/india-vs-pakistan.

india-vs-pakistan.

sachin-tendulkar-man-who-became-god.

sachin-tendulkar-man-who-became-god

india-vs-england-2012-2nd-t20i-preview.

india-vs-england-2012-2nd-t20i-preview.

sehwag-gambhirs-smug-overconfidence.

sehwag-gambhirs-smug-overconfidence.

all-proteas-players-to-be-given-game.

all-proteas-players-to-be-given-game.

Sunday, February 24, 2013

Virat Kohli out for 107


1st Test: Virat Kohli out for 107, India five down


1st Test: Kohli out for 107, India five down
1st Test: Kohli out for 107, India five down
New Delhi: India’s young talent Virat Kohli played a matured knock and slammed century against Australia before being dismissed on the third day of the first cricket Test on Sunday.
LIVE SCORECARD: INDIA VS AUSTRALIA
Kohli played a matured innings and faced199 balls to reach his hundred. The 24-years old displayed some excellent cricketing shots and smashed 16 boundaries. He was caught at mid-on on a tricky ball from Australia’s key turner Nathan Lyon.
Indian skipper Mahendra Singh Dhoni also played a captain's knock and smashed a quick half-century against Australia. Dhoni faced just 59 balls to reach his 29th Test fifty.
Sachin Tendulkar missed out on a century but India scored at a brisk pace to reach 263 for four in their first innings at lunch on the third day of the first cricket Test.
At the break, Virat Kohli and skipper Mahendra Singh Dhoni were holding fort for the home side which is not very far from Australia's first innings total of 380.
   
Tendulkar was the only Indian to be dismissed this morning but scoring remained unaffected asDhoni and Kohli dropped anchor to put the home side in a comfortable position. 
   
Australian skipper Michael Clarkeopened the bowling with tearaway pacer James Pattinson, who had taken all three of the Indian wickets to fall yesterday, hoping to get a quick breakthrough.
   
Pattinson bowled five overs in his first spell, gave away just six runs and asked quite a few questions from the set batsmen but could not get a wicket. His second spell lasted merely two overs.
   
Similar was the case of Peter Siddle, who was economical but just could not get a wicket in both his spells.
   
After Pattinson and Siddle could not get a wicket in their opening spells, Clarke changed the bowlers on both the ends, bringing in off-spinner Nathan Lyon and seamer Mitchell Starc.
   
Lyon, against whom Tendulkar had survived a close leg-before shout on Saturday, delivered when he dismissed the well-set veteran.
   
Tendulkar was on 81 and looked good for a hundred but Lyon denied him the milestone. The Australian tossed a delivery outside the off-stump in the 64th over which took a faint inside edge from Tendulkar's bat before spinning through to the stumps.
   
Tendulkar faced 159 deliveries during the knock, which was laced with seven fours. The right-hander had shared a 91-run stand with Kohli during his stay at the crease. 
   
In came Dhoni, promoting himself ahead of all-rounder Ravindra Jadejawho has scored three triple-centuries in first-class cricket. He was hardly tested as the home team touched the 200 mark in 64.2 overs.
   
At the other end, Virat Kohli sailed along combining caution with aggression. One of the highlights forKohli, who showed patience by waiting for the loose deliveries, was a six off Lyon over midwicket.
   
His stroke-making became more fluent as the session progressed and he seemed hardly troubled by any of the bowlers that Australia employed.
   
Dhoni, on the other hand, reached 37 off 42 deliveries including four fours.
Teams:
   
India:
 MS Dhoni (c), Virender Sehwag, Murali Vijay, Cheteshwar Pujara, Sachin Tendulkar, Virat Kohli, Ravindra Jadeja, R Ashwin, Harbhajan Singh, Bhuvneshwar Kumar, Ishant Sharma. 
   
Australia: 
Michael Clarke (c), David Warner, Ed Cowan, Phillip Hughes, Shane Watson, Matthew Wade (wk), Moises Henriques, Peter Siddle, Mitchell Starc, James Pattinson, Nathan Lyon
.

Wednesday, February 20, 2013

Math sample paper for exam 2013


Sample Paper – 2014
Class – XII
 Subject –
Mathematics

SECTION A ( 1X10=1M)
(Questions 1 to 10 carry 1 mark each)
1.       Let * be the binary operation on N given by a *b = HCF of a and b. Find 20*16
2.       What is Sin-1(Sin 7Ï€/6) ?  
3.       Find x and y if =
4.       If A is a square matrix of order 3 and  = 64 then find .
5.       Find
6.       Find the adj A of  .
7.      
8.       Find the value of  α so that   = αi + 2j + k is perpendicular to  = 4i – 9j +  2k
9.       Find the unit vector in the direction of if
10.    Find k if the lines and are perpendicular.
SECTION B(Q. 11 to 22 carry 4 marks each)

11.   Show that the relation R on NXN defined by ( a,b) R (c,d) a+d= b+c is an equivalence relation.     (or)
 Let f : R R                be a function defined by f(x) = 4 + 3x . Show that f is invertible and find the inverse of f.
12.   Prove that   tan-1 (     -   )/+) = Ï€/4 – ½ Cos-1x                    .              
13.               Using properties of determinants Prove that     = 4.              
14.         Test the continuity of the following function at x = 0 ,
                If x =  a ( t + Sint ) , y = a ( 1 – Cost ) , show that y’’ = 1/a, at t=   ( or ) If  xp y q = ,Prove that y’ = y/x.
15.   Find the intervals where the function f (x) =2x3 – 9x2 + 12x + 30 is a) increasing b) decreasing.
16.   Evaluate: 
 (or)
  Evaluate as sum of limits
17.   Solve the differential equation  x2y’ = x2-2 +xy
 ( or)
  Form the differential equation representing the family of ellipses having foci on x-axis and centre at the origin.
Solve the differential equation   Cos2x y’ + y = tanx.
                                                                                                                                                                                                                          i.       
18.   Three vectors  ,    satisfying  the condition   ++  = 0 . Evaluate the quantity  +    +   if  = 1 ,  = 4 = 2.
19.   Find the shortest distance  between the lines  =   I + j + K ( 2i – j + k ) and  = ( 2i + j  - k ) + p( 3i -5j+2k).
20.   In a factory which manufactures bolts, machine A, B and C respectively 25%, 35% and 40% of the bolts, Of their output s 5,4,and 2 percent are respectively defective bolts. A nolt is drawn random from the product and is found to be defective. What is the probability that it is manufactured from machine A?                                                                                                                              SECTION C ( Each question carries 6 marks)
21.   Find the inverse of  using elementary transformation.  ( or)  if  A =  find A-1 and hence solve the equations  2x+3y+z= 11, -3x+2y+z=4,                                                                                              5x-4y-2z = -9
24 .Find the maximum  area of the isosceles triangle inscribed in an ellipse  x2/a2 + y2/b2= 1, whose vertex lies along the major axis. (or)   Show that the maximum value of the cylinder which can be inscribed in a sphere of radius 5 is 500Ï€ cm3.
25.Prove that
26. Make a rough sketch of the region given below and find its area using integration.  { (x,y) : 0≤y≤2x+3,}.
27. Find the foot of the perpendicular and the perpendicular distance of the point (3,2,1) from the plane   2x-y+z +1=0. Find the image of the point in the plane.
28. From a lot of 30 bulbs which includes 6 defective, a sample of 4 bulbs is drawn at random with replacement. Find the mean and variance of the number of defective bulbs.
29. A furniture firm manufactures chairs and tables each requiring the use of three machines A,B and C . Production of the chair requires 2 hrs on machine A, 1 hr on machine B, and  1 hr on machine C.Each table requires  1 hr on machine A, 1 hr on machine B and  3 hrs on machine C. The profit obtained   by selling one chair is Rs. 30 while by selling one table Rs. 60. The total time available per week on machine A is 70 hrs,  machine B 40 hrs, and on machine  C 90 hrs. How many chairs and tables should be made per week so as to maximize profit? Formulate the problem as LPP and solve it graphically.                                                                                                                                                                                                               

CBSE Problem Solving Assessment (PSA) 2013- CBSE PSA grade IX Answer keys

Answer keys.
Section A (English)
1-4, 2-3, 3-1, 4-3, 5-2, 6-4, 7-4, 8-2, 9-1, 10-2, 11-1, 12-4, 13-2, 14-2, 15-1, 16-3, 17-3, 18-4, 19-2, 20-2, 21-1, 22-1, 23-2, 24-2
Section B (Qualitative Reasoning)
25-3, 26-3, 27-4, 28-1, 29-2, 30-1, 31-4, 32-3, 33-4, 34-4, 35-4, 36-2, 37-4, 38-1, 39-4, 40-1, 41-4, 42-2,
Section C (Quantitative Resoning)
43-3, 44-3, 45-2, 46-2, 47-2, 48-1, 49-4, 50-4, 51-2, 52-3, 53-1, 54-2, 55-4, 56-3,57-4, 58-2, 59-2, 60-1
Our team is discussing the rest of the answers. Your patience will be highly appreciated.
On the contrary, the answers may not be 100% correct. The candidates are requested to discuss the answers in the comments. Scanned Question Paper will be added soon.
NOTE The answers Ticked in the Question Paper mostly differ from the correct answers. In order to provide you the Answer keys at the earliest possible there were some obstacles to the answers. We

Post titleCBSE PSA Result 2013 conducted on 16 Feb 2013

Post titleCBSE PSA Result 2013 conducted on 16 Feb 2013
Language Conventions:
Hindi: 1.3, 2.3, 3.2, 4.2, 5.1, 6.3, 7.4, 8.2, 9.1, 10.2, 11.3, 12.3,  13.1, 14.4, 15.2, 16.3, 17.2, 18.4, 19.3, 20.3, 21.4, 22.2, 23.1, 24.2
English: 1.4, 2.1, 3.1, 4.2, 5.2, 6.3, 7.3, 8.1, 9.2, 10.2, 11.4, 12.2, 13.3, 14.2, 15.2, 16.4, 17.1, 18.2, 19.3, 20.2, 21.2, 22.4, 23.1, 24.2
Qualitative Reasoning: 25.4, 26.3, 27.4, 28.2, 29.3, 30.4, 31.3, 32.4, 33.3, 34.2, 35.1, 36.2, 37.4, 38.4, 39.2, 40.4, 41.2, 42.2
Quantitative Reasoning: 43.5, 44.2, 45.2, 46.3, 47.1, 48.1, 49.3, 50.4, 51.1, 52.2, 53.4, 54.2, 55.2, 56.3, 57.4, 58.3, 59.4, 60.1
These answers may or may not be absolutely correct. Readers are encouraged to discuss their answers in the comments below.CBSE (Central Board of Secondary Education) conducted the Problem Solving Assessment Test (PSA) on 16th Feb 2013 for classes IX and XI. A lot of candidates appeared in the exam and are now waiting for the answer key of PSA 2013.  Candidates who has appeared in the the PSA test can download the answer key of PSA exam as soon it is released by authentic sources.CBSE initiated the Problem Solving Test as an attempt to replace the FA’s (Formative Assessments) of classes IX and X and to prepare students of Classes XI and XII for competitive exams. Candidates who attempt this test will be awarded a certificate in mid-June, but reports are unconfirmed as yet
Links to download answer key will be added by today. With the help of answer key, candidates can calculate their marks.

Sunday, February 17, 2013

OLOGY QUESTION FOR CLASS 12 FIOR EXAM 2013



















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