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Test - 8 (Code C) (Answers) All India Aakash Test Series for Medical-2019

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Test Date : 01/04/2018

ANSWERS

TEST - 8 (Code C)

All India Aakash Test Series for Medical - 2019

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All India Aakash Test Series for Medical-2019 Test - 8 (Code C) (Hints)

2/8

HINTS

PHYSICS

1. l maLbc

2.M

dV

d% = M% + V%

.01 .1100

25 5

⎛ ⎞ ⎜ ⎟⎝ ⎠

3.2 1

11 2 1

T⎛ ⎞ ⎜ ⎟

⎝ ⎠

4. Vrg

sin30° = 5

30° Vrg

Vrm

V mg

= 5 km/hr

5.10sin45

R

6. m1 T

m2g = 4T

T m1g

7. h = e4H

9. outermost

= innermost

0

6

V V

L L

10. k = wtotal

210 (1)(20) (18)

2R

g

12.

2 2

21 11

2 3

⎛ ⎞ ⎛ ⎞ ⎜ ⎟ ⎜ ⎟⎝ ⎠ ⎝ ⎠

14. rms

Tv

M

16.2S

Hgl

S = .075 N/m

= 103 kg/m3

l = 10–3 m

18.21

22

e

GMmmv

a

⎛ ⎞ ⎜ ⎟⎝ ⎠

19. r f �

��

ˆ ˆ0 (2 2 )r i j �

ˆ3f k �

20. I1

1 = I

2

2

2 2

2 2 1 1

1 1

2 2x I I

22.45 8 32

105 8 212 32

F

24. Stopping distance =

2

2

v

a

25. 4(1 2 )d

tdt

= I = I4(1 – 2t)

Slope < 0, y intercept > 0

26. 2, 3 10dx dy

tdt dt

2 2(2) (3) , 0v t

27. For open = ( 1)

2

n vl

For close = (2 1)

4

n vl

28.C

v uf f

v u

v = 330 m/s

480Hzf

f = 44 Hz

Test - 8 (Code C) (Hints) All India Aakash Test Series for Medical-2019

3/8

29.1

v

RC C

n

50

2v

C C R

30. 80 m < 16(50)

32. app actual1

2

dww w

ds

⎛ ⎞ ⎜ ⎟⎝ ⎠

33.4P

V r⎛ ⎞ ⎜ ⎟⎝ ⎠l

34. A1V

1 = A

2V

2

35.v

F AY

⎛ ⎞ ⎜ ⎟⎝ ⎠

36.60 40 60 40

107 2

k ⎛ ⎞ ⎜ ⎟⎝ ⎠

40 4010

7 2

T Tk

⎛ ⎞ ⎜ ⎟⎝ ⎠

38. aaa

sinY a t kx

sin2

Y a t kx⎛ ⎞ ⎜ ⎟⎝ ⎠

sinY a t kx

39. y = .02sin(x + 30t)

v = 30 m/s

= 1.3 × 10–4

kg/m

Tv

40. Using conservation of momentum

m1

u1

m2

u2

m1 = m

2 = 1kg

u1 = 5 m/s, u

2 = 5 m/s

Initial momentum

Pi = (5 × 1) – (5 × 1) 0

Final momentum

Pf = (m

1 + m

2)v = 0

2v = 0

v = 0

41. 2I

Tmgr

42.

2

2 2

2

sin 2

51

mg kf

R R

k

2

2

sin

1

mga

k

R

45.21

(.8) 22

U k

2m

Tk

CHEMISTRY

46. Empirical formula = C5H

8O

4 NNa

Molecular wt = 84.5 × 2 = 169

Empirical formula wt = 5 × 12 + 8 × 1 + 16 × 4 +

14 × 1 + 23 × 1 = 169

169n 1

169

Molecular formula = C5H

8O

4 NNa

Atomicity = 5 + 8 + 4 + 1 + 1 = 19

47. Al2(SO

4)3 xH

2O

Al% = 8.1 = 54

100342 18x

x = 18

For two Al atom, number of H2O molecule = 18

so, for one Al atom, number of H2O molecule = 9

48.3 3 3 4

2 2 4 3 2Fe (C O ) Fe CO

6C+3 6C+4 + 6e

n-factor = 6 × 1 = 6

49. Number of revolutions per second

2

3

Z

n

2

2 2

2 3 2 3

He He Li

3 2 3 2

Li He Li

n Z n 2 2 32

n n Z 3 3 243


4/8

50. After electrophilic attack in pyrrole intermediate

cation (-complex) has complete octet in one of the

resonating structure thus it is more reactive. While

in pyridine due to greater electronegativity of N-atom,

stability of intermediate cation decreases.

So, electrophilic reactivity order is:

Pyrrole > Benzene > Pyridine

N

H

E

N

H

E

N

HComplete octet

E

51. Bridgehead carbocation is less stable.

52. Twist boat is more stable than boat form, as boat

has eclipsed form, while twist boat has partially

eclipsed structure and reduces flagpole interaction.

53.

6 e

Aromatic

–

N

H6 e

Aromatic

–

sp3

– carbon

Non-planar(Non-aromatic)

B

H4 e

Antiaromatic

–

N

, , ,

6 eAromatic

–

4 eAntiaromatic

–

HH

10 e ,non-planar, non-aromatic

–

2 eAromatic

–

, , ,

2 e

Aromatic

–

56. NH3

M2

.40 ml H SO2 4

N1

V1

add H O2

N , (V) = 500 ml,2

N , 50 ml 40 ml,2

M20

NaOHV

2V

3N

3

O.C.

0.7 g

Normality of 500 mL solution

N2V

2 = N

3V

3

N2 × 50 =

11 40

20

⎛ ⎞ ⎜ ⎟⎝ ⎠

N2 =

1

25

m eq. of NH3 = N

1V

1 – N

2V

= 1 1

2 40 5002 25

⎛ ⎞ ⎜ ⎟⎝ ⎠

= 40 – 20 = 20

%N = 3

1.4 meq. of NH

w

=

1.4 2040%

0.7

57. 2ExcessNaCNS 2Na NaCN Na S

So, NaCNS will not be formed. Kjeldhal method can

be used for aniline and Carius method is not good

for I, as AgI may be slightly soluble in HNO3 and

some I2 may be present rather than AgI.

58. (A)

C – CH3

O

(B)

CH – CH2 3

(C)

COOH

60. 1°, 2° & 3° amines are functional isomers of each

other.

61.CH OH

2

H+

CH2 CH

2

HCl

2

500°C

Cl

–H

–H O2

(via free radical allylic substitution)

62.CH C CH

3

NaCH C C Na

3

– + CH Br3 CH C C CH

3 3

(A) (B)

CH CH C CH3 2

(C)

C H

But–1–Yne.4 6

CH CH C CH3 2 3

O

NaNH2

H O

H , Hg

2

+ 2+

C H

But–2–Yne4 6

CH C C C3

H3

(B)

64. CH CH

Ni(CN)2

6 e , Aromatic,Diamagnetic –

8 e , non-planar,tub-shaped.Non-aromatic

–

Fe


5/8

65.

CH3

CH(CH )3 2

NO2

+

CH3

CH(CH )3 2

NO2

(A)

CH3

CH(CH )3 2

Cl+

CH3

CH(CH )3 2

Cl

(B)

–CH3 is more ring activating than –CH(CH

3)2.

68.2

1

eq

eq 1 2

K H 1 1log

K 2.303R T T

⎡ ⎤ ⎢ ⎥⎣ ⎦

3

15 H 1 1log

20 2.303 2 10 300 350

⎡ ⎤ ⎢ ⎥ ⎣ ⎦

H 500.12

2.303 0.002 300 350

H = –1.2 kcal

69.0.5

2 22HI H I

initial mole 1 0 0

1 1 1final mole 1

2 4 4

��⇀↽��

eq 2

1 1

14 4K

41

2

⎛ ⎞⎜ ⎟⎝ ⎠

70. Initially

3CH COOH

2000 1n 1

1000 2

3CH COONa

1000n 1 1

1000

1

[Salt]pH pKa log

[Acid]

14.76 log 4.76.

1

Moles of NaOH added = 1000 1

0.51000 2

So, reaction is

3 3 2CH COOH NaOH CH COONa H O

t 0, mole 1 0.5 1 0

final, mole 1 0.5 0.5 0.5 1 0.5

0.5 0 1.5

2

1.5pH 4.76 log

0.5

= 4.76 + log3

pH2 = pH

1 + 0.4771

pH = pH2 – pH

1 = 0.4771

% change = 0.477

100 10%4.76

�

71. 2

2 2 2Hg I (s) Hg (aq.) 2I (aq.)

s 2s

��⇀↽��

22

sp 2K Hg I

⎡ ⎤ ⎣ ⎦ = (s)(2s)2 = 4s3

72. Na NH H P O4 4

+1 +1 +1 –2×4x

3(+1) + x + 4(–2) = 0

x = +5

73. Species Bond order

N2

3

2N

2.5

2N

2.5

O2

2

2O

2.5

2O

1.5

H2

1

2H

0.5

2H

0.5

If bond order is same then species having less e– in

ABMO are more stable.

74.4 2 2 2

3

CH 2O CO 2H O

%s 25% %s 50%

character character

sp sp

Change = 50 – 25 = 25

% change = 25

100 100%25


6/8

75.

F

Xe

F

= 0

F

P

F

= 0

Cl

Cl

Cl

Cl

C

Cl

= 0

ClCl

76. O S Te

3.5 2.5 2.01

77. CO2, N

2O

5 Acidic

In2O

3 basic

78. It is highly soluble in hot water.

80. Due to high lattice energy.

81. Area under curve represents number of molecules

so, on increasing temperature number of molecules

cannot change, so area remains constant.

82.2 2

2

O O He He

mix

O He

n M n M

M

n n

1 32 1 418

1 1

2OM = 32

2

2

O mix

mix O mix

r M x 18

r M r 32 ⇒

mix

mix

x 9 4xr

r 16 3 ⇒

83.

2

2

Li

2

He

IE 3

IE 2

2 He

122.4 9

(IE ) 4

(IE2)He

= 54.4 eV/atom

84. Ti(22) = 1s2 2s2 2p6 3s2 3p6 4s2 3d2

Ti2+ = 1s2 2s2 2p6 3s2 3p6 4s0 3d2

Number of e– in s-orbital = 2 + 2 + 2 = 6

d-orbitals = 2

Ratio = 2 1

6 3

85. 2z

d does not have nodal planes.

86. Fact.

87. 2 2 2 2 2

5C H O 2CO H O

2

or

H C C H + (O O)52

2[O C O] + H O H

HC =

reactant productB E B E ∑ ∑

= (C C) (C H) (O O)

5BE 2BE BE

2

⎡ ⎤ ⎢ ⎥⎣ ⎦

(C O) (O H)[4 B E 2 B E ]

= 5

800 2 410 500 (4 700 2 430)2

⎛ ⎞ ⎜ ⎟⎝ ⎠

= –790 kJ/mol

Calorific value = C

H 79030.38 kJ/gm

Molar mass 26

88. Due to greater hydration enthalpy of F–.

89. In compression entropy decreases.

90. Molar entropy is intensive, while entropy is extensive.

BIOLOGY

91. (P) Inner mitochondrial membrane

(Q) Matrix

(R) F0 = Intrinsic protein

(S) F1 = Extrinsic protein, catalytic centre

92. Parenchyma

93. Circular DNA

94. • Phosphopyruvic dikinase in mesophyll cells

• BSCs have maximum chloroplasts.

95. Slime moulds - true wall in spores

96. Hormones, pH, ions

External factors m shock, humid environments,

temperature.

97. Maltose = glucose + glucose

= 36 + 36 = 72 ATP

98. Passive water absorption

99. Anaphase-I

100. Cyclic photophosphorylation

101. Ascomycetes, Basidiomycetes

102. High O2, high temperature, high light intensity

103. n = 20

Secondary protonema (n) = 20

Oosphere (n) = 20

Leaf cell (n) = 20

Spore mother cell (2n) = 40

104. Boron


7/8

105. Red algae

106. (1) Synergistic (2) Antagonistic

107. Movement of H2O from high to low .

108. To restore high nucleocytoplasmic ratio

109. Sporophyte – free living

Gametophytes – parasites on sporophyte

110. Tobacco – Polyandrous

Tulip – Epitepalous/Epiphyllous

Maize – Polyandrous

111. • Axoneme is the part of cilia & flagella.

• Hub is the central part of centrioles.

112. Haplontic life cycle

114. Synthetic phase

115. Rhizobium, contributes haeme part of LHb.

117. Nepenthes is a pitcher plant not venus flytrap.

118. Fimbriae – Small bristle-like structures

119. Monocot stem and leaf

120. Glycolipid & glycoprotein at outer surface

121. (b) Many ovules

(c) Berry or capsule

122. Stroma

124. Underground stems

125. Metabolic reactions are also possible at outside the

cells.

126. Scrapie in sheep, Kuru and CFJ in man

127. Aggregate fruit

128. Polar transport

129. Selaginella - b, c, e

Pinus - b, c, d, e

131. In grass stem

132. Archaeae, Bacteria domains

134. Rice : Oryza sativa (monocot)

Mango : Mangifera indica (dicot)

135. Heart wood provides mechanical strength

136. Reptiles are cold blooded animals. Water tight shell

is present in both birds & reptiles.

137. In coelenterates, skeletal system is absent except

anthozoans or corals which have a calcium

carbonate skeleton known as corallite.

138. In chondrichthyes fertilisation is internal and they are

usually ovoviviparous.

139. Some mammals are oviparous like Ornithorhynchus,

hence lack placenta.

140. Tetrapods include amphibians, reptiles, aves and

mammals.

Pisces is the 1st group with jaws in vertebrates

(Gnathostomes)

141. Arthropods have open circulatory system.

142. In cyclostomes, closed circulatory system is found.

143. Wuchereria is unsegmented. Both animals have tube

within tube plan, are parasites and are protostomes.

144. Connective tissue is the most widely distributed

tissue in our body.

145. Gap junctions are present in smooth muscles and

cardiac muscles.

146. Elastic cartilage is present at the tip of nose.

147. Iodothyronines are lipid soluble hormones, do not

generate second messenger.

148. Fact.

149. Lecithin is phosphatidyl choline.

150. An ester bond is formed between phosphate and a

pentose sugar.

151. Lipids are strictly not biomacromolecules as they

have a molecular weight less than 800 daltons but

are obtained in acid insoluble fraction.

152. Antibiotics are the secondary metabolites produced

by bacteria and fungi.

Carotenoids, anthocyanins are not used in

photosynthesis, therefore, they are secondary

metabolites.

Gums are also secondary metabolites.

153. In B-DNA, the pitch of a helical turn is 3.4 nm or

34 Å.

154. ACTH stimulates the adrenal cortex to release

cortisol. Rise in cortisol will exert negative feedback

for the release of ACTH.

155. Gonadotropin releasing hormone is secreted by

hypothalamus.

156. Zinc ions (Zn2+) act as co-factor for carbonic

anhydrase and carboxypeptidase.

157. In the presence of non-competitive inhibitor, Km

remains constant but the final velocity (Vmax

)

decreases.

158. Fats enter lymphatic system.

159. Succus entericus or intestinal juice contains

disaccharidases like sucrase, maltase; lactase. It

also contains nucleotidases, nucleosidases and

aminopeptidases.

160. Thirst centre is in hypothalamus.

162. Total volume of air inside the lungs after deepest

inspiration is called total lung capacity.

TLC = TV + IRV + ERV + RV

= IC + FRC

IC is TV + IRV and FRC is ERV + RV

= VC + RV

VC = TV + IRV + ERV


8/8

165. About 70% ventricular filling occurs due to cardiac

relaxation known as joint diastole, this means before

atrial contraction.

166. Heart failure means the state of heart when it is not

pumping blood effectively enough to meet the needs

of the body.

Coronary artery disease is often referred to as

atherosclerosis.

167. Part of parasympathetic nervous system i.e. vagus

nerve endings innervate SA node releasing

acetylcholine. Acetylcholine is excitatory in all body

parts except heart where it reduces our heartbeat.

168. Protonephridia or flame cells that help in excretion

are found in Planaria, rotifers and cephalochordates

like Amphioxus.

169. A fall in GFR stimulates secretion of renin by Juxta-

glomerular cells of the kidney. Renin works to

increase blood pressure and blood volume to

glomerulus, also increases GFR.

170. Selective secretion occurs only by active process.

171. Shortening of sarcomeres causes Z-lines to come

closer.

175. Hydroxyapatite salts comprises largely of calcium

hydroxy phosphate.

176. Sympathetic nervous system and adrenal medulla

both are stimulated under the same emergency

conditions of flight, fright and fight and release

adrenaline and nor-adrenaline.

179. Rods and cones during darkness are depolarized

and are hyperpolarised during light.

180. Stapes communicates the internal ear through

fenestra ovalis.

� � �

Test - 8 (Code D) (Answers) All India Aakash Test Series for Medical-2019

1/8

1. (2)

2. (2)

3. (4)

4. (2)

5. (2)

6. (1)

7. (4)

8. (1)

9. (3)

10. (1)

11. (4)

12. (3)

13. (4)

14. (2)

15. (3)

16. (1)

17. (2)

18. (2)

19. (4)

20. (3)

21. (2)

22. (4)

23. (2)

24. (3)

25. (1)

26. (3)

27. (1)

28. (2)

29. (1)

30. (4)

31. (3)

32. (1)

33. (2)

34. (1)

35. (4)

36. (4)

Test Date : 01/04/2018

ANSWERS

TEST - 8 (Code D)

All India Aakash Test Series for Medical - 2019

37. (2)

38. (1)

39. (4)

40. (4)

41. (4)

42. (4)

43. (1)

44. (4)

45. (2)

46. (3)

47. (2)

48. (1)

49. (2)

50. (2)

51. (4)

52. (1)

53. (2)

54. (4)

55. (3)

56. (2)

57. (2)

58. (1)

59. (2)

60. (4)

61. (2)

62. (2)

63. (2)

64. (3)

65. (2)

66. (1)

67. (3)

68. (4)

69. (1)

70. (4)

71. (3)

72. (1)

73. (1)

74. (1)

75. (4)

76. (3)

77. (2)

78. (3)

79. (3)

80. (1)

81. (4)

82. (4)

83. (4)

84. (3)

85. (2)

86. (3)

87. (1)

88. (2)

89. (3)

90. (4)

91. (2)

92. (1)

93. (1)

94. (3)

95. (2)

96. (1)

97. (4)

98. (3)

99. (3)

100. (1)

101. (2)

102. (4)

103. (2)

104. (3)

105. (2)

106. (4)

107. (3)

108. (1)

109. (3)

110. (3)

111. (3)

112. (1)

113. (3)

114. (2)

115. (3)

116. (3)

117. (3)

118. (1)

119. (4)

120. (4)

121. (2)

122. (1)

123. (3)

124. (3)

125. (4)

126. (2)

127. (3)

128. (2)

129. (1)

130. (4)

131. (4)

132. (4)

133. (4)

134. (3)

135. (4)

136. (3)

137. (4)

138. (2)

139. (3)

140. (3)

141. (2)

142. (2)

143. (2)

144. (2)

145. (3)

146. (3)

147. (4)

148. (3)

149. (4)

150. (3)

151. (2)

152. (2)

153. (3)

154. (3)

155. (4)

156. (4)

157. (2)

158. (2)

159. (4)

160. (1)

161. (3)

162. (3)

163. (1)

164. (3)

165. (2)

166. (2)

167. (1)

168. (3)

169. (2)

170. (2)

171. (3)

172. (2)

173. (2)

174. (1)

175. (3)

176. (2)

177. (3)

178. (3)

179. (2)

180. (1)

All India Aakash Test Series for Medical-2019 Test - 8 (Code D) (Hints)

2/8

HINTS

PHYSICS

1.21

(.8) 22

U k

2m

Tk

4.

2

2 2

2

sin 2

51

mg kf

R R

k

2

2

sin

1

mga

k

R

5. 2I

Tmgr

6. Using conservation of momentum

m1

u1

m2

u2

m1 = m

2 = 1kg

u1 = 5 m/s, u

2 = 5 m/s

Initial momentum

Pi = (5 × 1) – (5 × 1) 0

Final momentum

Pf = (m

1 + m

2)v = 0

2v = 0

v = 0

7. y = .02sin(x + 30t)

v = 30 m/s

= 1.3 × 10–4

kg/m

Tv

8. aaa

sinY a t kx

sin2

Y a t kx⎛ ⎞ ⎜ ⎟⎝ ⎠

sinY a t kx

10.60 40 60 40

107 2

k ⎛ ⎞ ⎜ ⎟⎝ ⎠

40 4010

7 2

T Tk

⎛ ⎞ ⎜ ⎟⎝ ⎠

11.v

F AY

⎛ ⎞ ⎜ ⎟⎝ ⎠

12. A1V

1 = A

2V

2

13.4P

V r⎛ ⎞ ⎜ ⎟⎝ ⎠l

14. app actual1

2

dww w

ds

⎛ ⎞ ⎜ ⎟⎝ ⎠

16. 80 m < 16(50)

17.1

v

RC C

n

50

2v

C C R

18.C

v uf f

v u

v = 330 m/s

480Hzf

f = 44 Hz

19. For open = ( 1)

2

n vl

For close = (2 1)

4

n vl

Test - 8 (Code D) (Hints) All India Aakash Test Series for Medical-2019

3/8

20. 2, 3 10dx dy

tdt dt

2 2(2) (3) , 0v t

21. 4(1 2 )d

tdt

= I = I4(1 – 2t)

Slope < 0, y intercept > 0

22. Stopping distance =

2

2

v

a

24.45 8 32

105 8 212 32

F

26. I1

1 = I

2

2

2 2

2 2 1 1

1 1

2 2x I I

27. r f �

��

ˆ ˆ0 (2 2 )r i j �

ˆ3f k �

28.21

22

e

GMmmv

a

⎛ ⎞ ⎜ ⎟⎝ ⎠

30.2S

Hgl

S = .075 N/m

= 103 kg/m3

l = 10–3 m

32. rms

Tv

M

34.

2 2

21 11

2 3

⎛ ⎞ ⎛ ⎞ ⎜ ⎟ ⎜ ⎟⎝ ⎠ ⎝ ⎠

36. k = wtotal

210 (1)(20) (18)

2R

g

37. outermost

= innermost

0

6

V V

L L

39. h = e4H

40. m1 T

m2g = 4T

T m1g

41.10sin45

R

42. Vrg

sin30° = 5

30° Vrg

Vrm

V mg

= 5 km/hr

43.2 1

11 2 1

T⎛ ⎞ ⎜ ⎟

⎝ ⎠

44.M

dV

d% = M% + V%

.01 .1100

25 5

⎛ ⎞ ⎜ ⎟⎝ ⎠

45. l maLbc

CHEMISTRY

46. Molar entropy is intensive, while entropy is extensive.

47. In compression entropy decreases.

48. Due to greater hydration enthalpy of F–.

49. 2 2 2 2 2

5C H O 2CO H O

2

or

H C C H + (O O)52

2[O C O] + H O H

HC =

reactant productB E B E ∑ ∑

= (C C) (C H) (O O)

5BE 2BE BE

2

⎡ ⎤ ⎢ ⎥⎣ ⎦

(C O) (O H)[4 B E 2 B E ]

= 5

800 2 410 500 (4 700 2 430)2

⎛ ⎞ ⎜ ⎟⎝ ⎠

= –790 kJ/mol

Calorific value = C

H 79030.38 kJ/gm

Molar mass 26


4/8

50. Fact.

51. 2z

d does not have nodal planes.

52. Ti(22) = 1s2 2s

2 2p6 3s

2 3p6 4s

2 3d2

Ti2+ = 1s2 2s

2 2p6 3s

2 3p6 4s

0 3d2

Number of e– in s-orbital = 2 + 2 + 2 = 6

d-orbitals = 2

Ratio = 2 1

6 3

53.

2

2

Li

2

He

IE 3

IE 2

2 He

122.4 9

(IE ) 4

(IE2)He

= 54.4 eV/atom

54.2 2

2

O O He He

mix

O He

n M n M

M

n n

1 32 1 418

1 1

2OM = 32

2

2

O mix

mix O mix

r M x 18

r M r 32 ⇒

mix

mix

x 9 4xr

r 16 3 ⇒

55. Area under curve represents number of molecules

so, on increasing temperature number of molecules

cannot change, so area remains constant.

56. Due to high lattice energy.

58. It is highly soluble in hot water.

59. CO2, N

2O

5 Acidic

In2O

3 basic

60. O S Te

3.5 2.5 2.01

61.

F

Xe

F

= 0

F

P

F

= 0

Cl

Cl

Cl

Cl

C

Cl

= 0

ClCl

62.4 2 2 2

3

CH 2O CO 2H O

%s 25% %s 50%

character character

sp sp

Change = 50 – 25 = 25

% change = 25

100 100%25

63. Species Bond order

N2

3

2N

2.5

2N

2.5

O2

2

2O

2.5

2O

1.5

H2

1

2H

0.5

2H

0.5

If bond order is same then species having less e– in

ABMO are more stable.

64. Na NH H P O4 4

+1 +1 +1 –2×4x

3(+1) + x + 4(–2) = 0

x = +5

65. 2

2 2 2Hg I (s) Hg (aq.) 2I (aq.)

s 2s

��⇀↽��

22

sp 2K Hg I

⎡ ⎤ ⎣ ⎦ = (s)(2s)2 = 4s3

66. Initially

3CH COOH

2000 1n 1

1000 2

3CH COONa

1000n 1 1

1000

1

[Salt]pH pKa log

[Acid]

14.76 log 4.76.

1

Moles of NaOH added = 1000 1

0.51000 2


5/8

So, reaction is

3 3 2CH COOH NaOH CH COONa H O

t 0, mole 1 0.5 1 0

final, mole 1 0.5 0.5 0.5 1 0.5

0.5 0 1.5

2

1.5pH 4.76 log

0.5

= 4.76 + log3

pH2 = pH

1 + 0.4771

pH = pH2 – pH

1 = 0.4771

% change = 0.477

100 10%4.76

�

67.0.5

2 22HI H I

initial mole 1 0 0

1 1 1final mole 1

2 4 4

��⇀↽��

eq 2

1 1

14 4K

41

2

⎛ ⎞⎜ ⎟⎝ ⎠

68.2

1

eq

eq 1 2

K H 1 1log

K 2.303R T T

⎡ ⎤ ⎢ ⎥⎣ ⎦

3

15 H 1 1log

20 2.303 2 10 300 350

⎡ ⎤ ⎢ ⎥ ⎣ ⎦

H 500.12

2.303 0.002 300 350

H = –1.2 kcal

71.

CH3

CH(CH )3 2

NO2

+

CH3

CH(CH )3 2

NO2

(A)

CH3

CH(CH )3 2

Cl+

CH3

CH(CH )3 2

Cl

(B)

–CH3 is more ring activating than –CH(CH

3)2.

72. CH CH

Ni(CN)2

6 e , Aromatic,Diamagnetic –

8 e , non-planar,tub-shaped.Non-aromatic

–

Fe

74.CH C CH

3

NaCH C C Na

3

– + CH Br3 CH C C CH

3 3

(A) (B)

CH CH C CH3 2

(C)

C H

But–1–Yne.4 6

CH CH C CH3 2 3

O

NaNH2

H O

H , Hg

2

+ 2+

C H

But–2–Yne4 6

CH C C C3

H3

(B)

75.CH OH

2

H+

CH2 CH

2

HCl

2

500°C

Cl

–H

–H O2

(via free radical allylic substitution)

76. 1°, 2° & 3° amines are functional isomers of each

other.

78. (A)

C – CH3

O

(B)

CH – CH2 3

(C)

COOH

79. 2ExcessNaCNS 2Na NaCN Na S

So, NaCNS will not be formed. Kjeldhal method can

be used for aniline and Carius method is not good

for I, as AgI may be slightly soluble in HNO3 and

some I2 may be present rather than AgI.


6/8

80.

NH3

M2

.40 ml H SO2 4

N1

V1

add H O2

N , (V) = 500 ml,2

N , 50 ml 40 ml,2

M20

NaOHV

2V

3N

3

O.C.

0.7 g

Normality of 500 mL solution

N2V

2 = N

3V

3

N2 × 50 =

11 40

20

⎛ ⎞ ⎜ ⎟⎝ ⎠

N2 =

1

25

m eq. of NH3 = N

1V

1 – N

2V

= 1 1

2 40 5002 25

⎛ ⎞ ⎜ ⎟⎝ ⎠

= 40 – 20 = 20

%N = 3

1.4 meq. of NH

w

=

1.4 2040%

0.7

83.

6 e

Aromatic

–

N

H6 e

Aromatic

–

sp3

– carbon

Non-planar(Non-aromatic)

B

H4 e

Antiaromatic

–

N

, , ,

6 eAromatic

–

4 eAntiaromatic

–

HH

10 e ,non-planar, non-aromatic

–

2 eAromatic

–

, , ,

2 e

Aromatic

–

84. Twist boat is more stable than boat form, as boat

has eclipsed form, while twist boat has partially

eclipsed structure and reduces flagpole interaction.

85. Bridgehead carbocation is less stable.

86. After electrophilic attack in pyrrole intermediate

cation (-complex) has complete octet in one of the

resonating structure thus it is more reactive. While

in pyridine due to greater electronegativity of N-atom,

stability of intermediate cation decreases.

So, electrophilic reactivity order is:

Pyrrole > Benzene > Pyridine

N

H

E

N

H

E

N

HComplete octet

E

87. Number of revolutions per second

2

3

Z

n

2

2 2

2 3 2 3

He He Li

3 2 3 2

Li He Li

n Z n 2 2 32

n n Z 3 3 243

88.3 3 3 4

2 2 4 3 2Fe (C O ) F e CO

6C+3 6C+4 + 6e

n-factor = 6 × 1 = 6

89. Al2(SO

4)3 xH

2O

Al% = 8.1 = 54

100342 18x

x = 18

For two Al atom, number of H2O molecule = 18

so, for one Al atom, number of H2O molecule = 9

90. Empirical formula = C5H

8O

4 NNa

Molecular wt = 84.5 × 2 = 169

Empirical formula wt = 5 × 12 + 8 × 1 + 16 × 4 +

14 × 1 + 23 × 1 = 169

169n 1

169

Molecular formula = C5H

8O

4 NNa

Atomicity = 5 + 8 + 4 + 1 + 1 = 19

BIOLOGY

91. Heart wood provides mechanical strength

92. Rice : Oryza sativa (monocot)

Mango : Mangifera indica (dicot)

94. Archaeae, Bacteria domains

95. In grass stem

97. Selaginella - b, c, e

Pinus - b, c, d, e

98. Polar transport

99. Aggregate fruit


7/8

100. Scrapie in sheep, Kuru and CFJ in man

101. Metabolic reactions are also possible at outside the

cells.

102. Underground stems

104. Stroma

105. (b) Many ovules

(c) Berry or capsule

106. Glycolipid & glycoprotein at outer surface

107. Monocot stem and leaf

108. Fimbriae – Small bristle-like structures

109. Nepenthes is a pitcher plant not venus flytrap.

111. Rhizobium, contributes haeme part of LHb.

112. Synthetic phase

114. Haplontic life cycle

115. • Axoneme is the part of cilia & flagella.

• Hub is the central part of centrioles.

116. Tobacco – Polyandrous

Tulip – Epitepalous/Epiphyllous

Maize – Polyandrous

117. Sporophyte – free living

Gametophytes – parasites on sporophyte

118. To restore high nucleocytoplasmic ratio

119. Movement of H2O from high to low .

120. (1) Synergistic (2) Antagonistic

121. Red algae

122. Boron

123. n = 20

Secondary protonema (n) = 20

Oosphere (n) = 20

Leaf cell (n) = 20

Spore mother cell (2n) = 40

124. High O2, high temperature, high light intensity

125. Ascomycetes, Basidiomycetes

126. Cyclic photophosphorylation

127. Anaphase-I

128. Passive water absorption

129. Maltose = glucose + glucose

= 36 + 36 = 72 ATP

130. Hormones, pH, ions

External factors m shock, humid environments,

temperature.

131. Slime moulds - true wall in spores

132. • Phosphopyruvic dikinase in mesophyll cells

• BSCs have maximum chloroplasts.

133. Circular DNA

134. Parenchyma

135. (P) Inner mitochondrial membrane

(Q) Matrix

(R) F0 = Intrinsic protein

(S) F1 = Extrinsic protein, catalytic centre

136. Stapes communicates the internal ear through

fenestra ovalis.

137. Rods and cones during darkness are depolarized and

are hyperpolarised during light.

140. Sympathetic nervous system and adrenal medulla

both are stimulated under the same emergency

conditions of flight, fright and fight and release

adrenaline and nor-adrenaline.

141. Hydroxyapatite salts comprises largely of calcium

hydroxy phosphate.

145. Shortening of sarcomeres causes Z-lines to come

closer.

146. Selective secretion occurs only by active process.

147. A fall in GFR stimulates secretion of renin by Juxta-

glomerular cells of the kidney. Renin works to

increase blood pressure and blood volume to

glomerulus, also increases GFR.

148. Protonephridia or flame cells that help in excretion

are found in Planaria, rotifers and cephalochordates

like Amphioxus.

149. Part of parasympathetic nervous system i.e. vagus

nerve endings innervate SA node releasing

acetylcholine. Acetylcholine is excitatory in all body

parts except heart where it reduces our heartbeat.

150. Heart failure means the state of heart when it is not

pumping blood effectively enough to meet the needs

of the body.

Coronary artery disease is often referred to as

atherosclerosis.

151. About 70% ventricular filling occurs due to cardiac

relaxation known as joint diastole, this means before

atrial contraction.

154. Total volume of air inside the lungs after deepest

inspiration is called total lung capacity.

TLC = TV + IRV + ERV + RV

= IC + FRC

IC is TV + IRV and FRC is ERV + RV

= VC + RV

VC = TV + IRV + ERV


8/8

� � �

156. Thirst centre is in hypothalamus.

157. Succus entericus or intestinal juice contains

disaccharidases like sucrase, maltase; lactase. It

also contains nucleotidases, nucleosidases and

aminopeptidases.

158. Fats enter lymphatic system.

159. In the presence of non-competitive inhibitor, Km

remains constant but the final velocity (Vmax

)

decreases.

160. Zinc ions (Zn2+) act as co-factor for carbonic

anhydrase and carboxypeptidase.

161. Gonadotropin releasing hormone is secreted by

hypothalamus.

162. ACTH stimulates the adrenal cortex to release

cortisol. Rise in cortisol will exert negative feedback

for the release of ACTH.

163. In B-DNA, the pitch of a helical turn is 3.4 nm or

34 Å.

164. Antibiotics are the secondary metabolites produced

by bacteria and fungi.

Carotenoids, anthocyanins are not used in

photosynthesis, therefore, they are secondary

metabolites.

Gums are also secondary metabolites.

165. Lipids are strictly not biomacromolecules as they

have a molecular weight less than 800 daltons but

are obtained in acid insoluble fraction.

166. An ester bond is formed between phosphate and a

pentose sugar.

167. Lecithin is phosphatidyl choline.

168. Fact.

169. Iodothyronines are lipid soluble hormones, do not

generate second messenger.

170. Elastic cartilage is present at the tip of nose.

171. Gap junctions are present in smooth muscles and

cardiac muscles.

172. Connective tissue is the most widely distributed

tissue in our body.

173. Wuchereria is unsegmented. Both animals have tube

within tube plan, are parasites and are protostomes.

174. In cyclostomes, closed circulatory system is found.

175. Arthropods have open circulatory system.

176. Tetrapods include amphibians, reptiles, aves and

mammals.

Pisces is the 1st group with jaws in vertebrates

(Gnathostomes)

177. Some mammals are oviparous like Ornithorhynchus,

hence lack placenta.

178. In chondrichthyes fertilisation is internal and they are

usually ovoviviparous.

179. In coelenterates, skeletal system is absent except

anthozoans or corals which have a calcium

carbonate skeleton known as corallite.

180. Reptiles are cold-blooded animals. Water tight shell

is present in both birds & reptiles.

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