4. Which of the following organs develops first?

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1 Biology 4. Which of h following organs dvlops firs? (A) Livr (C) Kidny (B) Har (D) Noochord 12. During mbryonic priod, animals rpa mbryonic sags of hir ancsors. This law is calld (A) Flokin s law (B) Biognic law (C) Anaximandr s law (D) Hardy-Winbrg s law 19. Which of h following T-clls ar dsroyd by HIV? (A) Cyooxic T-clls (C) Supprssor T-clls (B) Killr T-clls (D) Hlpr T-clls 27. How many major classs of immunoglobulins ar found? (A) Four (C) Thr (B) Fiv (D) Svn 34. Wha is h corrc squnc of h following vns? (A) 1, 3 and 2 (B) 1, 2 and 3 (C) 3, 1 and 2 (D) 2, 1 and 3 1

2 Physics 43. Paralll bam of ligh is incidn on h sysm of wo convx lnss of focal lngh f 1 = 20 cm and f 2 = 10 cm as shown blow. f 1 f 2 Wha should b h disanc bwn h wo lnss so ha rays afr rfracion from boh h lnss pass undviad? (A) 60 cm (C) 90 cm (B) 30 cm (D) 40 cm 48. Suppos w hav a larg numbr of idnical paricls, vry small in siz. Any of hm a 10 cm sparaion rpl wih a forc of N. If you masur h rpulsion and find i o b N; how many paricls wr hr in h group? (A) (B) (C) (D) How much U 235 is consumd in a day in an aomic powr hous opraing a 400 MW, providd h whol of h mass of U 235 is convrd ino nrgy? (A) g (C) g (B) g (D) g 56. Th variaion of inducd mf () wih im () in a coil if a shor bar magn is movd along is axis wih a consan vlociy is bs rprsnd as : 2

3 (A) (B) (C) (D) 64. Th valu of currn i in h circui shown blow is R 2 = 5 3 V R 1 = 5 R 3 = 5 R 4 = 5 (A) 1.8 A (C) 0.2 A (B) 0.8 A (D) 1.6 A 3

4 Chmisry 68. Th ordr of raciviy of phnyl magnsium bromid wih h following compounds is O O O H C 3 H C 3 Ph (A) (II) > (III) > (I) (B) (I) > (III) > (II) (C) (II) > (I) > (III) (D) All rac wih h sam ra 70. Doping o f silicon wih P or Al incrass h conduciviy. Th diffrnc in h wo cass is (A) P is non-mal whras Al is a mal (B) P is a poor conducor whil Al is a conducor (C) P givs ris o xra lcrons whil Al givs ris o hols (D) P givs ris o hols whil Al givs ris o xra lcrons. 76. Th vapour prssur of a pur liquid A is 40 mm Hg a 310 K. Th vapour prssur of his liquid in a soluion wih liquid B is 32 mm Hg. Calcula h molfracion of A in h soluion if i obys h Raoul s law. (A) 0.3 (B) 0.5 (C) 0.8 (D) Wha may b xpcd o happn whn phosphin gas is mixd wih chlorin gas? (A) h mixur only cools down (B) PCl 3 and HCl ar formd and h mixur warms up (C) PCl 5 and HCl ar formd and h mixur cools down. (D) PH 3.Cl 2 is formd wih warming up. 4

5 90. Wha is h sandard cll ponial for h cll Zn ; Zn 2+ (1M) Cu 2+ (1M) ; Cu? (E o for Zn 2+ / Zn = 0.76 ; E o for Cu 2+ / Cu = ) (A) ( 0.34) = 0.42 V (B) = V (C) 0.34 ( 0.76) = V (D) 0.76 (+ 0.34) = 1.10 V Gnral Awarnss 91. Who has bn prsnd wih h Honourd Gus award by h U.S. sa of Txas for his conribuion o cinma and ar in 2015? (A) Shahrukh Khan (C) Amiabh Bachan (B) Anupam Khr (D) Aamir Khan 93. Aviaion gian Boing is a company of which counry? (A) Ausralia (C) Amrica (B) Russia (D) Japan 94. Which corpora company has a slogan Powrd by inllc. Drivn by valus? (A) TCS (C) Infosys (B) Wipro (D) HCL 96. Who has won Mixd Doubls in h US Opn Tnnis Championship in 2015? (A) Robra Vinci and Simona Halp (B) Nicolas Mahu and Sam Qurry (C) Landr Pas and Marina Hingis (D) Robra Vinci and Nicolas Mahu 97. Nam h youngs singr nry in Forbs mos powrful womn lis (A) Taylor Swif (C) Lady Gaga (B) Rihanna (D) Kay Prry 5