders? Give two examples of such disorders.

15. What is Hill reaction? Explain.

16. Which chlorophyll is termed as universal photosynthetic pigment? 17.

Which type of chlorophyll absorbs 680nm wavelength of light and is

present in photosystem II?

18. Which is CO2 acceptor in C3 plant?

19. Differentiate between chlorophyll a and chlorophyll b.

20. What is photosystem? Which is the pigment that acts as reaction centre?

21. What is photophosphorylation? Where does it occur in the leaves?

22. What is the significance of photorespiration?

23. Which would happen to the rate of photosynthesis in C3 plants if the

CO2 concentration level almost doubles from its present level in

atmosphere?

24. Where does cyclic photophosphorylation take place in the leaves?

Explain the events in sequence. Why is this process called cyclic?

25. What is the law of limiting factors? Explain this with a suitable

example.

26. Describe carbon reactions of the C3 pathway. Does this pathway also

operate in C4 plants?

27. What is C4 pathway? Explain its significance.

28. Tabulate the difference between C3 and C4 cycle.

29. What is PAR? Which light is more active in photosynthesis.

Holiday Home Work

Class: XI Subject: Physics

I. Answer the following questions.

1. Explain briefly the working principle of a refrigerator and obtain an expression for its

coefficient of performance.

2. Explain briefly the principle of a heat pump. What is meant by coefficient of

performance?

3. The temperature T1 and T2 of the two heat reservoirs in an ideal Carnot engine be

1500°C and 500°C respectively. Which of these increasing T1 by 100°C or decreasing

T2 by 100°C would result in a greater improvement in the efficiency of the engine?

4. Describe the working of Carnot engine. Obtain expression for its efficiency

5. When 0.45 kg of ice at 0℃ is mixed with 0.9 kg of water at 55℃ in a container, the

resulting temperature is 10℃. Calculate the heat of fusion of ice. Specific heat

capacity of water = 4186 J kg-1

K-1

.

6. Calculate the work done for adiabatic expansion of a gas.

7. What are the values of Cv and Cp for monoatomic, diatomic and polyatomic gas?

8. Derive an expression for the pressure exerted by an ideal gas.

9. What is a kinetic interpretation of temperature? Briefly explain the kinetic

interpretation of temperature.

10. Explain why water does not freeze at the bottom of the lakes in winter.

11. State and derive Newton’s law of cooling

12. Derive an expression for mean free path.

13. Explain how land breeze and sea breeze take place

14. State and prove Carnot’s theorem

15. What is thermal conductivity? Derive an expression for the same.

SREE VIDYANIKETHAN INTERNATIONAL SCHOOL

CHEMISTRY-XI

WORKSHEET: Hydrocarbons

1. Give IUPAC name of

1-Mark Questions

2. Five the IUPAC name of

3. Give the standard formula of 5-sec-butyl, 4-isopropyldecane.

4. Give the standard formula of 4-tert-butyl, 4-ethyl-2, 2, 5, 5-tetra methyl

hexane.

5. Obtain isobutane from n-butane.

6. n-Hexane

2-Mark Questions

7. Out of 2-Methylpentane and 2, 3-Dimethylpentane which has greater boiling

point and Why ?

8. Give the structure of alkyl halide which when treated with sodium metal in

presence of ether gives (CH3)2CH.CH(CH3)2.

9. Complete :

(i) (ii)

10. Explain :

(i) Staggered form of ethane is more stable than eclipsed form.

(ii)Wurtz reaction is carried out in dry ether.

141

11. Give IUPAC name of

Alkenes

1-Mark Questions

12. Give hybridisation of central carbon in allene (CH2=C=CH2)

13. Name the effect which decide the stability of alkenes.

14. Complete the reaction : CH3—CH=CH2 + HCl

15. Which gas is produced during addition of HBr in alkenes is presence of

peroxides ?

16. Name the reagent to convert CH3—CC—CH3 —

2-Mark Questions

17. Arrange the alkenes in decreasing order of stability.

CH3—CH = CH(CH3), CH2 = CH2, CH3—CH = CH2

18. Complete the reaction CH2 = CH — C = CH2 + O3

|

CH3

19. Complete the reaction :

20.

21. Name the alkene which will yield a mixture of cyclopentanone and propanal

on treatment with O3 followed by reduction with Zn.

22. An alkene on treatment with H—Br in presence of peroxide can generate

two types of free radicals and

Predict the finl product. 23. Explain :

(i) Melting point of cis-2-Butene is lower than that of trans-2-Butene.

(ii) Kharasch/peroxide effect is spontaneous with HBr only.

3 Mark Questions

24. Complete the reactions :

(i) (CH3)2C = CH—CH3 + hot KMnO4 —

(ii) (CH3)2C = CH.CH3 + cold dil. KMnO4 —

(iii) (CH3)2C = CH.CH3 + HBr

25. Indicate the reagents used to form the following products :

(i) (ii)

(iii)

26. (i) Convert: iso-propylbromide — n-propyl bromide.

(ii) Give IUPAC name of Vinyl chloride.

Alkynes

27. Give IUPAC name of acetylene.

1 Mark Questions

28. Which alkyne would you start with to prepare CH3—CH2—CH2—CO—

CH3 ?

29. Name the reagent used in the following changes :

30. Give the alkyne which produce acetic acid and proponoic acid on treatment

with alkaline KMnO4 at 100°C.

2 Mark Questions

31. Convert : Acetylene Propylene.

32. Convert : Ethylene Acetylene.

33. Obtain :

34. Give the product when 1-methylcyclohexane reacts with :

(i) aq. acidic KMnO4 (ii) O3 followed by Zn/CH3COOH.

143

3 Mark Questions

35. Pent-1-yne (A) (B) (C)

Catalyst

Identity A, B and C compounds and give their reactions.

Benzene

1 Mark Questions

36. Who discovered benzene ?

37. Give reason whether is aromatic or not.

38. Is pyrrole an aromatic compound or not ? Give reason.

39.

40. Give major product only

+ conc. HNO3 + conc. H2SO4 — ?

41. Give major product only

2 Mark Questions

42. (i) Convert Acetylene — Benzene

(ii)

43. Distinguish chemically butyne and but-2-yne.

44. (i) Planar, cyclic, conjugated compounds with (4n + 2) e– are knows

as ...... .

(ii) Planar, cyclic, conjugated compounds with (4n) e– are knows as ...... .

3 Mark Questions

45. Convert: Ethylene — Nitrobenzene.

46. Give chemical tests to distinguish the following :

(i) Pent-1-yne and pent-2-yne

(ii) Ethylene and Acetylene

(iii) Ethane and Ethylene

47. Complete the following reactions :

(i) CH3COONa + NaOH —

(ii) iso-butyl bromide + alc. KOH —

(iii) iso-butyl alcohol + conc. H2SO4

(iv) (CH3)2C = CH.CH3 + HBr

(v) + H2O

(vi) (CH3)2C==CH2 + cold dil. KMnO4 —

(vii) (CH3)2C==CH.CH3 + hot KMnO4 —

(viii) (CH3)2C==CH.CH3 + O3

(ix) + 2 alc. KOH —

(x) CaC2 + H2O —

(xi) CHCl3 + Ag —

(xii) CH —CCH + H O

H+

3 2 Hg2+

(xiii) CH3—CCH2CH3 + O3

(xiv) CH3CCH + alc. KMnO4

(xv) C6H6 + H2

48. Conversions :

(i) Ethane Ethyne

(ii) Acetylene But-2-yne

(iii) Propene Propanol

145

(iv) Acetic acid Methane

(v) Acetylene Acetone (CH3COCH3)

(vi) Acetylene Cyclohexane

49. A hydrocarbon (X) on treatment with ammonical AgNO3 gave white

precipitate. On treatment with water in dil. H2SO4 and HgSO4, it gave

CH3—CHO. When (X) is treated with 1mol of NaNH2/NH3, along with

n-propyl bromide, gave compound (Y), which on treatment with Lindlar’s

catalyst gave (Z) compound (Z) on treatment with O3 along with Zn gave

HCHO and butanol. Identify X, Y, Z and givel all the reactions.

50. An alkyl halide C5H11Br(A) reacts with alc. KOH to give on alkene (B)

which reacts with Br2 to give compound (C), which on dehydrobromination

gives an alkyne (D). On treatment with sodium metal in liquid ammonia,

one mole of (D) Give one mole of sodium salt of (D) and half mole of H2(g).

Complete hydrogenation of (D) yields a straight chain alkane. Identify A, B, C and D. Give the reaction involved.

51. The sex attractant pheromme of codling moth has the molecular formula

C13H24O. On catalytic reaction this compound gives 3-Ethyl-7-methyl-1-

decanol having molecular formula C13H28O. On reduction ozonolysis the

pheromme produces 2-pentane, 4-ketohexanal and 2-Hydroxyethanal. On

the basis of these information, Write the structure of this pheromme.

52. 896 ml of a hydrocarbon (A) having 87.80% C and 12.19% H weights 3.28

g at STP. Hydrogenation of (A) gives 2-methylpentane. Also compound (A)

on hydration in presence of H2SO4 and HgSO4 gives Ketone (B) having

molecular formula C6H12O. The ketone (B) gives a positive iodoform test.

Find the structure of (A) give all reactions.

[Hint : (i) 1 mole of a compound at STP contains 22400 mL volume

(ii) Ketones having structures gives positive iodoform test]

53. (a) Compound A{C10H18O} undergo reaction with H2SO4 at 250°C to yield

a mixture of two alkenes {C10H16}. The major alkene product (B) gives

only cyclopentanone after ozone treatment followed by reduction with Zn

in CH3COOH. Identify (A) and (B) give the reactions involved.

(b) Convert PhCCH — PhCC.CH3

(c) Benzene does not give addition reactions under normal conditions.

Sree Sainath Nagar,Tirupati – 517102

Holiday Assignment- (2017- 18)

Name: Section:A&B

Class: 11 Subject: IP

1.

2.