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CTET January 2012 Result Declared on 6th March 2012

CBSE has declared CTET January 2012 result on 6th March 2012. Students can get their result from CBSE official site using the link below : CTET 2012 Result Most of the candidates are unable to pass it. The result is about 7% this time. CBSE conducted first CTET exam in June 2011. The  result was about 8%. This year it is less than that of previous year. About 8 lakhs teachers appeared in the exam but only 55,422 candidates could manage to get qualifying marks.

CBSE class 9 Atom and Molecules practice Mole concept

Atoms and molecules Sample Test Paper Time 1 hr M.M.35  (Section A) 10 x 1 = 10 1. The atomic radius of hydrogen atom is a. 0.037 nm b. 0.037 x 10 -9 m c. both a &b d. none 2. Complete the following sentence : In water, the proportion of hydrogen and oxygen is ---------- by mass a. 1:8 b. 3:4 c. 9:0 d. none 3. The actual mass of hydrogen atom  a. 1.673 x 10 -24 g b. 1.673 x 10 c.1u d. both a & b 4. The symbol of cobalt a.C.o. b. CO c. Co. d. none 5. Atomicity of noble gases is one  a. True b. false c. can‟t say d none 6. The molecular mass of sulfuric acid a. 28 u b. 108 u c. 98u d. none 7. What are the number of electron and proton in chlorine ion a. 17p & 18 e b. 18 p & 17 e c. 17 e & 0 e d. none 8. The value of symbol „L‟ a. 6.022 x 10 23 b. 6.022 x 10 -23 c. 0.622 x 10 23 d. none 9. What is the mass of of 0.2 moles of oxygen atoms? a. 2.3 g b. 3.2 g c. .32 g d. none 10. Write the atomicity of CO2 gas a. 2 b. 3 c. 0 d. none (Sect

Summative Assessment-II Class X Mathematics Code 30/3 series BRH 2012

Solved question Paper CBSE BOARD SA-II By JSUNIL TUTORIAL Section – A 1. In fig. AP, AQ and BC are tangents to the circle . If AB = 5 cm , AC = 6 cm and BC = 4cm then length of AP is ( in cm) (A) 7.5 (B) 15 (C) 10 (D) 9  Ans: (A) 7.5 2. A solid right circular cone is cut into two part at the middle of its height by plane parallel to its base. The ratio of volume of the smaller cone to the whole cone is (A) 1:2 (B)1:4 (C) 1: 6 (D) 1: 8 Ans: (D) 1: 8 3. A kite is flying at height of 30m from the ground. The length of string from the kite at the ground is (A) 450 (B)300 (C)600 (D)900 Ans: (B) 4. In fig. P(5,-3),q(3,y) are the points of trisections of the line segments joining A(7,-2) and B(1,-5)Then y equals (A) 2 (B)4 (C)-4 (D)-5/2 Ans: (C)-4 5. Card bearing numbers 2,3,4--------------,11 are kept in a bag . A card is drawn at random from the bag . The probability of getting a card with prime number is (A) 1/ 2 (B) 2/5 (C) 3/10 (D) 5/9 Ans: (A) 1/ 2 6. The dist

9th Physics Solved Numerical Floating bodies ( Gravitation) Term-2

Q. a cube of mass 1kg with each side of 1cm is lying on the table. find the pressure exerted by the block on the table. take g=10 m/s 2 Ans: Pressure is given as force/area  so, Force, F = mg = 1000 X 1000 gm.cm/s 2 and   area, A = 1x1 cm 2  = 1 cm 2 T hus, the pressure exerted would be P = (1000 X 1000) / 1 or P = 1 x 10  6  pa Q. The mass of a solid iron cube of side 3cm is to be determined usig a spring balance. If the of iron is approximately 8.5 g/cm 3 , the best suited spring balance for determining weight of the solid would be of  1. range 0-250gwt ; least count 1gwt              2. range 0-250gwt ; least count 5gwt 3. range 0-1000gwt ; least count 5gwt            4.  range 0-1000gwt ; least count 10gwt Ans: Edge=3 cm ,  Density=8.5 g/cm 3 Mass=  density x volume = 8.5 x(3x3)=229.5gwt Therefore second spring balance of range 0-250 gwt with least count 5gwt will be suitable. Q. The density of turpentine oil is 840 Kg/ m3. What will be its relati