DEEPER KASAUTI (MH-CET) - 2015 R Date : 12th April, 2015 Model Answers with Solutions - Answers are given in brief with reasoning. No reasoning is given, where it is not neceessary. These model solutions are offered exclusively to DEEPER students. No part of this publication may be reproduced or transmitted in any form or by any means, without permission. Any person who does any unauthorised act in relation to this publication, such as photocopying, cyclostyling by way of any electronic or mechanical, magnetic or optical means may liable for the damages, phease not it carefully. PART - A - PHYSICS Q.1 Ans. (D) 1 mw2 A2 2 T. E. = It is same every where. Q.2 Ans. (D) e= dj 1 = wb/sec dt 60 Induced emf e = Q.3 Ans. (D) m C Q = mgh gh 9.8500 = = 1.160C C 4.2103 ΔQ = Q.4 1 V 60 Ans. (C) potential 1 radius V1 r2 16 2r1 = = V2 r1 V2 r1 V2 = 8V Q.5 Ans. (C) (1) Q.6 Ans. (A) mv2 2000 × 10 × 10 Fe = = =104 N r 20 Q.7 Ans. (C) 3.2 × 1.6 × 10-19 K.E. = e Vs = ev = 3.2 eV 1.6 × 10-19 Q.8 Ans. (A) V = n = V 1200 = = 4m n 300 list between node and antinode = Q.9 4 4 = = 1 m 4 4 Ans. (C) A1 = 10 ; A 2 52 (5 3)2 25 75 100 10 A1 10 1 = = =1:1 A 2 10 1 Q.10 Ans. (A) poission's Ratio longiludinal stress = latual strain longitudinal strain = lateral strain longitudinal strain/Y = lateral strain × Y possion's Ratio 10 2 1012 = 100 0.25 = 2 3 1011 = 8 1011 N/m2 (2) Q.11 Ans. (A) M2 = 3M1, R2 = 3R1 2GM R Ve = V1 m1 R 2 = = V2 m2 R1 = m1 3R 1 3m2 R1 = 1 V1 = V2 Ve' = ee Q.12 Ans. (A) λ= h h = m1v1 m2 v 2 V1 m 2 = V2 m1 Q.13 Ans. (B) B1 = B2 = μ 0 2m 4μ 0 M = 3 4π d πd 3 2 μ0 m 2μ 0 M = 4π d 3 πd3 2 B = B12 + B22 20. μ 0M πd 3 2 5. μ 0M πd 3 μ 0M 16 4 πd 3 (3) Q.14 Ans. (D) 1 1 1 1 30 1 = + + = = C 12 24 8 120 4 C = 4f V= q q q + + = 60 12 24 8 30q = 60 120 q 60 4 q = 240 f Vs = q 240 = = 10V ; q = CsV = 5 10 = 50C C 24 Q.15 Ans. (D) has sharp breaking domat high voltage. Q.16 Ans. (B) V = 0.75 V Ig = 15 mA = 15 10-3 A G= V 0.75 750 = = = 50Ω -3 Ig 15 10 15 S= Ig ×G I - Ig = 15 103 50 25 15 103 15 103 50 15 50 = 3 = 10 (25000 15) 24985 0.03 Q.17 Ans. (A) n20 = 2n1 n20 = n1 + (20-1) 4 3n1 = n1 + 19 4 2n1 = 19 4 n1 = 19 2 n1 = 38 Hz (4) Q.18 Ans. (D) p = tan-1(g) = tan-1 (1.5) = 570 Q.19 Ans. (D) λ= 0.693 T T λ 0.693 0.693 6.93 104 T = 103 = 1000 min Q.20 Ans. (D) R 2 L2 + I = M 4 12 R = D 2 D 2 L2 I = M + 16 12 Q.21 Ans. (C) E = nhr = nhc λ pt = p= E t nhc λ n pλ 6 108 6.63 103 = = t hc 6.63 103 3 108 = 2 1015 photons/s (5) Q.22 Ans. (A) a sin = n a sin 30 = 5.460 10-7 1 a = 5.460 10-7 2 a = 10.92 10-7 a = 1.092 10-6 m a = 1.092 10-4 cm Q.23 Ans. (B) y = A sin wt Hence A 2π = A sin t = A sin t 2 T 1 π sin -1 = t 2 2 π π t 2 6 t = 1 second 3 Q.24 Ans. (D) Third avertone has frequency 7n which means total length of pipe l 7 4 7 l 3 full loops + one half loop which would make four nodes and four antinodes 4 Q.25 Ans. (C) 12.26 0 λ= A V (12.26)2 V = λ2 (12.26) 2 = (0.12) 2 = 10.44 kV (6) Q.26 Ans. (A) E = I(R + r) 0.5 (2 + r) = 0.25(5 + r) 4 + 2r = 5 + r r = 1 E = 0.5 (2 + 1) = 1 3 2 = 1.5 V Q.27 Ans. (B) Breaking force = Breaking stresix Area of Cross section = Weight of wire 6 10 A = A l pq 106 l pq 106 = 34 m 3 103 9.8 Q.28 Ans. (B) I1 = 2A, B1 = 4 10-3 wb/m2 B2 = 8 10-3 wb/m2, Q1 = Q2 C I = Q nAB C C I1 = Q , I = 1 Q2 2 nAB nAB 1 2 I1 B2 8×10-3 2 = = = I2 B1 4×10-3 1 I2 = I1 2 = = 1A 2 2 Q.29 Ans. (C) A = 1m2 q = 8.85 μC 12 1 q2 f= 2 0 2 A 2 0 (7) 1 8.85 1012 2 2 1 8.85 1012 = 0.5 N Q.30 Ans. (A) 50 - 30 20k = t t R1 = R1 Q - 30 = k 2 t R2= 20k R 20 t 1 R1 Q 30 Q 30 k 2 t 2 20 Q 30 2Q - 60 = 20 2Q = 20 + 60 2Q = 80 Q = 400C Q.31 Ans. (A) Angle between plane of the coil and the magnetic field = 300 Angle between A + B = 600 = nABcosQ = nAB cos60 = nAB 1 = 20 10 10-4 0.5 cos60 for 2 Q = 00 2 = nAB 1 nAB -1 Q - Q2 2 q= 1 = R R 1 20 10 104 0.5 2 104 C 50 = 100 10-6 C = 100C (8) 1 2 Q.32 Ans. (C) J = nIABsinQ = 100 10 25 10-4 1.2 sin 300 = 1.5 Nm Q.33 Ans. (A) T= 2πr Vc 2π(2R) Vc = 4 sec Q.34 Ans. (A) R 8400 84000 = = = 21000 J/kmole K γ-1 0.4 4 Cv = 21000 10500 = = 750J/kgK 28 14 Cp= Cv = 14 750 = 1050 J/kgK Cv = Q.35 Ans. (C) W = T dA = T 2 4 (r22 - r12) = 28 10-3 2 4 3.14 (16 10-4 - 4 10-4) = 28 8 3.14 12 10-3 10-4 = 8440 10-7 = 8.44 10-4 J Q.36 Ans. (B) Q.37 Ans. (B) n = 1 2π k m 1 225π 2 2π 0.01 = 75 Hz 50 Hz No resonance (9) Q.38 Ans. (C) path diff = 27.5 10-6m = 55 27.5 106 55 = 5 10-7 m = 5000 AU Q.39 Ans. (C) Q.40 Ans. (B) 1 2 Rot KE 2 IW = RollKE 7 mv2 10 1 2 2 2 mr w 2 5 = 7 mr 2 w 2 10 1 10 5 7 2 7 Q.41 Ans. (D) 2 2 g2 R R 1 g1 r 2 R 4 % charge = 4 1 100 = 75% 4 Q.42 Ans. (B) r = 1 (0.8 + 0.4) = 0.16 Q = 100 kcal Qr = rQ = 0.16 100 = 16 kcal (10) Q.43 Ans. (C) L = 4m, l1 = 150 cm l2 = 100 cm R = 10 l 1 l2 r = R l1 150 100 150 10 = 10 = 10 50 100 = 5 Q.44 Ans. (B) By caw of constation of angular momentum I1W1 = I2W2 MR 2 MR 2 w1 = + mR 2 w 2 2 2 M M n1 = + m n2 2 2 50 50 × 48 = + 5 n2 2 2 25 48 = (25 + 5) n2 n2 = 25 48 = 40 rpm 30 Q.45 Ans. (C) w = 720 10-9 m μg 3 3 9 λw = = = μw 2 4 8 λg w 8 720 8 109 g 9 9 = 640 10-9 = 640 nm (11) Q.46 Ans. (D) T= 0.693 , = 1.388 per year λ = 0.693 1.386 = 1 2 = 0.5 year Q.47 Ans. (C) E1 = W0 + K.E.1 , E1 = E W0 = constant E2 = W0 + K.E.2 , E2 = 2E E2 - E1 = K.E.2 - K.E.1 2E - E = KE2 - K.E.1 E = KE2 - K.E.1 i.e. E1 = KE2 - K.E.1 Wot K.E.1 = KE2 - K.E1 K.E.2 = W0 + K.E.1 + K.E.1 K.E2 = W0 + 2K.E.1 K.E.2 = 2 K.E.1 Q.48 Ans. (B) Vi = 20V, = 50, IB = 2mA, RL = 4k V0 = IB RL = 50 2 10-3 4 103 = 400 V Av = = Vo Vi 400 20 = 20 Q.49 Ans. (A) 1 q1q 2 9 109 2 2 10-6 10-6 F= =T= 4π 0 r2 22 = 9 10-3 N (12) n= 1 T 2l M 1 9 10 3 2 2 0.001 3 103 = 4 = 0.75 10-3 Hz = 0.75 mHz Q.50 Ans. (D) E = F = Eq = 234 0.5 = 117 N W = U = F. S. = 117 2 10-2 = 234 10-2 J = 2340 mJ (13) PART - B - CHEMISTRY MH-CET-2015 Solution Version-II Answer and Solution Key Chemistry Q.51 Ans. (B) Veal/videal knowledge base Q.52 Ans. (A) I as size ‘! down the group it is basecily “! I is weakest base Q.53 Ans. (B) Amylase Q.54 Ans. (B) 0.098 atm Q.55 Ans. (B) knowledge base Q.56 Ans. (B) knowledge base Q.57 Ans. (C) knowledge base +10KJ Q.58 Ans. (D) knowledge base question Q.59 Ans. (D) 4 Q.60 Ans. (A) Zero order reaction Q.61 Ans. (B) lnA knowledge base theory question. Q.62 Ans. (C) He+O2 information Q.63 Ans. (C) F Q.64 Ans. (B) knowledge base question Q.65 Ans. (A) A2B3 (x = 2 y = 3) (14) Q.66 Ans. (B) CO informative Q.67 Ans. (B) H2O + CO2 Q.68 Ans. (C) Informative Q.69 Ans. (B) (n-2) F1-14 , (n-1)d0-1 ns2 f block element last two orbitals are not completely filled. Q.70 Ans. (B) It form BaSO4 while ppt with BaCl2 solution. Q.71 Ans. (B) 5[Pt(NH3)6]Cl4 4Cl(-) + [Pt(NH3)6]4+ hence 5 ions Q.72 Ans. (D) (Ethyl cyanide) compound B is ethyl cynocide is incorrect statement Na/C2H5OH Red P CH3-OH and I 2 CH3-I (A) Acoholic KCN CH3 CN (B) hyd CH3 CN2NH2 roly (C ) H+ sis CH3 COOH (D) Q.73 Ans. (C) Terhiary butyl halide will undergo faster SN' becouse it form Terhiary butyl carbonium ion tnen it gives terhiary butanol. Q.74 Ans. (B) butab-2-ol CH3 - CH2-CH-CH3 | OH (X) Conc H2SO4 CH3-CH=CH-CH3 (Y) Q.75 Ans. (B) OH Br OH Br 3Br2 +3HBr water CH3 CH3 Br Tru Bromo Derivative (15) 1) O3 2) H2O/Zn 2CH3-C-H || O (C2H4O) + H2O2 Q.76 Ans. (C) O O || || CH3-CH2 - CH2-C-CH3 Pentan – 2-one has - C - CH3 grouping hence Iodoform testnis +ve for Pentan -2- one and not for pentan -3- one. Q.77 Ans. (B) p-Ethylb benzaldehyde on oxidation gives 1-4 benzene dicarboxylic acid hence compound x is p-Ethylbenzaldehyde Q.78 Ans. (B) Information base Q.79 Ans. (C) Knowledge base question. Q.80 Ans. (B) knowledge base question. Q.81 Ans. (A) Sucrose knowledge base Q.82 Ans. (A) Informative Q.83 Ans. (A) CH2 - CH - CH2 | | Zn dust CH3 - CH = CH2 + ZnBr2 Br Br Q.84 Ans. (D) As branching ‘! in alkane it’s B. P. hence D Q.85 Ans. (C) CH2-CH3 + CH3-CH2-Cl AlCl3 Ethyl Benzene m.f.(C8H10) Q.86 Ans. (D) 0, 0, knowledge base if structure is know. Q.87 Ans. (D) CH3-C Cl Cl Cl Cl + 6 Ag + Cl Cl C - CH 3 CH3-C C-CH 3 (16) But-2-yne + 6 AgCl Q.88 Ans. (D) knowledge base Q.89 Ans. (C) Nacl Q.90 Ans. (D) 0.3 M Bacl2 it gives more ions. Q.91 Ans. (A) knowledge base. Q.92 Ans. (B) Anode knowledge base Q.93 Ans. (B) CH(OH)2.CHCO3 knowledge base Q.94 Ans. (C) Group-15 knowledge base Q.95 Ans. (A) knowledge base aliphatic primary amine Q.96 Ans. (D) Vitamin B is water soluable Q.97 Ans. (A) Glucose and fructose form soluable Q.98 Ans. (A) Chloroprene is monomer of natural rubber Q.99 Ans. (D) Barbitaric acid derivative is sleep inducing drug Q.100 Ans. (C) Sucrose is not an artificial sweetener (17) PART - C - BIOLOGY MH-CET-2015 Solution Version-22 Answer and Solution Key Q 101 – D Phytophthora palmivora it is used as microbial herbicide not biopesticide. Q 102 – A Mg++ Q 103 – A Pusa gaurav this variety of mustard is resistant to aphids Q 104 – A Leaching. Q 105 – D Atlass-66 Q 106 – B Cleaving DNA segment with endonuclease and rejoining them with ligase. Q 107 – B boolworms Q 108 – C Coli Q 109 – B Vit-D and vit –E these are fat soluble vitamins Q 110 – C Phosphorous Q 111 – D 2 Q 112 – C C4 plants agranal chloroplast is found in c4 plants Q 113 – C eutrophication Q 114 – C CH3 , CH3 group in chlorophyll –a is replaced with CHO group in chlorophyll –b Q 115 – A Double fertilization. Q 116 – A proton gradient Q 117 – B Enoclase Q 118 – B a-3 b-4 c-1 d-2 1. Oxaloagcetate - 3). 4 carbon compund 2. Phosphoglyceraldehyde -4). 3 carbon compund 3. Icocitarate -1). 6 carbon compund 4. α-ketoglutarate -2) 5 carbon compound 5. Q 119 – C all hybride plants are tall when a tall plant was grown in nutrient deficient soil its genotype remain same. Q 120 – D infinity Q 121 – B maternal sporophytic tissue in ovule Q 122 – B -8 f1 progency shows genotype AaBbCc it will produce 8 different type of gametes. Q 123 – C A polypeptide of 24 amino acids will be formed when 25th codon (VAV ) is mutated to VAA then After forming polypeptide of 24 amino acids protein synthesis will be stopped. Q 124 – C fumaric acid Q 125 – D Succinic acid → fumaric acid Q 126 – A open during night and close during the day Q 127 – A Azospirillum Q 128 – C a-3, b-5, c-1, d-2 a) monohybride cross–3) TtXTt b) Test-Cross -5) Tt-Xtt c) Alleles -1) T and t d) homozygous tall–2) TT Q 129 – D Bryophylllum and kalanchoe In these plants vegetative propogation occurs by leaf. Q 130 – A regulatory gene Q 131 – D PS II - P700 Q 132 – D 6PGAL and 120 ATP Q 133 – B 264g For synthesis of 1809 of glucose. 6 CO2 molecules are required Molecular wt. of C-is-12 12×6=72 Molecular wt. of O-is-16 O2 = 16×2=32, 32×6=192, (72+192=264) Q 134 – A extra chromosomal material Q 135 – A 5’AAU3’ condon can be read only in 5’-3’ direction so far Anticondon 3’ UUA5’ condon is 5’AAU3’ direction so far anticodon 3’ UUA5’condon is 5’AAU3’ Q 136 – A denaturation, annealing synthesis Q 137 – D-lichens. Q 138 – C-100-125 rpm Q 139 – B- segregation Q 140 – B-Filiform apparatus Q 141 – D-N-formylmethionine in eujcarytp AA, t-RNA complex has amino acid methionine and in Prokaryote AA1 t-RNA complex has amino acid M-Formyl methionine Q 142 – C 58 and 15 Root is part of stock so chromosome in root are 58. While egg cell is part of scion and is haploid so it contain-15 chromosome. Q 143 – A -light red Q 144 – A- 2 celled pollen grain Q 145 – D-Rryy and RRyy Q 146 – B-198 In 34 nm DNA strand has 10pairs of spiral so 200 nucleotides are present. In between two Successive nucleotides, a single phosphodiester bond is present one nucleotide of each end of DNA strand do not form linkage DNSA is double 200-2=198 Q 147 – C-Oosphere Q 148 – D-UUA, CUU, leucine these two codon codes for leucine amino acid. Q 149 – C-self sterility Q 150 – C-Endolysin Q 151 – A-Rare species Rare species are those whose members are few, live in small geographical areas or in unusual Environment. Q 152 – C-Lateral walls of thalamencephalon Thalamencephalon(Diencephalam) lateral walls are interconnected by Habencular commisure. Q 153 – C-Blue Print The complete sequence of human genume is described as blue print. Q 154 – B-Oenothera lamarkiana Hugo de varies (1901) a Dutch botanist proposed “mutation theory” by studying the plant evening primerose [Oenothera lamarkiana] Q 155 – B-50% When y sperm fertilizes egg , then resulting zygote (XY) develops into male child(boy). Possibility of fertilization of egg by either X-sperm or Y-sperm is always 50%. It is independent of Number of previous children. Q 156 – C-Replication DNA amplification means to obtain more copies of DNA to in vitro replication by PCR technique Q 157 – B-Ureotetic—Tadpole larva of frog Tadpole larva frog is ammonotetic. Q 158 – D-Small Pox Q 159 – D Epoch — Animal life A)Palaeocene — Rise of first prionate B)Eocene — Diversification of placental mammals C)Oligocene — Rise of first monkeys and apes D)Miocenex — first man like open formed Q 160 – B-interferon’s Interferon’s (glycoproteins) make the surrounding cells resistant to viral infection. Q 161 – B-Rh+ve husband and Rh-ve wife Rh antigen induces a strong immunogenic response when introduce into RH-ve individual. It results in haemolytic disease of new born. Q 162 – B-Patients has antibodies ‘b’ Blood group Genotype AB A or Antigen Antibodies Can donate blood to A&B — A, B, AB, O A b A,O Q 163 – Common name — Scientific name a)sea anemone — Adamsia pallicata b)Hermit crab — Euparagus prideauxi c)Sucker fish — Echeneis d)Pilot fish — Remora Q164 – B inhibits cellular respiration in plants by reacting with cytochrome oxidase enzyme system. Q165 – A Hormone Ca ++, cyclic Amp & IP3 acts as a secondary messenger while hormone acts as a primary messenger. Q166) C Secondary oocyte Spermatogenia, zygote and oogomia are diploid. Q167) C Papaver somniferum Heroin[ smack]/diacety/morphine is extracted from the latex of POPPY Plant.[Papaver Somniferum] Q168) B) Marrino ram,cross breeding Blkaneri ewes X Marrino ram -> Hisardale It is a eross breeding i.e superior male of one breed mated with superior breed of another breed. Q169) B) cck Cholecystokinin [ckk] acts on pancreatia acini (exocrine port) and stimulate to secrete pancreatic juice. Q170) method – mode of action a)Condom – prevents deposition of semen in the vagina. b) Copper T – prevents fertilization/ implantation. c)tubectomy – block gamete transport & prevent pregnancy. d)spermicide – Immobilize and kill sperm. Q171.) D) The pulmonary trunk and systemic aorta are connected by ligamentum arteriosum that represents remnants of ductus qryeriosus of foetus. Q172.) B) systemic circulation pathway – LV -> RA Left ventricle -> Aorta -> tissues -> veins -> Right auricle Q173.) C) Iodopyracet. In tubular secretion toxic,unfiltrated substances are actively secreted from blood into nephron. eg. Iodopyracet Q174.)D) Syngamy ( Fertilization) Syngamy lead to mixing of maternal and paternal chromosomes which is a basis of variations that leads to evolution. Q 175.) B) Atria secrete ANF, B.P. decreases Atrial Natriuretic factor is secreted by Atria as blood pressure increases. ANF acts as a vasodilator which results into decrease in blood pressure. Q 176.) D) Apis indica And Apis meclifera. Q 177.) B)Semicircular canals and otolith organ. In internal ear, above the cochlea, vestibular apparatus is present, which consists of three semicircular canals and otolith organ formed of the sacculus and utriculus. Q 178.)C) Megameres of morula. Zygote -> morula micromeres -> trophoectoderm. Megameres -> inner cell mass -> gastrnla i.e three germ layer Q179.) A) Frontal lobe In frontal lobe general motor area and association area is present. Q 180.) D) Endocrine function of kidney. Artificial kidney i.e. dialysis is treatment works on the principal of diffusion and helps in osmoregulation and ultrafiltration.But fails to perform endocrine function of kidney i.e to secrete hormones like calcitrial and erythropoietin. Q181.) D) lenteotropin (prolactin) marintains cerpus lutenm during pregnancy. It secretes progesterone. Increased level of progensterone suppress the menstrual cycle i.e no egg formation. so no fertilization pregnancy. Q182.) C Sensory Trigeminal nerve ( Dentist nerve)/ IVth mixed type. It gives three branches asa) Opthalmic b) Maxillary c) Mandubular - Sensory Sensory mixed Q183.) A) Certicosteroid Pituitary of mature foetus secretes ACTH which causes release of certicosteriod hormones from foetal adrenal cortex which diffuse across the placenta and accumulate in mothers blood till they cause a decrease in progesterone production and increase in production of prostaglandins. Q184) D) fructose Seminal fluid contain fructose, fibrinogen and prostaglandins. Fructose present in seminal vesicles secretion is not present elsewhere the body. Hence it provides a proof for forensic test in case of rape. Q185.)C) Minamata is a disease produced by mercury poisoning leads to crippling and fatal disease(Japan 1950). Q186.)D) Sterilization techniques. More safest as compared to given option. Q187.)D) Progesterone. Decrease in progesterone level, causes shedding off endometrial lining, leads to menstruation. Q188.)A) Human Ancester Cramial capacity 1. Homo habilis - 650-800cc 2. Homo erectus - 940 cc/850-1200cc 3. Neanderthal man - 1450cc 4. Cro-magnon man - 1600cc Q189.)D) Addison’s disease Q190) B Origin of life on earth. Q191.)A)23 Linkage group = haploid no. of chromosomes=number of pairs of chromosomes. Q192.)B) Natural selection Biston betularia and Biston carbonaria Q193.)A) Opsonisation Meaning/ definition Q194.)B) Column I Column II a)TPA - Reverse blood clot b)TGF-B - Promotes new blood vessel formation c)α-1 antitrypsin - To treat emphysema d)Blood Clotting Factor VIII- To treat haemophilia Q195.) Normal Vision man Y × Normal Vision Woman whose father was colorblind × Y Y Y Normal Female Child Carrier Female Child Y Normal Male Child Colorblind Male Child 50% Normal Vision Male 50% colorblind Vision Male Among Male Children Only Q196.)C) Sporozoite Sporozoite infects liver cells. Q197.)A) Chotong, assel, Brahma. Q198.)B) Antithrombins. Antithrombins are anticoagulants which prevents the clotting of blood inside blood vesssals. Q199.)D) G Group. Downs syndrome -> (21st thrisomy ) 46+1=47. Down’s syndrome is due to an extra chromosome number 21(from Group G). Q200.)D) Glomerulus Glomerulus is a tuft of blood capillaries present in Bawman’s capsule. and acts as a filtering units. As being blood capillaries truly it is a part of blood circulatory system.
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