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  #2  
Old July 4th, 2013, 10:02 AM
Shreyansh P
Senior Member
 
Join Date: May 2013
Posts: 7,468
Default Re: Class 11 non medical question papers

As per your need here I am giving sample questions of class 11th Physics:

1. If a composite physical quantity in terms of moment of inertia I, force F, velocity V, work W and length L is defined as, Q = (I F V2 /WL3)
Find the dimension of Q and identify it.

2. Explain why a man who fall from a height on a cemented floor receive more injury then when he fall from the same height on the heap of sand.

3. Is it possible to have a collision in which all the kinetic energy is lost? If so cite an example.

4. You are given two spheres of the same mass, size and appearance, but one of them is solid while the other hollow. If they are allowed to roll down an incline which One will reach the bottom first?

5. Can every oscillatory motion be treated as simple harmonic motion in the limit of small amplitude?

6. If the earth be at one half its present distance from the sun how many days will their be in a year?

7. A 25 cm long tube closed at one end is lowered with his open end down into a fresh water lake. If one- third of the tube is filled with water then what is the distance between the surface of lake and level of water in the tube.

8. Why zeroth law of thermodyamics is not called as IIIrd law though it was discovered after I and II law?


9. Define uniform velocity of an object moving along a straight line. What will be shape of velocity time and position time graphs of such a motion?

10. What do you mean by a projectile? A projectile is fired with velocity v making an angle Ө with the horizontal. Show that its path is parabolic.

11. Define the term momentum and impulse also derives the relation between them.

12. Define and explain moment of inertia of a rigid body about an axis of rotation. Hence define radius of gyration.


13. What do understand by gravitational field and gravitational field intensity? Show that acceleration due to gravity is a measure of the gravitational field of earth at a point.

14. Define escape velocity. Derive an expression for escape velocity of an object from the surface of a planet.

15. Explain terminal velocity and mention its importance. Derive stokes law dimensionally.

16. State newton’s law of cooling. Deduce the relation
log (Ө- Ө0) = - k t + c

17. Give the essential features of the kinetic theory of gases. Show that the pressure exerted by a gas is equal to two-thirds of the average kinetic energy per unit volume of the gas molecule.


18. What are centripetal acceleration and centripital force? Derive expression for them.

19. What is elastic collision? Calculate the velocities of the two bodies undergoing elastic collision in one dimension.

20. Show that the acceleration of free fall g at the surface of earth and the gravitational constant G are related by the expression
g = 4\3 Π p G R,

21. State the conditions, which are necessary for a satellite to appear stationary. Show how an satellite orbiting round earth obey Kepler’s third law.

22. In a refrigerator, heat from inside at 277K is transferred to a room at 300K. How many joule of heat will be delivered to the room for each joule of electrical energy consumed ideally?

23. Find the maximum length of a steel wire that can hang without breaking.
Given that breaking stress for steel = 7.9 x 1011 N M-2 and density of steel =7.9 x
103 Kg M-3


24. The weight of a body in water is one third of its weight in air. What is the density of the material of the body.

25. What is stokes law? Explain terminal velocity and mention its importance

26. Show that for a carnot engine, efficiency of the engine is >
η = 1- T2/T1 (T2 > T1)
Where T1 is the temperature of the source and T2 is the temperature of the sink.


27. Define angular momentum for a system and show that
Angular momentum = Linear momentum x Perpendicular distance from axis of rotation.

28. Define young’s modulus of elasticity, normal stress and longitudinal strain. Give units of each of them. Derive elastic potential energy of a wire when stretched.

29. A body of mass 1 Kg initially at rest is moved by a horizontal force of 0.5 N on a smooth friction less table. Calculate the work done by the force in 10 S and show that it is equal to the change in kinetic energy of the body.

30. If the orbital velocity of moon is increased by 42% than what will happen to its position? Explain.

31. Show that torque is the product of moment of inertia and angular acceleration. Also prove that torque is the rate of change of angular momentum. Hence state the law of conservation of angular momentum.

32. Establish Bernoulli’s equation for liquid flow, stating separately the assumption made. What does the equation essentially represent?

33. What should be the average velocity of water in a tube of diameter 0.4 Cm, so that the flow is (a) laminar, (b) turbulent. The viscosity of water is 10-3 N M-2 S

34. What is Doppler Effect? Derive an expression for the apparent frequency of sound due to Doppler effect in the following case:
(a) When the listener moves towards the stationary source.
(b) When the source moves towards the stationary listener.

35. Two notes of wavelength 2.04 metres and 2.08 metres produce 200 beats per minute in a gas. Find the velocity of sound in the gas.

36. State Newton’s formula for velocity of sound in gases. Discuss Laplace correction. What is the effect of density and pressure and temperature on velocity of sound in air? Explain.

Here I am attaching a PDF for more questions:

Quote:
Originally Posted by Unregistered View Post
Would you provide me the Class 11 Physics questions?
Attached Files Available for Download
File Type: pdf (Sample Question paper of Maths and Physics).pdf (103.5 KB, 16 views)
File Type: pdf (MATHS solved question paper of Resonance).pdf (481.3 KB, 16 views)
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  #3  
Old January 12th, 2015, 03:55 PM
AdityaV
Super Moderator
 
Join Date: Apr 2013
Posts: 28,553
Default Re: Class 11 non medical question papers

Here I am giving you previous years question papers of class 11 Non Medical (Physics, Chemistry and Mathematics)
Class 11 Chemistry Question Paper
Q1 How are 0.50 mol Na 2CO3 and 0.50 M Na2CO3 different?
Q2 How many subshells are present in M shell?
Q3 Which property of element is used to classify them in long form of periodic table?
Q4 Write resonance structure of Ozone or sulphurdioxide.
Q5 Write conjugate base for water and NH4+ species.
Q6 What do you understand by Hydrogen economy?
Q7 Find out oxidation number of chromium in K2Cr2O7 molecule
Q8 Indicate sigma and pie bonds in CH2=C=CH2. 1 X 8 = 8 Marks

Q9 Calculate number of photons with a wavelength of 3000pm that provides 1 Joule of energy. 2 Marks
Q10 Explain why bond angle in NH3 is more than in H2O molecule though both have sp3 hybridization. 2 Marks
Q11 At constant temperature if the pressure of a fixed mass of gas is doubled what happens to its volume ? Which law governs this behavior of gases? 2 Marks
Q12 How many grams of oxygen is required for complete combustion of 29g of butane as per the equation C4H10+ 4.5O2=2CO2+5H2O 2 Marks
Q13 Calculate bond order of oxygen molecule. List all the information provided by the bond about this molecule. 2 Marks
Q14 Calculate the total pressure in a mixture of 16 g of oxygen and 4g of Hydrogen confined in a vessel of 1dm-3 at 27 degree celsius. (Molar mass of oxygen 32 Hydrogen 2 R= 0.083bar dm3 K-1mol-1) 2 Marks
Q15 Balance following equation in acidic medium showing all steps,
Br2 + H2O2- BrO2 + H2O 2 Marks
Q16How are silicones prepared? Write necessary reaction. Write two uses of silicones.
2 marks
Q 17 What is demineralised water? How is it obtained? 2 Marks
Q18 What is the reason of diagonal relationship of elements? Write two properties of any two diagonally related elements.
Or
Give reasons
(1) why alkali metals when dissolved in Liquid ammonia give blue solution?
(2)Beryllium and Magnesium do not impart colour to the flame while other members do.

Q19 (1) State Heisenberg s Uncertainty principle.
(2) Write electronic configuration of Cu metal (Z=29) and Cr3+ ion.
(3)Which orbital is represented by n=4 and l=3? 3 Marks
Q20 Explain why
(1) Halogens act as good oxidizing reagent.
(2)Electron gain enthalpy of inert gases is zero.
(3)Ionization enthalpy of Mg is higher than that of Na. 3 Marks
Q21 (1) What do you mean by Bond Enthalpy?
(2) Calculate bond enthalpy of Cl---Cl bond from following data.
CH4(g) + Cl2 (g)--CH3Cl(g) +HCl (g) ΔH-= --109.3kJ mol-1
Bond enthalpy of C—H Bond = 413kJ, C—Cl Bond =326 kJ and H—Cl Bond =431kJ mol -1 3 Marks
Q22 (1) What are extensive properties?
(2) Write Gibbs free energy equation giving meaning of each term used.
(3) Under what condition Δ U= ΔH ? 3 Marks
Q23Write chemical equation only for preparation of
(1) Plaster of Paris
(2) Quick lime
(3) slaked lime. 3 Marks
Q24 (1) What do you mean by functional isomerism?
(2) What are electrophiles?
(3) What is inductive effect ? Give an example. 3 Marks
Or
(1) Write IUPAC names for C6H5CH2CHO and (CH3)2—CH(NH2)—CH3
(2) Write an example of geometrical isomerism.
(3) What do you mean by electromeric effect? 3 Marks
Q25(1) Draw eclipsed and staggered conformations of ethane.
(2)Write one equation each to show Wurtz reaction and Friedal craft alkylation. 3 Marks
Q26 (1) How nitrogen is detected in an organic compound.?Wrire necessary reactions.
(2) How a molecular formula is different from empirical formula? 3 Marks
Q27 (1) What do you mean by green chemistry?
(2) Explain terms BOD and COD with reference to environmental chemistry. 3 Marks
Q28 (1) For the reaction N2(g) + 3H2 (g)↔2NH3(g) the value of Kp is 3.6 x102-+ 2-2 at 500 K. Calculate the value of Kc for the reaction at the same temperature. R=0.083 bar L K-1 mol-1.
(2) What do you understand by (1) Common ion effect (2) Buffer solution.
3+2 Marks
Or
(1) For the reaction PCl5↔PCl3+Cl2 at 473K the value of equilibrium constant Kc is 8.3 x10-3 (1) Write an expression for Kc (2)What is the value of Kc for reverse reaction at same temperature.(3) What would be effect on Kc if pressure is increased.
(2) State Henry’s Law. Write pH value of 1x10-5 M HCl solution. 3+2 Marks

Q29 Give reasons for
(1)[SiF62]- is known whereas [SiCl6]-2 is not known.
(2) Diamond is a covalent solid, yet it has highest Melting Point. (3) Boric acid is considered a weak base.
(4) BF3 behaves as Levis acid.
(5) CO2 is a gas while SiO2 is a solid at room temperature.
Or
(1) What are fullerenes?-
(2) Why is boric acid monobasic?
(3)What is inert pair effect?
(4)Why is PbCl2 is a good oxidizing reagent?
(5)Write the formula of inorganic benzene.

Q30 (1) State Markovnicoff’s rule. Using this write the reaction of propene with HCl.
(2) Carry out following conversions
(1) Ethyl alcohol to ethane.
(2) Sodium acetanilide to benzene.
(3) Benzene to nitrobenzene. 2+3 Marks
Or
(1) Write two reactions to show acidic nature of ethyne
(2) Complete the following reactions-
ozone/Zn/H2O
(1) CH3—CH=CH2-------------
aquous KMnO4
(2) CH3—CH=CH2----------------------
(3) CH=CH + Br2 water------------


Marking Scheme
SESSION ENDING EXAMINATION
CLASS XI
CHEMISTRY

Q1 Correct meaning ½ +1/2
Q2 Two one s and one p ½ +1/2
Q3 Atomic Number
Q4 Correct structure 1 mark
Q5 Correct answer ½ +1/2
Q6 correct answer 1mark
Q7 +6 1mark
Q8 Sigma 6 pie 2 1mark
Q9 E=hν ½
= 6.626 x10¬¬¬¬-34 x3000x10-¬10 =19.878x 10-41 J 1mark
1/19.878x10-41 = 5.03x 10-39 photons ½ mark
Q10 Correct explanation with correct structure 1+1 mark
Q11 Decreases to half, Boyle’s Law 1+1 mark
Q12 Correct formula ½ mark
Correct values and calculation 1mark
Ans. 2.06 mol/ Kg ½ mark
Q13 correct formula ½ mark
Correct values and calculation 1mark
Correct answer with units ½ mark
Q14 correct bond order 1mark + correct information 1mark
Q15 correct steps 4x1/2 =2
Q16 correct method +correct uses 1+1 mark
Q17 correct reasons 1+1 or correct reason 1mark+ two properties 1mark
Q 18 correct definition + One correct method 1+1 mark
Q19 (1) correct definition 1mark
(2) Correct configuration ½ +1/2
(3) 4f 1mark
Q20 correct answer 1mark each
Q21 correct definition 1mark
∑ Bond enthalpy of reactants - ∑ Bond enthalpy of Products ½ mark
Correct value and calculation 1 mark
Answer 234.7 kJ ½ mark
Q22 Correct answer 1mark each
Q23 Correct method with equation 1mark each
Q24 Correct Answer of each part 1mark each
Q25 Correct Answer of each part 1mark each
Q26 Correct method with equation 2mark
Correct relation 1mark
Q27 correct answer of each part 1mark each
Q28 (1) Correct relation ½ mark, Δ n=-2 ½ mark
Correct value and calculation 1 mark , answer ½ mark
(2) Correct meaning 1mark each
Or (1) Correct answer of each part 1mark each
(2) Correct statement 1mark, pH=5 1mark
Q29 Correct answer of each part 1mark each.
Q30 (1) Correct rule 1 mark , correct reaction 1mark
(2) Correct answer of each part 1mark each
Or
(1) two correct reaction 2 mark
(2) Correct answer of each part 1mark each.

Class 11 Mathematics Question Paper,Class 11 Physics Question Paper detail to atteched pdf file........................
Attached Files Available for Download
File Type: pdf Class 11 Mathematics Question Paper.pdf (320.4 KB, 13 views)
File Type: pdf Class 11 Physics Question Paper.pdf (231.7 KB, 15 views)
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