Test - 1_Code B (Answers & Hints)
All India Aakash Test Series for Medical-2015
T EST – 1
ANSWERS 1.
(3)
37.
(2)
73.
(2)
109. (3)
145. (3)
2.
(2)
38.
(2)
74.
(1)
110. (4)
146. (2)
3.
(4)
39.
(4)
75.
(4)
111. (1)
147. (3)
4.
(4)
40.
(3)
76.
(1)
112. (3)
148. (2)
5.
(1)
41.
(3)
77.
(4)
113. (3)
149. (1)
6.
(4)
42.
(4)
78.
(3)
114. (3)
150. (2)
7.
(3)
43.
(2)
79.
(4)
115. (3)
151. (2)
8.
(2)
44.
(2)
80.
(3)
116. (3)
152. (3)
9.
(3)
45.
(4)
81.
(3)
117. (2)
153. (2)
10.
(3)
46.
(2)
82.
(2)
118. (4)
154. (1)
11.
(4)
47.
(1)
83.
(4)
119. (4)
155. (1)
12.
(1)
48.
(2)
84.
(2)
120. (3)
156. (3)
13.
(1)
49.
(4)
85.
(4)
121. (4)
157. (1)
14.
(2)
50.
(2)
86.
(3)
122. (4)
158. (4)
15.
(2)
51.
(3)
87.
(4)
123. (3)
159. (1)
16.
(4)
52.
(2)
88.
(1)
124. (4)
160. (4)
17.
(2)
53.
(3)
89.
(4)
125. (3)
161. (3)
18.
(4)
54.
(3)
90.
(1)
126. (3)
162. (2)
19.
(3)
55.
(1)
91.
(4)
127. (3)
163. (1)
20.
(3)
56.
(2)
92.
(3)
128. (1)
164. (2)
21.
(4)
57.
(4)
93.
(3)
129. (2)
165. (2)
22.
(2)
58.
(1)
94.
(3)
130. (1)
166. (3)
23.
(3)
59.
(2)
95.
(2)
131. (1)
167. (2)
24.
(2)
60.
(4)
96.
(2)
132. (1)
168. (1)
25.
(4)
61.
(4)
97.
(3)
133. (3)
169. (1)
26.
(1)
62.
(4)
98.
(2)
134. (3)
170. (4)
27.
(2)
63.
(4)
99.
(4)
135. (3)
171. (3)
28.
(4)
64.
(2)
100. (4)
136. (1)
172. (4)
29.
(1)
65.
(3)
101. (3)
137. (3)
173. (3)
30.
(2)
66.
(4)
102. (3)
138. (4)
174. (3)
31.
(1)
67.
(3)
103. (3)
139. (2)
175. (2)
32.
(4)
68.
(2)
104. (2)
140. (3)
176. (4)
33.
(2)
69.
(3)
105. (4)
141. (4)
177. (3)
34.
(2)
70.
(1)
106. (3)
142. (3)
178. (3)
35.
(2)
71.
(2)
107. (3)
143. (3)
179. (2)
36.
(4)
72.
(2)
108. (3)
144. (4)
180. (4)
1/8
All India Aakash Test Series for Medical-2015
Test - 1_Code B (Answers & Hints)
Hints to Selected Questions [ PHYSICS] 1.
Answer (3)
11. Answer (4)
[ML2T −2 ] = [ML−1T−2 ] Energy density = [L3 ]
Least % error in 500 × 10–4 m. 12. Answer (1) 13. Answer (1)
Pressure = [ML–1T–2] 2.
Answer (2)
3.
Answer (4)
4.
Answer (4)
5.
Answer (1)
% = 2% v=3
15. Answer (2)
n2 = 3.6 = 36 × 10–1 7.
Answer (3) [px] = pxr qt 2
8.
%=
= [r] = [F]
0.06 × 100 = 1 % 6
d% = 4%
x = Asin(ABt)
16. Answer (4)
A = [L]
9.
0.005 × 100 = 1 % 0.5
m πr 2 d% = m% + 2r% + %
= F = [MLT ]
Dimension of ABt =
0.003 × 100 = 1 % 0.3
d=
−2
Answer (2)
B=
m%= r %=
F = px + qt2 + r [qt2]
3)
14. Answer (2)
1 kg m2 s–2 = n2 (10 kg) (10 m)2 (1 minute)–2 Answer (4)
% (v =
v = 6%
n1u1 = n2u2
6.
S% = 4 = 2 % (s = 6 2)
Maximum % error = 3L% + 2T% [L0T0]
1 = [L−1T −1] [L] [T]
Answer (3)
10. Answer (3)
= 3 × 1 + 2 × 0.5 = 4% 17. Answer (2) 18. Answer (4) 19. Answer (3) 20. Answer (3)
dL 2 =+ L 100
dT 1 dL 1 dg = − T 2 L 2 g dg 4 =− g 100 T%=
1 1 (2) − ( −4) 2 2
= 3% (Increases)
2/8
21. Answer (4) 22. Answer (2)
h1 =
1 g (2)2 2
h2 =
1 1 g (u )2 − g (2)2 2 2
h1 1 = h2 3
Test - 1_Code B (Answers & Hints) 23. Answer (3)
All India Aakash Test Series for Medical-2015 31. Answer (1) α = 2 m/s2
h2 = 3h1
h=
1 2 gT 2
1 1 ⎛T ⎞ h′ = gT 2 − g ⎜ ⎟ 2 2 ⎝4⎠
2
32. Answer (4)
A
For AB,
25. Answer (4)
s = ut +
1 2 at 2
a = –1 m/s2
24. Answer (2)
2 1 1 = + v v1 v 2
C
64 m
⎛ 15 ⎞ h′ = ⎜ ⎟ h ⎝ 16 ⎠
x+x 2 = x x 1 1 + + v1 v 2 v v 2
B
40 m
t=0 u = 12 m/s
⇒
⎛ αβ ⎞ v max = ⎜ ⎟T ⎝α+β⎠
(Retardation)β = 3 m/s2
1 ⎛ 15 ⎞ h′ = gT 2 ⎜ ⎟ 2 ⎝ 16 ⎠
v=
T = 10 s
For AC,
1 64 = 12t − (1) t 2 2 t = 8 s and 16 s
33. Answer (2) 2
⎛v ⎞ 2 ⎜ 2 ⎟ = v − 2g (30) ⎝ ⎠
26. Answer (1) v = 800
v =B x
v = 20 2 m/s
v2 = B2x uniformly accelerated
β2 Acceleration. = 2 1 ⎛ β2 ⎞ s = ⎜⎜ ⎟⎟ t 2 2⎝ 2 ⎠ 27. Answer (2)
28 m/s 34. Answer (2) 35. Answer (2) 36. Answer (4) 37. Answer (2) x = t2 – t3
Area =
1 1 × 3 × 30 + × 1× ( −10) 2 2
= 45 – 5 = 40 m 28. Answer (4) 29. Answer (1)
⎛u +v ⎞ s =⎜ ⎟t ⎝ 2 ⎠
u = 2t – 3t2 For max. velocity
dv =0, dt d 2v <0 dt 2
2 – 6t = 0
30. Answer (2) s th = u + t
1 a(2t − 1) 2
t=
1 s 3
3/8
All India Aakash Test Series for Medical-2015
Test - 1_Code B (Answers & Hints) 42. Answer (4)
38. Answer (2)
x = αt 2 − βt 3
α(acc.) =
a v
dx = 2αt − 3β t 2 dt v=0
dv a = dt v
t=
2α 3β
x=0 v
t
v0
0
∫ vdv = ∫ adt
t=
α β
43. Answer (2) x = 10t – 2t2
v
⎡v 2 ⎤ ⎢ ⎥ = at − 0 ⎣⎢ 2 ⎦⎥v
v=
0
dx = 10 − 4t dt
v = 0, t =
v 2 v 02 − = at 2 2
5 s 2 | x (2.5) − x (2) | + | x (3) − x (2.5) | 1 = 1 m/s
Average speed =
v 2 v 02 = + at 2 2
44. Answer (2) Area = v5 – v0
1 × 5 × 5 = v5 − 0 2 v5 = 12.5 m/s
39. Answer (4) 40. Answer (3)
45. Answer (4)
41. Answer (3)
[ CHEMISTRY] 46. Answer (2) Relative mass of Mg ⎛ 78.7 ⎞ ⎛ 10.1 ⎞ ⎛ 11.2 ⎞ × 24 ⎟ + ⎜ × 25 ⎟ + ⎜ × 26 ⎟ = ⎜ 100 100 100 ⎝ ⎠ ⎝ ⎠ ⎝ ⎠
= 24.3 47. Answer (1) Number of Cu atoms in 0.200 mol = 0.2 × 6.022 × 1023 = 1.20 × 1023 48. Answer (2)
N2(g) 22.7 1
4/8
+ 3H2(g) ⎯→ 2NH3(g) : 68.1 : 45.4 : : 3 2
The ratio of gases is consistent with the stoichiometry of the chemical equation. 49. Answer (4) Fact 50. Answer (2) M1V1
= M2V2
⇒ 0.5 × x
= 0.02 × (250 + x)
∴ x
= 10.41 mL
51. Answer (3)
mol L –3 = 50 × 10 mol
No. of moles of H2SO4 = 50 mL × 1
∴ Mole of Zn required = 50 × 10–3 mol ∴ Mass of Zn
= 50 × 65 × 10–3 g = 3.25 g
Test - 1_Code B (Answers & Hints)
All India Aakash Test Series for Medical-2015
52. Answer (2)
60. Answer (4)
Millimole of AgNO3 = 50 × 0.2 = 10 Millimole of NaI
= 25 × 0.4 = 10
∴ Mole of AgI formed
= 10 m mol
∴ Amount of AgI (in g)
Fact 61. Answer (4) Fact
= 10 × 10–3 mol
62. Answer (4)
= 10–2 × 235 g
Fact
= 2.35 g
63. Answer (4) Fact
53. Answer (3)
64. Answer (2)
The empirical formula of the compound would be C3H7 and the molecular formula of alkane will be C6H14.
m =
54. Answer (3)
=
No. of H-atom =
39.6 × 8 × 6.02 × 1023 132.1
nCO2 =
65. Answer (3) N
nNO2 =
=
7 1000 × 49 250
4 N 7 66. Answer (4)
2.2 1 mole = 4.4 20
∴ No. of O-atoms =
1000 × 3 1000 × 1.25 − 3 × 40
= 2.79 m
= 1.44 × 1024 H-atom 55. Answer (1)
1000 × M 1000d − M.MB
=
1 NA 10
Fact 67. Answer (3)
2.3 1 mole = 46 20
m =
20 × 1000 40 × 80
= 6.25 m 1 NA ∴ No. of O-atoms = 10
68. Answer (2) Relative moles of Fe =
∴ Ratio would be 1 : 1 56. Answer (2)
30.1 = 1.88 16 ∴ Simplest ratio = 1 : 1.5
O=
Fact 57. Answer (4)
= 2:3
58. Answer (1)
∴ Empirical formula= Fe2O3
200 drops ≡ 10 g ∴ 1 drop ≡
69.9 = 1.25 56
69. Answer (3)
10 g = 0.05 g 200
∴ No. of molecules =
Fact 70. Answer (1)
0.05 × 6.023 × 1023 18
= 1.673 ×
1021
59. Answer (2) 180 g H2O has maximum number of moles.
Fact 71. Answer (2)
∵ 30 g ethane ≡ 65 g Zn pure ∴ 3 g ethane ≡ 6.5 g Zn pure ∴ Impure Zn = 10 g
5/8
All India Aakash Test Series for Medical-2015
Test - 1_Code B (Answers & Hints)
72. Answer (2)
80. Answer (3) Fact
60 / 18 = 0.833 40 60 + 60 18 73. Answer (2) x H2O =
81. Answer (3) 82. Answer (2)
1000 = 55.55 M 18
M=
Atomic mass
74. Answer (1) 1 g equivalent O2 ≡ 5.6 L
55.95
Equivalent mass of carbonate = 12 + 30 = 42
76. Answer (1)
85. Answer (4)
Fact
Fact
77. Answer (4)
86. Answer (3)
∵ 9.11× 10 −28 g electron ≡ 1 electron
Fact
1
∴ 1 g electron ≡
9.11× 10 −28 ∴ Mole of electron in 1 g
≡
=
84. Answer (2)
All has NA-number of electrons
electron
87. Answer (4) Fact 88. Answer (1)
1 9.11× 10
54 × 5 + 56 × 90 + 57 × 5 100
83. Answer (4)
75. Answer (4)
≡
=
−28
× 6.023 × 10
23
∵ 0.34% ≡ 56 g
1 × 105 mole 9.11× 6.023
∴ 100% ≡
78. Answer (3) ∵ 276 g Ag2CO3 ≡ 1.5 × 22.4 L
56 × 100 = 16470.58 g 0.34
89. Answer (4)
∴ 2.76 g Ag2 CO3 ≡ 0.336 L
Fact
79. Answer (4)
90. Answer (1)
Fact
Fact
[ BIOLOGY ] 91. Answer (4) Paramoecium, Chlamydomonas, Chlorella and Amoeba were placed in Protista. 92. Answer (3) Monera 93. Answer (3) Cell wall, locomotion, contractile system, nutrition, response to external stimulus. 94. Answer (3) Bacteria
97. Answer (3) Cyanobacteria show oxygenic photosynthesis. 98. Answer (2) 99. Answer (4) Heterocyst is non-green cell. 100. Answer (4) Cyanobacteria, Methanogens, Thermoacidophiles are autotrophic. 101. Answer (3) Salmonella - Typhoid
95. Answer (2)
Clostridium - Tetanus
96. Answer (2)
Vibrio
6/8
- Cholera
Test - 1_Code B (Answers & Hints) 102. Answer (3)
122. Answer (4)
Flagella help in locomotion. 103. Answer (3)
Lowest category is species. 123. Answer (3)
Methanogens
- Obligate anaerobe
Thermoacidophiles - Autotrophs
Problem of classification becomes difficult from species to kingdom. 124. Answer (4)
104. Answer (2)
125. Answer (3)
Bacteria
126. Answer (3)
105. Answer (4) Chemoautotrophs oxidise inorganic substances.
International code for Botanical nomenclature. 127. Answer (3)
106. Answer (3) Parasexuality
128. Answer (1) - Derived from Latin word systema
107. Answer (3) Three domains are Bacteria, Archae and Eukarya
- Based on evolutionary study 129. Answer (2)
108. Answer (3)
Biological concept is based on reproductive isolation.
109. Answer (3)
130. Answer (1)
110. Answer (4) Influenza is viral disease.
131. Answer (1) Unicellular organisms - Protists, Monera
111. Answer (1) Sap vacuoles are absent.
132. Answer (1) Protonema - Fragmentation, Planaria - Regeneration
112. Answer (3) Cell wall is made up of pseudomurein.
133. Answer (3) Reproduction is absent in mule, worker bees, some human couple.
113. Answer (3) 114. Answer (3)
134. Answer (3)
115. Answer (3) Erwinia causes fire blight of apple. 116. Answer (3) Specific for each category, used for identification for plants and animals.
Growth of sand-dunes is due to the addition of material from outside. 135. Answer (3) 136. Answer (1) Porifera : Lack neurons. All members of kingdom Animalia are multicellular without exception.
117. Answer (2) 118. Answer (4)
137. Answer (3)
119. Answer (4) Herbarium – Specimens on sheets Eubacteria – Flagella present or absent Chlorella
All India Aakash Test Series for Medical-2015
– Cannot produce nitrogenase
Properties of cellular organelles arise as a result of interactions among the molecular components comprising the organelle. 120. Answer (3) Potato, Brinjal and Makoi, belong to Solanum. 121. Answer (4) Diptera is an order.
Nereis has closed circulatory system. 138. Answer (4) Ascaris is Pseudocoelomate. 139. Answer (2) Open circulatory Balanoglossus.
system
is
present
140. Answer (3) In echinoderms there is external fertilization. 141. Answer (4) Planaria is acoelomate.
7/8
in
All India Aakash Test Series for Medical-2015
Test - 1_Code B (Answers & Hints)
142. Answer (3)
160. Answer (4)
143. Answer (3)
161. Answer (3)
144. Answer (4) Molluscs are unsegmented. 145. Answer (3) Sea hare, tusk shell, squid, chiton all are molluscs. 146. Answer (2) Spongilla and Hydra are fresh water forms. 147. Answer (3) Corpora allata produces juvenile hormone. 148. Answer (2) Malpighian tubules are the excretory organs of insects e.g. Culex, Locusta. 149. Answer (1) Blood fluke is dioecious. 150. Answer (2) (i) Physalia is an hydrozoan, both polyp and medusoid form present.
Metacercaria is infective stage for primary host i.e. sheep. 162. Answer (2) Arthropods have white blood, they lack the respiratory pigment. 163. Answer (1) Choanocytes are collar cells. 164. Answer (2) Metamerism is present in arthropods too. 165. Answer (2) 166. Answer (3) 167. Answer (2) 168. Answer (1) 169. Answer (1) Leech has no setae or parapodia. 170. Answer (4)
(ii) Ancylostoma, is hookworm, it has filariform larvae.
171. Answer (3)
(iii) Pleurobrachia, is ctenophore and fertilisation is external.
173. Answer (3)
151. Answer (2) 152. Answer (3) 153. Answer (2) Cephalopods are predators with ink gland. 154. Answer (1) 155. Answer (1) 156. Answer (3) 157. Answer (1) In silver fish, there is direct development.
172. Answer (4) Wuchereria is present in the lymph vessels. 174. Answer (3) In ctenophores, bioluminescence is well marked. 175. Answer (2) 176. Answer (4) Ringworm is fungus. 177. Answer (3) Tapeworm exhibits pseudometamerism. 178. Answer (3)
158. Answer (4)
179. Answer (2)
159. Answer (1)
180. Answer (4)
8/8
