SCHOLASTIC APTITUDE TEST (SAT) HINTS & SOLUTIONS

Transcription

1 NATIONAL TALENT SEARH EXAMINATION-08, RAJASTHAN NATIONAL TALENT SEARH EXAMINATION-08, RAJASTHAN SHOLASTI APTITUE TEST (SAT) HINTS & SOLUTIONS. onstant speed means equal distance in equal interval of time. In graph (A) and graph () slope is constant. Recoil velocity 3 mv 50 V M.5 m/s Ans (3) 3. h u.(i) 0 u.(ii) h (u).(iii) 3 h 4u 0 u h 400 GM 4. Acceleration due to gravity (g) R Universal gravitation constant G g M G R 5. frequency timeperiod Hertz sec 6. frequency (n) Khz 3 Hz 3mm 3 3 m V n V V 30 m/s V T T sec. Size of Image size of object image will be formed at centre of curvature. 8. F 30 cm u 5cm m V u f + V V orporate Office : G Tower, A-46 & 5, IPIA, Near ity Mall, Jhalawar Road, Kota (Raj.) Head Office: Plot No. A-5 [A], IPIA, Near Resonance G Tower ontact : Toll Free : IN: U8030RJ00PL0409 NTSE STAGE-I-08 PAGE-

2 NATIONAL TALENT SEARH EXAMINATION-08, RAJASTHAN V 30 V 30 v M + u P k Resistivity does not depend on length and area.. A W W W 3W W W W Req No.of appliance power (watt) time(hours) energy (KWH) KWh 00 ost of electricity Rs.. According to snow rule deflection at point A and the needle will deflect but in opposite diretion. 3. When light goes from rarer to denser medium it bends towards the normal. 4. (3) Hl loses its H + ion & gives a species l - which act as a conjugate base. Hl + H O l - + H 3 O + (Acid) (ase) (onjugate (onjugate acid of H O) base of Hl) 5. (3) As per the theory Plaster of Paris is aso 4. ½ H O 33K aso 4.H O aso 4. ½ H O 6. () hloroform on oxidation form phosgene gas which is toxic, therefore to deaccelerate the reaction we pour ethanol solution so that this reaction does not occur. (4) Lithium Metal Sodium Metal Sulphur Non Metal Silicon Metalloid orporate Office : G Tower, A-46 & 5, IPIA, Near ity Mall, Jhalawar Road, Kota (Raj.) Head Office: Plot No. A-5 [A], IPIA, Near Resonance G Tower ontact : Toll Free : IN: U8030RJ00PL0409 NTSE STAGE-I-08 PAGE-

3 NATIONAL TALENT SEARH EXAMINATION-08, RAJASTHAN () 3 H3 H 3 H methyl -- propene. (Numbering start from double bonded carbon.) 9. (4) Nylon-66 formed by the condensation of adipic acid and hexamethylene diamine. NH ( 4 H ) + H ) ( 6 OOH NH O ( H ) 4 NH (H ) 6 NH O n + nh O 0. () On heating ammonium chloride is sublime while sodium chloride not. So sublimation is the suitable method to separate sodium chloride and ammonium chloride.. () 8 gram Nitrogen (N ) contain molecules gram N contain 4 8. () Atomic number of sulphur 6 K L M Electonic configuration molecule 3. (3) Elements of d block show more than one valency. Iron (Fe) show variable valency because it is a d- block element. Iron shows & 3 valency i.e. Fe + (ferrous) and Fe +3 (ferric) 4. () Al (O 3 ) 3 Al O hemical formula of aluminium carbonate. 5. () Freon F l 4 Nomenclature of freone : - Freon - XYZ X number of carbon atom - Y number of H atom + Z number of F atom F l 4 X Y 0 + Z Freon orporate Office : G Tower, A-46 & 5, IPIA, Near ity Mall, Jhalawar Road, Kota (Raj.) Head Office: Plot No. A-5 [A], IPIA, Near Resonance G Tower ontact : Toll Free : IN: U8030RJ00PL0409 NTSE STAGE-I-08 PAGE-3

4 NATIONAL TALENT SEARH EXAMINATION-08, RAJASTHAN () Mg is metal which forms ionic compound with l which has high melting point. Mg + l Mgl a b a 3 b a 3 b a 3 b a 3 b 4. 0 p 4() (8) 0 p 64 p 8 px + px + k 0 0 p 4(p) k 0 p 4k 0 4k 8 k. 43. x px p k b + p p k p p k + 6 k End digit of End digit 5 5 Answer x+40 T x Q R S P + Q + R 80 x x 30 x 5 orporate Office : G Tower, A-46 & 5, IPIA, Near ity Mall, Jhalawar Road, Kota (Raj.) Head Office: Plot No. A-5 [A], IPIA, Near Resonance G Tower ontact : Toll Free : IN: U8030RJ00PL0409 NTSE STAGE-I-08 PAGE-4

5 NATIONAL TALENT SEARH EXAMINATION-08, RAJASTHAN ,9,8,... 4 T n < (n ) 4 < 0 3(n ) 0 < n + 3 < 0 3n > 83 n > 3 n q q q 90 q 6 x A ~ A A A A A A A 6 x x 6 x 9 m 48. (m + n ) cos cos A cos A cos cos sin cos A cos cos cos A sin cos sin cos A sin (sin + cos cos A ) sin n. h h 49. E A ~ EF h h 4 9 ar( A) h ar( EF) h 6 : 8. F orporate Office : G Tower, A-46 & 5, IPIA, Near ity Mall, Jhalawar Road, Kota (Raj.) Head Office: Plot No. A-5 [A], IPIA, Near Resonance G Tower ontact : Toll Free : IN: U8030RJ00PL0409 NTSE STAGE-I-08 PAGE-5

6 NATIONAL TALENT SEARH EXAMINATION-08, RAJASTHAN O P 90 6 O 8 A 6 A Sides,, P a 9, a, a 5, a 3, a, a +, a + 3, a + 5, a +, a + 9. mean a a. 5a 5 mean of first five number a P Area of sector (A) Area (A). () Area of segment (P) 5 50 So, area of shaded region (5 50) unit. 53. h 4, r cm, r cm Volume 3 (r + r + r r ) h (4 + + ) cm : 3 P 3, 33 ( 5 5 ) (x,y) 3 5 x 9 3 x x x y 5 And y y 8 y orporate Office : G Tower, A-46 & 5, IPIA, Near ity Mall, Jhalawar Road, Kota (Raj.) Head Office: Plot No. A-5 [A], IPIA, Near Resonance G Tower ontact : Toll Free : IN: U8030RJ00PL0409 NTSE STAGE-I-08 PAGE-6

7 NATIONAL TALENT SEARH EXAMINATION-08, RAJASTHAN In leap year there are 366 days which contains 5 weeks + days. 5 weeks contains 5 mondays and the remaining days can be (M, T), (T, W), (W, Th), (Th, F), (F, Sat), (Sat, Sun), (Sun, M) So there are possibility for days. out of which of the cases our favorable cases. So required probability. 56. r d + 60 r r + 60 r( ) r ( ) 30. ircumference r. (30) G E G is median ar (G) ar (G) ar(ag) ar (GE) ar (EG) ' r A 4r r 0.5 r 3 4 r c 360. A 4r r 36 6 r A A A r % ecrease in surface area 60. Let a x y b y z c z x a + b + c x y + y z + z x 0 8 r 6. 8 r r % a 3 + b 3 + c 3 3abc (x y) 3 + (y z) 3 + (z x) 3 3(x y) (y z) (z x). orporate Office : G Tower, A-46 & 5, IPIA, Near ity Mall, Jhalawar Road, Kota (Raj.) Head Office: Plot No. A-5 [A], IPIA, Near Resonance G Tower ontact : Toll Free : IN: U8030RJ00PL0409 NTSE STAGE-I-08 PAGE-

8 NATIONAL TALENT SEARH EXAMINATION-08, RAJASTHAN orporate Office : G Tower, A-46 & 5, IPIA, Near ity Mall, Jhalawar Road, Kota (Raj.) Head Office: Plot No. A-5 [A], IPIA, Near Resonance G Tower ontact : Toll Free : IN: U8030RJ00PL0409 NTSE STAGE-I-08 PAGE-8

9 NATIONAL TALENT SEARH EXAMINATION-08, RAJASTHAN orporate Office : G Tower, A-46 & 5, IPIA, Near ity Mall, Jhalawar Road, Kota (Raj.) Head Office: Plot No. A-5 [A], IPIA, Near Resonance G Tower ontact : Toll Free : IN: U8030RJ00PL0409 NTSE STAGE-I-08 PAGE-9