ANSWERS · mv kx 2 220 0. 11 1 2222 ⎛⎞ ... All the options directly or indirectly affect the...

Test - 7 (Code-C) (Answers & Hints) All India Aakash Test Series for Medical-2017

1/8

1. (2)

2. (3)

3. (1)

4. (3)

5. (1)

6. (1)

7. (3)

8. (4)

9. (2)

10. (1)

11. (2)

12. (1)

13. (3)

14. (2)

15. (3)

16. (1)

17. (1)

18. (2)

19. (1)

20. (3)

21. (1)

22. (4)

23. (3)

24. (2)

25. (2)

26. (2)

27. (1)

28. (4)

29. (1)

30. (4)

31. (2)

32. (1)

33. (3)

34. (2)

35. (1)

36. (4)

37. (4)

38. (3)

39. (1)

40. (2)

41. (4)

42. (2)

43. (1)

44. (2)

45. (3)

46. (3)

47. (4)

48. (3)

49. (1)

50. (4)

51. (2)

52. (3)

53. (3)

54. (1)

55. (4)

56. (1)

57. (2)

58. (3)

59. (2)

60. (1)

61. (2)

62. (3)

63. (4)

64. (4)

65. (3)

66. (3)

67. (1)

68. (4)

69. (2)

70. (3)

71. (3)

72. (1)

73. (4)

74. (1)

75. (3)

76. (4)

77. (2)

78. (2)

79. (1)

80. (4)

81. (2)

82. (3)

83. (4)

84. (3)

85. (1)

86. (1)

87. (3)

88. (2)

89. (4)

90. (4)

91. (2)

92. (1)

93. (2)

94. (4)

95. (1)

96. (4)

97. (2)

98. (3)

99. (4)

100. (2)

101. (1)

102. (1)

103. (4)

104. (4)

105. (2)

106. (2)

107. (2)

108. (3)

109. (3)

110. (1)

111. (3)

112. (3)

113. (3)

114. (3)

115. (1)

116. (3)

117. (3)

118. (2)

119. (3)

120. (1)

121. (1)

122. (2)

123. (2)

124. (4)

125. (1)

126. (3)

127. (2)

128. (3)

129. (1)

130. (2)

131. (4)

132. (1)

133. (3)

134. (1)

135. (3)

136. (3)

137. (3)

138. (3)

139. (1)

140. (2)

141. (2)

142. (2)

143. (4)

144. (3)

145. (4)

146 (3)

147. (4)

148. (2)

149. (2)

150. (4)

151. (2)

152. (1)

153. (4)

154. (3)

155. (4)

156. (4)

157. (3)

158. (2)

159. (3)

160. (1)

161. (2)

162. (1)

163. (2)

164. (4)

165. (3)

166. (1)

167. (3)

168. (2)

169. (1)

170. (4)

171. (4)

172. (3)

173. (3)

174. (1)

175. (2)

176. (4)

177. (2)

178. (1)

179. (2)

180. (3)

ANSWERS

TEST - 7 (Code-C)

All India Aakash Test Series for Medical-2017

Test Date : 21-02-2016

User

Click Here For Code-D Solution

click here for code-D solution

All India Aakash Test Series for Medical-2017 Test - 7 (Code-C) (Answers & Hints)

2/8

Hints to Selected Questions

[ PHYSICS]

1. Answer (2)

= FaLbTc

[ML–3] = [MLT–2]a [L]b [T]c

a = 1

a + b = –3

c = 2

2. Answer (3)

3. Answer (1)

4sin( 90)

6

2cos

3

4

6

4. Answer (3)

21

2s vt at

210

2at vt s

22 0v as

5. Answer (1)

6. Answer (1)

7. Answer (3)

8. Answer (4)

F = (m1

+ m2

)g

= 0.2(3 + 5) × 10

9. Answer (2)

= tan

= angle of inclined plane

10. Answer (1)

5 m

1 kg

3 m

4 m

T cos = mg

cos

mgT

11. Answer (2)

12. Answer (1)

wF + w

g = 0, w

f = – w

g

w = ml(1 – cos 60°)g

13. Answer (3)

21(1 cos )

2 mgR mv ( = 60º)

14. Answer (2)

2 2

0 0

1 1

2 2mv kx

2

2 20

0

1 1 1

2 2 2 2

⎛ ⎞ ⎜ ⎟⎝ ⎠

xmv k mv

15. Answer (3)

��

dw F dr

(1, 3)

2 ˆ ˆ ˆ ˆ(3 4 )( ) ∫ ∫dw x i yj dxi dyj

(0, 2)

16. Answer (1)

1 2 2

1 1 2

1 2 1 2

( ) (1 )

( ) ( )

m em e mv u u

m m m m

2 1 1

2 2 1

1 2 1 2

( ) (1 )

( ) ( )

m em e m

v u u

m m m m

17. Answer (1)

0∑ yF

N1

– W = 0

N1

= W = 100 N

18. Answer (2)

I1

1

= I2

2

2

1

1

2I MR

2 2

2

1

2 I MR MR

2 1,

2

, 1 2

1

100 50%


3/8

19. Answer (1)

R

R

v0

2V0

212

2R gt

2R

tg

20. Answer (3)

21. Answer (1)

I = I0

+ mx2

Nature is parabolic

22. Answer (4)

25/2 mv

F rr

2 rT

v

T r 7/4

23. Answer (3)

24. Answer (2)

2e

v Rg

maxv Rg

max

2 ev

v

25. Answer (2)

26. Answer (2)

2 l

Tg

2

2( )

Rg g

R h

27. Answer (1)

23

23

23

A A

A

Ar = 0

28. Answer (4)

29. Answer (1)

21

2 P v

2P

v

30. Answer (4)

1 2t H H

31. Answer (2)

1⎛ ⎞ ⎜ ⎟

⎝ ⎠

P

B

32. Answer (1)

2 1/34 1⎡ ⎤ ⎣ ⎦E R T n

33. Answer (3)

f1

: f2

: f3

: = 1 : 3 : 5

34. Answer (2)

1 2 1 22 cos I I I I I

I = I

+ 4I

= 5 I

35. Answer (1)

v gx

v x

36. Answer (4)

⎛ ⎞ ⎜ ⎟⎝ ⎠

s

s

v vf f

v v

37. Answer (4)

Velocity of sound is independent to pressure so long

as temperature remains constant.

38. Answer (3)

2

1 2 10

1

10log⎛ ⎞

⎜ ⎟⎝ ⎠

IdB dB

I

39. Answer (1)

f = f1

– f2

1

Tf


4/8

40. Answer (2)

Loss or gain in time ‘t’

= 1

2t

41. Answer (4)

42. Answer (2)

mS1

(30 – 26) = mS2

(26 – 20)

[ CHEMISTRY]

43. Answer (1)

44. Answer (2)

1 2

1 2

1 2

1 2

P P

V V

n C n C

n C n C

45. Answer (3)

2 1 1 2

02 2

⎛ ⎞ ⎜ ⎟⎝ ⎠

T T T Tk T

46. Answer (3)

Cl

Cl

has zero dipole moment

47. Answer (4)

1 g O2

contain = A

1N 2

32

1 g O contain = A

1N

16

1 g O3

contain = A

1N 3

48

48. Answer (3)

Lesser the energy (n + l), more tightly bonded

electron.

49. Answer (1)

Pd46

is 4d105s0 and it belongs to 5th period.

50. Answer (4)

ClF3

is T-shaped but due to presence of lone pair

angle is not 90º.

51. Answer (2)

H SOn 1

2 4

Moles of H+ = 2

Heat released = 2 ×(– 57.3) = –114.6 kJ

52. Answer (3)

53. Answer (3)

Due to intramolecular H–Bonding.

54. Answer (1)

Ka

= 10–5 and pKa

= 5

HA + KOH KA + H O2

Initial 1 0 0 0

Final 1–1

3

1

3

1

3

moles

= 2

3mol

1

3mol

Final solution acts as buffer

a

[Salt]pH pK log

[Acid]

13

23

1pH 5 log 5 log

2

= 5 – log 2

55. Answer (4)

56. Answer (1)

[BF4

]– has sp3 hybridised B and BF3

has sp2

hybridised B.

57. Answer (2)

–NH2

increases the electron density on ring due to

+R effect thus increases the reactivity towards

electrophilic attack.

58. Answer (3)

Red lead is Pb3

O4

i.e. 2PbO.PbO2

59. Answer (2)

60. Answer (1)

61. Answer (2)

A + 2B C; Keq

. = K1

(i)

C + D 3A; Keq

. = K2

(ii)

6B + D 2C; Keq

. = K3

(iii)

[eq. (i) × 3] + [eq. (ii)] = eq. (iii)

3

1 2 3K K K


5/8

62. Answer (3)

CH –C –CH3 3

4°

CH3

CH3

1°

1°

1°

1°

4 — 1°C

1 — 4°C

0 — 2°C

0 — 3°C

63. Answer (4)

A compound is aromatic if it contains delocalised electrons (4n + 2) e– must be present.

64. Answer (4)

65. Answer (3)

66. Answer (3)

(1)CH|Cl

(2)CH

2

|Cl

(3) CH2

Cl|

(4) CH2

Cl

67. Answer (1)

O C C C O+2 +20

68. Answer (4)

69. Answer (2)

70. Answer (3)

He2– contains 4 electrons, all have different set of

quantum numbers.

71. Answer (3)

72. Answer (1)

Gypsum CaSO4

.2H2

O

Plaster of Paris 4 2

1CaSO H O

2

73. Answer (4)

74. Answer (1)

H

H

H

H H

H

Banana bond (2e – 3c bond)

–

75. Answer (3)

From F to Br, backbonding with central boron

decreases, so acidic strength increases.

76. Answer (4)

77. Answer (2)

78. Answer (2)

Weight of metal oxide E 8

Weight of metal E

100 32 E 8

100 E

E = 25

79. Answer (1)

PV = nRT

n P

V RT

80. Answer (4)

Kjeldahl's method is not applicable to nitro

compounds, azo compounds and nitrogen in ring.

81. Answer (2)

Li/NH3

(liq.) is responsible for partial reduction and

gives trans product.

82. Answer (3)

Out of –NH2

and –CH3

, –NH2

is more active due to

+R effect. So –NH2

group decides the position of

Br+.

83. Answer (4)

84. Answer (3)

85. Answer (1)

86. Answer (1)

S > Se > Te > Po > O

87. Answer (3)

4O + 2H O 3O + 4OH2 2 2

– –

–20–1/2

Oxidation

Reduction

O. No.

88. Answer (2)

89. Answer (4)

Volume strength = 5.6 × N

= 11.2 × M

90. Answer (4)


6/8

[ BIOLOGY

]

91. Answer (2)

Presynthetic phase (G1

) = 40 Pg = 2C

G2

= 80 Pg = 4C

Product of meiosis = 20 Pg (1C)

92. Answer (1)

93. Answer (2)

94. Answer (4)

95. Answer (1)

Gloriosa belongs to family Liliaceae.

96. Answer (4)

97. Answer (2)

98. Answer (3)

99. Answer (4)

Rhizome is absent in Selaginella.

100. Answer (2)

Spirulina and Oscillatoria both are prokaryotes.

101. Answer (1)

102. Answer (1)

Nitrosomonas, Ferrobacillus and Nitrococcus.

103. Answer (4)

104. Answer (4)

All are bryophytes.

105. Answer (2)

Polysiphonia and Gracilaria belong to red algae.

106. Answer (2)

107. Answer (2)

Anabaena is cyanobacteria.

108. Answer (3)

109. Answer (3)

Smooth endoplasmic reticulum.

110. Answer (1)

111. Answer (3)

Number of bacterial cells = 2n

Total time in minute (min)n

Time of binary fission (min)

So, 180

n 630

Number of bacterial cells = 109 × 26

= 64 × 109 cells

112. Answer (3)

9 doublets and two singlets of microtubules.

113. Answer (3)

Maize is C4

plant.

114. Answer (3)

115. Answer (1)

116. Answer (3)

117. Answer (3)

118. Answer (2)

119. Answer (3)

120. Answer (1)

121. Answer (1)

122. Answer (2)

123. Answer (2)

124. Answer (4)

125. Answer (1)

126. Answer (3)

127. Answer (2)

128. Answer (3)

The LHC are made up of hundreds of pigment

molecules bound to proteins.

129. Answer (1)

130. Answer (2)

131. Answer (4)

Biological names are generally in Latin and written

in italics.

132. Answer (1)

In Morels Ascocarps are developed.

133. Answer (3)

134. Answer (1)

135. Answer (3)

(b) < 1%

136. Answer (3)

Ascaris – Only longitudinal muscle, pseudocoelomate

Apis – Coelomic fluid does not act as skeleton.

It is not the 1st category where metamers

appear.

Salpa – Urochordate


7/8

137. Answer (3)

Water canal system – Characteristic of poriferans;

mesodermal skeleton and deuterostomate also exist

in chordates.

138. Answer (3)

Betta – Class osteichthyes

Bufo – Class amphibian

139. Answer (1)

Air sacs are non-vascular

140. Answer (2)

Substances would move most rapidly through

squamous cells, therefore they are so thin.

141. Answer (2)

It is the loose C.T. that connects skin to underlying

tissues.

142. Answer (2)

143. Answer (4)

Lateral heart exist in segment between 9th -13th

segment.

144. Answer (3)

145. Answer (4)

146. Answer (3)

Primary structure determines the sequence of amino

acids in protein chain.

147. Answer (4)

148. Answer (2)

All the options directly or indirectly affect the RBC

production but cortisol also affect WBC count.

149. Answer (2)

150. Answer (4)

Peptide hormones are water soluble so they cannot

cross plasma membrane, therefore send the

message through second messenger system.

151. Answer (2)

152. Answer (1)

Nucleus pulposus - remnants of notochord.

153. Answer (4)

154. Answer (3)

Red muscle fibres respond slowly and have a long

latency, are adapted for long slow, posture

maintaining contractions.

155. Answer (4)

Femur articulates with acetabulum, patella and tibia

but patella is sesamoid bone.

156. Answer (4)

Osteoarthritis – Degenerative joint disease

Osteoporosis – Bone loses minerals

Rheumatoid arthritis – autoimmune disease

Gouty arthritis – Defect in purine metabolism that

causes an excess of uric acid and its salts (urates)

formation.

157. Answer (3)

158. Answer (2)

Vomit centre found in medulla.

159. Answer (3)

Muscularis externa (circular muscle) modify to make

sphincter.

160. Answer (1)

Trypsin is strongest proteolytic enzymes.

161. Answer (2)

Triglycerides are not water soluble; micells exist in

lumen of intestine; chylomicrons are water soluble

molecules which by exocytosis enter into lacteals.

162. Answer (1)

163. Answer (2)

This is inspiratory capacity.

164. Answer (4)

More decrease in pH, higher will be rate of

dissociation of oxyhaemoglobin.

165. Answer (3)

166. Answer (1)

Due to closing of AV valve, first heart sound ‘Lub’ is

created and second ‘Dub’; is due to closing of

semilunar valve, third and fourth are not audible with

stethoscope.

167. Answer (3)

168. Answer (2)

Na+ & Cl– ions result in increase in concentration of

ions which reabsorb water.

169. Answer (1)

Osmolarity of urine is almost 4 times higher than

blood.

170. Answer (4)

2nd and 3rd options are correct.


8/8

171. Answer (4)

All these bonds are formed by elimination of water

molecule.

172. Answer (3)

C–C

|X Y

Lyase

X–Y + C = C

|

It belongs to class IV

173. Answer (3)

174. Answer (1)

Amygdala is defense castle of body.

� � �

175. Answer (2)

Oculomotor is related with movement of eyeball and

power of accommodation.

176. Answer (4)

177. Answer (2)

178. Answer (1)

Towards round window, basilar membrane is more

stiff.

179. Answer (2)

It is cardiac arrest as there is no conduction.

180. Answer (3)

Test - 7 (Code-D) (Answers & Hints) All India Aakash Test Series for Medical-2017

1/8

1. (1)

2. (4)

3. (3)

4. (4)

5. (2)

6. (4)

7. (3)

8. (1)

9. (2)

10. (2)

11. (3)

12. (4)

13. (1)

14. (3)

15. (4)

16. (2)

17. (3)

18. (4)

19. (3)

20. (4)

21. (4)

22. (4)

23. (1)

24. (2)

25. (3)

26. (3)

27. (3)

28. (4)

29. (3)

30. (3)

31. (1)

32. (4)

33. (1)

34. (3)

35. (4)

36. (3)

37. (4)

38. (2)

39. (1)

40. (3)

41. (3)

42. (1)

43. (3)

44. (1)

45. (4)

46. (2)

47. (2)

48. (4)

49. (1)

50. (3)

51. (3)

52. (1)

53. (2)

54. (1)

55. (2)

56. (4)

57. (3)

58. (4)

59. (4)

60. (2)

61. (1)

62. (3)

63. (4)

64. (3)

65. (1)

66. (1)

67. (4)

68. (2)

69. (3)

70. (1)

71. (1)

72. (4)

73. (4)

74. (1)

75. (4)

76. (3)

77. (4)

78. (1)

79. (2)

80. (3)

81. (2)

82. (3)

83. (1)

84. (1)

85. (4)

86. (2)

87. (3)

88. (1)

89. (4)

90. (3)

91. (3)

92. (3)

93. (1)

94. (3)

95. (2)

96. (4)

97. (3)

98. (1)

99. (4)

100. (1)

101. (3)

102. (4)

103. (4)

104. (4)

105. (3)

106. (3)

107. (1)

108. (4)

109. (1)

110. (1)

111. (3)

112. (1)

113. (1)

114. (1)

115. (1)

116. (3)

117. (1)

118. (1)

119. (4)

120. (4)

121. (4)

122. (2)

123. (2)

124. (3)

125. (3)

126. (4)

127. (2)

128. (1)

129. (4)

130. (2)

131. (3)

132. (2)

133. (4)

134. (3)

135. (4)

136. (3)

137. (4)

138. (3)

139. (4)

140. (2)

141. (4)

142. (3)

143. (1)

144. (1)

145. (4)

146. (4)

147. (3)

148. (4)

149. (1)

150. (3)

151. (1)

152. (2)

153. (4)

154. (3)

155. (4)

156. (3)

157. (1)

158. (4)

159. (1)

160. (2)

161. (2)

162. (1)

163. (2)

164. (3)

165. (4)

166. (4)

167. (4)

168. (4)

169. (2)

170. (1)

171. (4)

172. (1)

173. (2)

174. (4)

175. (4)

176. (4)

177. (3)

178. (1)

179. (1)

180. (1)

ANSWERS

TEST - 7 (Code-D)

All India Aakash Test Series for Medical-2017

Test Date : 21-02-2016

User

Click Here For Code-D Solution

click here for code-C solution

All India Aakash Test Series for Medical-2017 Test - 7 (Code-D) (Answers & Hints)

2/8

Hints to Selected Questions

[ PHYSICS]

1. Answer (1)

2 1 1 2

02 2

⎛ ⎞ ⎜ ⎟⎝ ⎠

T T T Tk T

2. Answer (4)

1 2

1 2

1 2

1 2

P P

V V

n C n C

n C n C

3. Answer (3)

4. Answer (4)

mS1

(30 – 26) = mS2 (26 – 20)

5. Answer (2)

6. Answer (4)

Loss or gain in time ‘t’

= 1

2t

7. Answer (3)

f = f1 – f

2

1

Tf

8. Answer (1)

2

1 2 10

1

10log⎛ ⎞

⎜ ⎟⎝ ⎠

IdB dB

I

9. Answer (2)

Velocity of sound is independent to pressure so long

as temperature remains constant.

10. Answer (2)

⎛ ⎞ ⎜ ⎟⎝ ⎠

s

s

v vf f

v v

11. Answer (3)

v gx

v x

12. Answer (4)

1 2 1 22 cos I I I I I

I = I + 4I

= 5 I

13. Answer (1)

f1 : f

2 : f

3 : = 1 : 3 : 5

14. Answer (3)

2 1/34 1⎡ ⎤ ⎣ ⎦E R T n

15. Answer (4)

1⎛ ⎞ ⎜ ⎟

⎝ ⎠

P

B

16. Answer (2)

1 2t H H

17. Answer (3)

21

2 P v

2P

v

18. Answer (4)

19. Answer (3)

23

23

23

A A

A

Ar = 0

20. Answer (4)

2 l

Tg

2

2( )

Rg g

R h

21. Answer (4)

22. Answer (4)

2e

v Rg

maxv Rg

max

2 ev

v


3/8

23. Answer (1)

24. Answer (2)

25/2 mv

F rr

2 rT

v

T r7/4

25. Answer (3)

I = I0 + mx

2

Nature is parabolic

26. Answer (3)

27. Answer (3)

R

R

v0

2V0

212

2R gt

2R

tg

28. Answer (4)

I1

1 = I

2

2

2

1

1

2I MR

2 2

2

1

2 I MR MR

2 1,

2

, 1 2

1

100 50%

29. Answer (3)

0∑ yF

N1 – W = 0

N1 = W = 100 N

30. Answer (3)

1 2 2

1 1 2

1 2 1 2

( ) (1 )

( ) ( )

m em e mv u u

m m m m

2 1 1

2 2 1

1 2 1 2

( ) (1 )

( ) ( )

m em e m

v u u

m m m m

31. Answer (1)

��

dw F dr

(1, 3)

2 ˆ ˆ ˆ ˆ(3 4 )( ) ∫ ∫dw x i yj dxi dyj

(0, 2)

32. Answer (4)

2 2

0 0

1 1

2 2mv kx

2

2 20

0

1 1 1

2 2 2 2

⎛ ⎞ ⎜ ⎟⎝ ⎠

xmv k mv

33. Answer (1)

21(1 cos )

2 mgR mv ( = 60º)

34. Answer (3)

wF + w

g = 0, w

f = – w

g

w = ml(1 – cos 60°)g

35. Answer (4)

36. Answer (3)

5 m

1 kg

3 m

4 m

T cos = mg

cos

mgT

37. Answer (4)

= tan = angle of inclined plane

38. Answer (2)

F = (m1 + m

2)g

= 0.2(3 + 5) × 10

39. Answer (1)

40. Answer (3)

41. Answer (3)

42. Answer (1)

21

2s vt at

210

2at vt s

22 0v as


4/8

43. Answer (3)

4sin( 90)

6

2cos

3

4

6

44. Answer (1)

[ CHEMISTRY]

46. Answer (2)

47. Answer (2)

Volume strength = 5.6 × N

= 11.2 × M

48. Answer (4)

49. Answer (1)

4O + 2H O 3O + 4OH2 2 2

– –

–20–1/2

Oxidation

Reduction

O. No.

50. Answer (3)

S > Se > Te > Po > O

51. Answer (3)

52. Answer (1)

53. Answer (2)

54. Answer (1)

Out of –NH2 and –CH

3, –NH

2 is more active due to

+R effect. So –NH2 group decides the position of

Br+.

55. Answer (2)

Li/NH3(liq.) is responsible for partial reduction and

gives trans product.

56. Answer (4)

Kjeldahl's method is not applicable to nitro

compounds, azo compounds and nitrogen in ring.

57. Answer (3)

PV = nRT

n P

V RT

58. Answer (4)

Weight of metal oxide E 8

Weight of metal E

100 32 E 8

100 E

E = 25

59. Answer (4)

60. Answer (2)

61. Answer (1)

From F to Br, backbonding with central boron

decreases, so acidic strength increases.

62. Answer (3)

H

H

H

H H

H

Banana bond (2e – 3c bond)

–

63. Answer (4)

64. Answer (3)

Gypsum CaSO4.2H

2O

Plaster of Paris 4 2

1CaSO H O

2

65. Answer (1)

66. Answer (1)

He2– contains 4 electrons, all have different set of

quantum numbers.

67. Answer (4)

68. Answer (2)

69. Answer (3)

O C C C O+2 +20

45. Answer (4)

= FaLbTc

[ML–3] = [MLT–2]a [L]b [T]c

a = 1

a + b = –3

c = 2


5/8

70. Answer (1)

(1)CH|Cl

(2)CH

2

|Cl

(3) CH2

Cl|

(4) CH2

Cl

71. Answer (1)

72. Answer (4)

73. Answer (4)

A compound is aromatic if it contains delocalised electrons (4n + 2) e– must be present.

74. Answer (1)

CH –C –CH3 3

4°

CH3

CH3

1°

1°

1°

1°

4 — 1°C

1 — 4°C

0 — 2°C

0 — 3°C

75. Answer (4)

A + 2B C; Keq

. = K1

(i)

C + D 3A; Keq

. = K2

(ii)

6B + D 2C; Keq

. = K3

(iii)

[eq. (i) × 3] + [eq. (ii)] = eq. (iii)

3

1 2 3K K K

76. Answer (3)

77. Answer (4)

78. Answer (1)

Red lead is Pb3O

4 i.e. 2PbO.PbO

2

79. Answer (2)

–NH2 increases the electron density on ring due to

+R effect thus increases the reactivity towards

electrophilic attack.

80. Answer (3)

[BF4]– has sp

3 hybridised B and BF3 has sp

2

hybridised B.

81. Answer (2)

82. Answer (3)

Ka = 10–5 and pK

a = 5

HA + KOH KA + H O2

Initial 1 0 0 0

Final 1–1

3

1

3

1

3

moles

= 2

3mol

1

3mol

Final solution acts as buffer

a

[Salt]pH pK log

[Acid]

13

23

1pH 5 log 5 log

2

= 5 – log 2

83. Answer (1)

Due to intramolecular H–Bonding.

84. Answer (1)

85. Answer (4)

H SOn 1

2 4

Moles of H+ = 2

Heat released = 2 ×(– 57.3) = –114.6 kJ

86. Answer (2)

ClF3 is T-shaped but due to presence of lone pair

angle is not 90º.

87. Answer (3)

Pd46

is 4d105s

0 and it belongs to 5th period.

88. Answer (1)

Lesser the energy (n + l), more tightly bonded

electron.

89. Answer (4)

1 g O2 contain = A

1N 2

32

1 g O contain = A

1N

16

1 g O3 contain = A

1N 3

48

90. Answer (3)

Cl

Cl

has zero dipole moment


6/8

[ BIOLOGY

]

91. Answer (3)

(b) < 1%

92. Answer (3)

93. Answer (1)

94. Answer (3)

In Morels Ascocarps are developed.

95. Answer (2)

Biological names are generally in Latin and written

in italics.

96. Answer (4)

97. Answer (3)

98. Answer (1)

The LHC are made up of hundreds of pigment

molecules bound to proteins.

99. Answer (4)

100. Answer (1)

101. Answer (3)

102. Answer (4)

103. Answer (4)

104. Answer (4)

105. Answer (3)

106. Answer (3)

107. Answer (1)

108. Answer (4)

109. Answer (1)

110. Answer (1)

111. Answer (3)

112. Answer (1)

113. Answer (1)

Maize is C4 plant.

114. Answer (1)

9 doublets and two singlets of microtubules.

115. Answer (1)

Number of bacterial cells = 2n

Total time in minute (min)n

Time of binary fission (min)

So, 180

n 630

Number of bacterial cells = 109 × 26

= 64 × 109 cells

116. Answer (3)

117. Answer (1)

Smooth endoplasmic reticulum.

118. Answer (1)

119. Answer (4)

Anabaena is cyanobacteria.

120. Answer (4)

121. Answer (4)

Polysiphonia and Gracilaria belong to red algae.

122. Answer (2)

All are bryophytes.

123. Answer (2)

124. Answer (3)

Nitrosomonas, Ferrobacillus and Nitrococcus.

125. Answer (3)

126. Answer (4)

Spirulina and Oscillatoria both are prokaryotes.

127. Answer (2)

Rhizome is absent in Selaginella.

128. Answer (1)

129. Answer (4)

130. Answer (2)

131. Answer (3)

Gloriosa belongs to family Liliaceae.

132. Answer (2)

133. Answer (4)

134. Answer (3)

135. Answer (4)

Presynthetic phase (G1) = 40 Pg = 2C

G2 = 80 Pg = 4C

Product of meiosis = 20 Pg (1C)

136. Answer (3)

137. Answer (4)

It is cardiac arrest as there is no conduction.

138. Answer (3)

Towards round window, basilar membrane is more

stiff.

139. Answer (4)


7/8

140. Answer (2)

141. Answer (4)

Oculomotor is related with movement of eyeball and

power of accommodation.

142. Answer (3)

Amygdala is defense castle of body.

143. Answer (1)

144. Answer (1)

C–C

|X Y

Lyase

X–Y + C = C

|

It belongs to class IV

145. Answer (4)

All these bonds are formed by elimination of water

molecule.

146. Answer (4)

2nd and 3rd options are correct.

147. Answer (3)

Osmolarity of urine is almost 4 times higher than

blood.

148. Answer (4)

Na+ & Cl– ions result in increase in concentration of

ions which reabsorb water.

149. Answer (1)

150. Answer (3)

Due to closing of AV valve, first heart sound ‘Lub’ is

created and second ‘Dub’; is due to closing of

semilunar valve, third and fourth are not audible with

stethoscope.

151. Answer (1)

152. Answer (2)

More decrease in pH, higher will be rate of

dissociation of oxyhaemoglobin.

153. Answer (4)

This is inspiratory capacity.

154. Answer (3)

155. Answer (4)

Triglycerides are not water soluble; micells exist in

lumen of intestine; chylomicrons are water soluble

molecules which by exocytosis enter into lacteals.

156. Answer (3)

Trypsin is strongest proteolytic enzymes.

157. Answer (1)

Muscularis externa (circular muscle) modify to make

sphincter.

158. Answer (4)

Vomit centre found in medulla.

159. Answer (1)

160. Answer (2)

Osteoarthritis – Degenerative joint disease

Osteoporosis – Bone loses minerals

Rheumatoid arthritis – autoimmune disease

Gouty arthritis – Defect in purine metabolism that

causes an excess of uric acid and its salts (urates)

formation.

161. Answer (2)

Femur articulates with acetabulum, patella and tibia

but patella is sesamoid bone.

162. Answer (1)

Red muscle fibres respond slowly and have a long

latency, are adapted for long slow, posture

maintaining contractions.

163. Answer (2)

164. Answer (3)

Nucleus pulposus - remnants of notochord.

165. Answer (4)

166. Answer (4)

Peptide hormones are water soluble so they cannot

cross plasma membrane, therefore send the

message through second messenger system.

167. Answer (4)

168. Answer (4)

All the options directly or indirectly affect the RBC

production but cortisol also affect WBC count.

169. Answer (2)

170. Answer (1)

Primary structure determines the sequence of amino

acids in protein chain.

171. Answer (4)

172. Answer (1)


8/8

173. Answer (2)

Lateral heart exist in segment between 9th -13th

segment.

174. Answer (4)

175. Answer (4)

It is the loose C.T. that connects skin to underlying

tissues.

176. Answer (4)

Substances would move most rapidly through

squamous cells, therefore they are so thin.

177. Answer (3)

Air sacs are non-vascular

� � �

178. Answer (1)

Betta – Class osteichthyes

Bufo – Class amphibian

179. Answer (1)

Water canal system – Characteristic of poriferans;

mesodermal skeleton and deuterostomate also exist

in chordates.

180. Answer (1)

Ascaris – Only longitudinal muscle, pseudocoelomate

Apis – Coelomic fluid does not act as skeleton.

It is not the 1st category where metamers

appear.

Salpa – Urochordate

ANSWERS · mv kx 2 220 0. 11 1 2222 ⎛⎞ ... All the options directly or indirectly affect the...

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