Aiats Medical 2016 Test 2 6l6g1z

Test - 2 (Code B) (Answers & Hints)

All India Aakash Test Series for Medical-2016

T EST – 2

ANSWERS 1.

(3)

37.

(4)

73.

(2)

109. (2)

145. (1)

2.

(2)

38.

(3)

74.

(1)

110. (1)

146 (2)

3.

(2)

39.

(4)

75.

(4)

111. (3)

147. (2)

4.

(4)

40.

(4)

76.

(3)

112. (3)

148. (2)

5.

(4)

41.

(4)

77.

(3)

113. (2)

149. (3)

6.

(4)

42.

(3)

78.

(4)

114. (4)

150. (3)

7.

(3)

43.

(2)

79.

(1)

115. (3)

151. (4)

8.

(2)

44.

(3)

80.

(3)

116. (2)

152. (2)

9.

(3)

45.

(3)

81.

(4)

117. (3)

153. (4)

10.

(2)

46.

(4)

82.

(2)

118. (4)

154. (3)

11.

(3)

47.

(3)

83.

(4)

119. (2)

155. (4)

12.

(4)

48.

(3)

84.

(3)

120. (4)

156. (4)

13.

(4)

49.

(1)

85.

(2)

121. (3)

157. (2)

14.

(4)

50.

(3)

86.

(2)

122. (2)

158. (1)

15.

(4)

51.

(2)

87.

(4)

123. (1)

159. (2)

16.

(4)

52.

(4)

88.

(3)

124. (4)

160. (3)

17.

(2)

53.

(4)

89.

(1)

125. (3)

161. (3)

18.

(4)

54.

(3)

90.

(3)

126. (4)

162. (2)

19.

(2)

55.

(3)

91.

(2)

127. (2)

163. (3)

20.

(3)

56.

(2)

92.

(1)

128. (1)

164. (2)

21.

(4)

57.

(1)

93.

(4)

129. (1)

165. (2)

22.

(2)

58.

(3)

94.

(1)

130. (2)

166. (4)

23.

(1)

59.

(4)

95.

(2)

131. (2)

167. (3)

24.

(3)

60.

(2)

96.

(4)

132. (3)

168. (4)

25.

(3)

61.

(4)

97.

(3)

133. (4)

169. (1)

26.

(2)

62.

(1)

98.

(1)

134. (4)

170. (3)

27.

(2)

63.

(1)

99.

(4)

135. (2)

171. (2)

28.

(3)

64.

(2)

100. (4)

136. (4)

172. (3)

29.

(2)

65.

(4)

101. (2)

137. (2)

173. (4)

30.

(2)

66.

(2)

102. (1)

138. (3)

174. (2)

31.

(3)

67.

(4)

103. (1)

139. (1)

175. (2)

32.

(2)

68.

(2)

104. (4)

140. (4)

176. (1)

33.

(3)

69.

(3)

105. (2)

141. (3)

177. (2)

34.

(2)

70.

(4)

106. (4)

142. (3)

178. (1)

35.

(4)

71.

(3)

107. (3)

143. (3)

179. (3)

36.

(2)

72.

(1)

108. (4)

144. (4)

180. (2)

1/8

All India Aakash Test Series for Medical-2016

Test - 2 (Code B) (Answers & Hints)

Hints to Selected Questions [ PHYSICS] 1.

Answer (3) A  B  5i  4 j  3k  C

2.

5i  4 j  3k Cˆ  5 2 Answer (2)

3.

Answer (2)

11. Answer (3)



T1 

d d and T2  v v sin 60



T1 3  sin60  T2 2

12. Answer (4)

v

A – B = 6 – 4 = 2 units 4.

Answer (4)

5.

Answer (4) The vectors should form a triangle for zero resultant.

6.

Answer (4)

x 2  242   32  x 

2

=

 x = 7 and 32 – x = 25 7.

L 2L  v rel v

13. Answer (4) v yx  v y  v x

Answer (2) 2

vx

2

2

10  10  10  10 3 m Answer (3)

Y

vy 45º 5 kml X 45º –vx vyx 5c os 45 º

9.

v 2

t

Answer (3) AB  AB   = 90°

8.

60º L A v B vcos60 vrel = v – vcos60

30°

Z

VR VM

VRM

–VM  VR  VM

(North)

Path of Y w.r.t. X Shortest distance of approach = XZ  5cos 45 

5 2

km

14. Answer (4)

VRM 

VR2

 VM2

 2VRVM cos120

v RM  102  82  10  8  84  2 21 kmph 10. Answer (2)

v2

–

v1

⎛ 40 ⎞ 1  tan1 ⎜ ⎟  45 ⎝ 40 ⎠ Angle of B with x-axis

v1

v2 (v  v1 ) 15 2 3 aav  2   m/s2 NW t 10 2

2/8

Angle of A with x-axis

⎛ 20 3 ⎞ 2  tan1 ⎜  60 ⎜ 20 ⎟⎟ ⎝ ⎠ Angle between them  2  1  15

Test - 2 (Code B) (Answers & Hints)

All India Aakash Test Series for Medical-2016 21. Answer (4)

15. Answer (4) v  u  at

T  tup  tdown 

 v  5 i  12 j  13 k



 Speed = 52  122  132  13 2 m/s



16. Answer (4)

2 km km/h

 4  2

4 hour 3

22. Answer (2)

r  cos t iˆ  sin t jˆ

R u

v   sin tiˆ   cos tjˆ a  2 cos tiˆ  2 sin tjˆ

2H 25 5 5m g 10

23. Answer (1) rQP  rQ  rP

2 =  r

= rQ  VP t

 Angle is 180°

24. Answer (3)

17. Answer (2) dd (6  3) H  1 2 tan 45  tan 45  2 m d1  d 2 63

25. Answer (3) ucos × t = 480 m  u cos  

18. Answer (4)

T 

d d 2 km   v  u v  u  4  2  km/h

2u sin  4 g

 u sin   20

 u sin   80 

Now, tan 45 

u sin   gt u cos 

 u cos   u sin   gt = 20 – 10 = 10  tan  = 2

480 2u sin   60 and  16 8 g

tan  

4 3

⇒   53

26. Answer (2) Velocity after 4 s is g × 4 = 40 m/s

60°

u = 40 m/s

  = tan–1(2)

19. Answer (2)

T

2u sin  4s g

At 2 s it is at the highest point of trajectory. So, centripetal acceleration = g 20. Answer (3)

R Minimum speed should be equal to horizontal speed of projectile.  v  u sin60 

v x  30 m/s, v g  2gH  2  10  45  30 m/s

40 3  20 3 m/s 2

27. Answer (2) When x = R, y = 0

⎛v   tan1 ⎜ x ⎜ vy ⎝

⎞ 1 ⎛ 30 ⎞ ⎟  tan ⎜ ⎟  45 ⎟ ⎝ 30 ⎠ ⎠

 0 = 40 R – 0.1 R2  R = 400 m

3/8

All India Aakash Test Series for Medical-2016 32. Answer (2)

28. Answer (3)

1t1  2 t2 2  m/s t1  t2 105

av 

Test - 2 (Code B) (Answers & Hints)

2   rad/hour 12 6



33. Answer (3)

29. Answer (2)

A=4m 90º

ac = v  becomes 4 times

B=5m 3m

3m

34. Answer (2)

at  2 rad/s2 R 35. Answer (4) 

3 2m

36. Answer (2) 37. Answer (4)

2 2 A = 4, B  4  3  5m

38. Answer (3)

30. Answer (2)

39. Answer (4)

31. Answer (3)

40. Answer (4)

u

For perpendicular movement the initial angle of throw should be 45° or more with the horizontal. 41. Answer (4)

°

42. Answer (3)

gcos = ac

at = gsin

tan  

 Centripetal acceleration ac = gcos

u2  g cos  R

⇒ R

vx



5 5

   45

43. Answer (2)

g



vy

v rel  3 iˆ  4 ˆj So, v  32  42  5 m/s 44. Answer (3) 45. Answer (3)

u2 10  10   20 m g cos  10  1 2

600 

2  20 rad/s 60

[ CHEMISTRY] 50. Answer (3)

46. Answer (4)

The total number of orbitals in a sub-shell is given by (2l + 1).

47. Answer (3) 48. Answer (3)

Co (27) :

K

L

M

N

2

8

15

2

49. Answer (1) n = 4,

l = 0; m = 0 l = 1; m = 0, ± 1 l = 2; m = 0, ± 1, ±2 l = 3; m = 0, ± 1, ±2, ±3

 No. of electrons would be 6.

4/8

eg. for p-sub-shell, l = 1  No. of orbitals = 2 × 1 + 1 = 3. 51. Answer (2) p-block contains metals (eg. Pb, Sn etc.), non-metals (eg. C, N etc) and metalloids (eg. As, Sb etc.) 52. Answer (4) La (Z = 57) belongs to d-block, 3rd group and 6th period of the periodic table. 53. Answer (4) Fact.

Test - 2 (Code B) (Answers & Hints)

All India Aakash Test Series for Medical-2016

54. Answer (3)

65. Answer (4)

  E The correct Schrodinger wave equation is H 55. Answer (3) In group-16 of the periodic table S has maximum while oxygen has minimum negative electron gain enthalpy. 56. Answer (2)

66. Answer (2) Fact. 67. Answer (4) IE of Be > B.

CO, N2O & NO are neutral oxides.

68. Answer (2)

57. Answer (1) Bohr’s theory is only applicable to one electron system. 58. Answer (3)

Fact. 69. Answer (3) Element

2

Na(11) :

Electrons are de-excited to 2nd orbit i.e., 1st excited state which falls in visible region.

2

1s

2s

2p

(n + l) = 0 (n + l) = 2

6

3s

(n + l) = 3

: Be

egH (in kJ/mole) : +66

(n + l) = 1

N

+83

–122

+31

Fact.

More metallic element has more basic oxide and Cs is the most electropositive element. 60. Answer (2) 3d

Mn2(+) (Z = 25) :

5

4s

0

; 5 unpaired electrons 3d

Ni2(+) (Z = 28) :

8

4s

3d

Zn2(+) (Z = 30) :

4s

71. Answer (3) Pairing of electrons in a sub-shell takes place only when all the orbitals of the sub-shell are singly occupied. 72. Answer (1)

0

; 2 unpaired electrons 10

Fact. 73. Answer (2)

0

;

E

13.6  Z2

Zero unpaired electrons 3d

(Z = 26) :

6

4s

n2

eV/atom

74. Answer (1)

0

; 4 unpaired electrons

61. Answer (4)

2r = n  2 ×  × x × 25 = 5; [∵ r5 = x × 25]   = 10 x Å

Fact.

75. Answer (4)

62. Answer (1) 

C

70. Answer (4)

59. Answer (4)

Fe2(+)

B

1

1 KE



1 KE2   2 KE1

49 7  16 4

∵

mvr 

nh , where n = 1, 2, 3, ......  2

in option (4) n = 4.5

63. Answer (1) Cerium (Z = 58) is an f-block element and the general valence shell electronic configuration of f-block elements is (n – 2)f 1–14 (n – 1)d 0–1ns2.

76. Answer (3) 77. Answer (3) Fact.

64. Answer (2) Chemical species : CO

NO

O2(+)

No. of electrons

15

15

: 14

N2

C2H4

14

16

78. Answer (4) The correct order is 4d < 5p < 6s < 4f

5/8

All India Aakash Test Series for Medical-2016

Test - 2 (Code B) (Answers & Hints) Now, 1.6 eV = h – 5 eV

79. Answer (1)

 h = 6.6 eV

⎛ 1 1 1⎞  Rz2 ⎜ 2  2 ⎟ ⎜ ⎟  ⎝ n1 n2 ⎠



6.6  1034 Js  3  108 m/s 6.6  1.6  1019 J = 187.5 nm



1⎞ ⎛ 1 ⎛94⎞ 5  R  1⎜ 2  2 ⎟  R ⎜ R ⎟ 3 ⎠ ⎝2 ⎝ 36 ⎠ 36

 200 nm 84. Answer (3)

80. Answer (3) Any orbital can accommodate maximum of two electrons. p-sub-shell can have maximum of six electrons.

85. Answer (2) 6th period has 32 elements whereas 7th period is incomplete. 86. Answer (2)

81. Answer (4) One photon can eject only one electron and excess energy of photon is converted into KE of photoelectron. 82. Answer (2)

87. Answer (4) 88. Answer (3) Cr has configuration 3d 5 4s 1 with six unpaired electrons. 89. Answer (1)

For atomic number 118 symbol is Uuo.

⎡1 1⎤ E  13.6Z2 ⎢ 2  2 ⎥ ⎢⎣ n1 n2 ⎥⎦

83. Answer (4) KE = h – h0

90. Answer (3)

 1 = 6 – h0

Fact.

 Work function = 5 eV

[ BIOLOGY ] 91. Answer (2) Kingdom Protista. 92. Answer (1) 93. Answer (4) *

Bracket fungi grows on tree trunk.

*

Trypanosoma - parasitic protozoan which causes sleeping sickness.

99. Answer (4) Motile structures are absent in the life cycle of cellular slime moulds. 100. Answer (4) (i) Protozoans; (ii) Amoeboid protozoans; (iii) Malaria 101. Answer (2) 102. Answer (1)

94. Answer (1)

*

Phytophthora - Late blight of potato

95. Answer (2)

*

Agaricus - Edible mushroom

*

Puccinia graminis tritici - Black rust

Frustule has thin overlapping shells. 96. Answer (4) Dinoflagellates 97. Answer (3) *

Planktons - Diatoms

*

Chlorophyll a - Diatoms; Dinoflagellates, Euglenoids.

*

Bioluminescence - Dinoflagellates

98. Answer (1)

103. Answer (1) of Ascomycetes and Basidiomycetes. Penicillium, Ustilago, Aspergillus, Agaricus and Neurospora 104. Answer (4) 105. Answer (2) Phycomycetes (Zygomycetes) 106. Answer (4) Alternaria is a fungi imperfecti in which sexual

6/8

Test - 2 (Code B) (Answers & Hints) reproduction is absent. 107. Answer (3)

All India Aakash Test Series for Medical-2016 129. Answer (1) Green algae

108. Answer (4)

130. Answer (2)

109. Answer (2)

131. Answer (2)

Basidiospores are produced by of basidiomycetes. 110. Answer (1)

134. Answer (4)

A - Neurospora B - Yeast

Given fish is Catla a bony fish.

113. Answer (2)

137. Answer (2)

Conidia are produced by of ascomycetes and deuteromycetes.

In Hemidactylus, fertilisation is internal.

115. Answer (3)

139. Answer (1)

Fungi

Chimaera is a cartilaginous fish having operculum.

116. Answer (2)

140. Answer (4)

117. Answer (3)

Vipera and Testudo belong to class reptilia.

118. Answer (4) Euglena - chl a, b

142. Answer (3)

120. Answer (4) *

Virus contain either DNA or RNA.

*

The protein coat made up of subunits called capsomeres.

Dysentry is caused by Entamoeba.

143. Answer (3)

145. Answer (1) Salpa is a chordata but not vertebrate.

122. Answer (2)

146 Answer (2)

Plant virus

147. Answer (2)

123. Answer (1)

Given animal is Petromyzon.

124. Answer (4) I, II, III, IV - Viroids

128. Answer (1)

Bony fishes excrete ammonia while cartilaginous fish excrete urea.

144. Answer (4)

121. Answer (3)

127. Answer (2)

141. Answer (3) Doliolum has open circulatory system.

119. Answer (2)

Prions

Cartilaginous fishes lack bony endoskeleton 138. Answer (3)

114. Answer (4)

126. Answer (4)

135. Answer (2) 136. Answer (4)

112. Answer (3)

125. Answer (3)

133. Answer (4) Lichens - Pioneer colonisers of barren rocks.

111. Answer (3)

III, IV

132. Answer (3)

- Virus

148. Answer (2) 149. Answer (3) Axonic knob has synaptic vesicles filled with neurotransmitter. 150. Answer (3) Given muscle is cardiac muscle. 151. Answer (4) Nissl’s granules are present in cell body and dendron.

7/8

All India Aakash Test Series for Medical-2016

Test - 2 (Code B) (Answers & Hints)

152. Answer (2)

170. Answer (3)

Bipolar neurons are present in retina of eye.

Hyaline cartilage present in nasal septum.

153. Answer (4)

171. Answer (2)

Given epithelium is compound epithelium.

Bone marrow is absent in dried bone.

154. Answer (3)

172. Answer (3)

Unicellular gland secrete mucus.

Astrocyte forms blood brain barrier.

155. Answer (4) Skeletal muscles (Biceps) are attached to bone.

173. Answer (4) Sebaceous gland is holocrine gland.

156. Answer (4)

174. Answer (2)

157. Answer (2) 158. Answer (1)

Connective tissue and muscle tissue originate from mesoderm.

Neurons are excitable cells.

175. Answer (2)

159. Answer (2) Adipose tissue stores fat.

Epithelial tissue is avascular.

160. Answer (3)

176. Answer (1)

161. Answer (3)

Ascidia is a urochordata/tunicate.

162. Answer (2)

177. Answer (2)

Given characters are of bone.

178. Answer (1)

163. Answer (3) Multiunit smooth muscles are present in muscle used in erection of body hair.

Sphenodon is a living fossil. 179. Answer (3)

164. Answer (2)

A - Cyclostomata – Cartilaginous endoskeleton

Clavicle is dermal bone. 165. Answer (2)

B - Osteichthyes – Bony endoskeleten and external fertilisation

Lamprey and Hag fish belong to cyclostomata. 166. Answer (4)

C - Reptilia

– Bony endoskeleton and internal fertilisation

D - Aves

– Bony endoskeleton and internal fertilisation

167. Answer (3) 168. Answer (4) 169. Answer (1) Tight junctions help to stop substances from leaking across the tissue.

180. Answer (2)



8/8

Bradypus has nine cervical vertebra.