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Test - 5 (Code-E) (Answers) All India Aakash Test Series for Medical-2018

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Test Date : 04/02/2018

ANSWERS

TEST - 5 (Code E)

All India Aakash Test Series for Medical - 2018

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All India Aakash Test Series for Medical-2018 Test - 5 (Code-E) (Hints)

2/7

PHYSICS

1.

R

+

+

+

+

+

+ +

+

+

+

+

+

O

V =Vsphere at centre

– Vcavity

=

2 2

0 0

3

6 12

R R

=

2

0

5

12

R

2.qE

mg sin

qE = mg sin

9 6 2

2

9 10 (4 10 )

d

=

600 310

1000 5 d = 0.2 m

3. E = 0 so force is zero inside. Net charge is positive

on sphere therefore it will repel q towards right.

–q

Q

q

4. |E1| = |E

2| = |E

3| = E

Enet

= 2E = 3

2⎛ ⎞⎜ ⎟⎝ ⎠

Kp

R

3 2

1

120° E2

E1

E3

6. –g

VR G

I

7. V = iR

30 = 5R

R = 6 (ideally)

R =V

i(∵ i in R dec)

But R > 6 (non ideally)

10. qV =

21

2

p

m

13.2 2

( )kQ q

R x

=

2( ) 1

2

kQ qmv

R

14. i1 + i

2 + i

3 = 0

70 0 10

10 20 30

D D DV V V

= 0

VD = 40

iAD

=30

310

iBD

=40

220

iCD

=30

130

70 V

0 V

10 V

20

30

D

10

B

C

A

i1

i3

i2

15.10 3 V

6 3

4.5 V

i1

i – i1

i

2

1

Applying KVL in Loop 1,

–10i1 – 3 + 6(i – i

1) = 0

–16i1 – 3 + 6i

1 = 0 ... (i)


–3i – 6(i – i1) + 4.5 = 0 ... (ii)

On solving (i) & (ii), i1 = 0

HINTS

Test - 5 (Code-E) (Hints) All India Aakash Test Series for Medical-2018

3/7

17.

300 V

100

200

100 V 600

i1

i2

Req

= 500

i =100 1

A500 5

i2 =

1 600 6A

5 900 45

V =6

30045

= 40 V

19. qV = U

20. F = qE

2

31 3cos kp

F qr

21. dV Edx

2

3

0

40 ∫ ∫A

O

V

V

dV x dx

VA – V

O = –160 V

23. Distance is measured along electric field line.

24. = 1

24

Q

R =

2

24 (2 )

Q

RQ

1 + Q

2 = 20R2

Now, 1

22

Q R

Q R Q

1 =

220

3R

and Q2 =

240

3R

1 =

1

24

Q

R

and 2 =

2

24 (2 )

Q

R

30. P =

2V

R, R

1 > R

4 > R

2 > R

3

P 1

R, P

1 < P

4 < P

2 < P

3

31. Q = 1000 × 4.2 × 15

Q = 63000 J in 1 minute

P = 60 sec

Q = 1050 W

33. Circuit reduces by using Wheatstone Bridge.

35. i = 18

3.2 RR = 4

37. �AB

V

L

� = 40 cm, L = 100 cm

123 6 V

1 2 3

⎛ ⎞ ⎜ ⎟ ⎝ ⎠AB AB

V iR

38. i = E

r nr

E – i(r) = Terminal voltage

E – ( )E

rr nr

1

⎛ ⎞⎜ ⎟⎝ ⎠

nE

n =Terminal voltage

40. Cu

is +ve

Ge

is –ve

43. Using Gauss law.

CHEMISTRY

47. Nearest neighbour number is 6 in a layer.

48. At normal boiling point vapour pressure of water

= 1 atm = 760 torr

s

3

s

760 P (2 1)So For AgNO , i 2

760 (2 1) 55.5

P 733.56 torr

49. Vapour pressure v/s temp graph is not linear.

50. Freundlich isotherm, x 1

log logK logPm n

Given, log K = 0.3010 K = 2

Slope = tan45° = 1 = 1

n n = 1

x2P 2 0.2 0.4

m

51. Due to very high aqueous radius of Li+ in solution, its

mobility is lowest.

While H+ has exceptionally very high ionic mobility.

It can jump from one to another water molecule

easily.


4/7

52.0

m 2 4 2 4 3 2(K SO Al (SO ) 24H O)

0 0 3 0 2

m m m 42 (K ) 2 (Al ) 4 (SO )

= 2x + 2y + 4z S cm2 mol–1

53. KI(aq) + I2(s) KI

3(aq)

Number of solute particles remains same, so there

is no change in magnitude of colligative property i.e.

freezing point of solution remains same.

54. Limiting value of radius ratio is 0.414 but actually it

is higher.

So distance should be greater than 2 × 250 pm

OR

r0.525

250

r+ = 131.25 pm

Distance between two nearest Cl– ions = a

2

2r 2r

2

2(131.25) 2(250)

539.08 pm2

So distance is 539.168 pm

55. It is due to absorption of water.

57.(I )

(I )

4r 2a

a 624r 220.65 pm

2 2 2 2

58. 1v

1 +

2v

2 =

R(v

1 + v

2) for mixing

so R =

6.5

3 = 2.16 atm

59. HCl and H2O mixture shows negative deviation.

They form maximum boiling azeotropic mixture.

Boiling point should be greater than 100°C.

60.

EaRT

a

K .

E40,000 /

RT

Ae

T

Ea = 40000 × 2 = 8.0 × 104 Cal

61. 10 10

2.303 100 2.303 100k log log

70 20 t 10

⎛ ⎞ ⎛ ⎞ ⎜ ⎟ ⎜ ⎟⎝ ⎠ ⎝ ⎠

t = 100 minutes

62. Number of equivalent of FeSO4 =

W It

E F = NV

N.V = 0.036

∵ M = 0.2 so N = 0.4

0.036V 0.09 L

0.4

64. 2AB22AB(g) + B

2(g)

Initial pressure 100 mm 0 0

Pressure at 5 min 100 – x x

x

2

x(100 x) x 110

2 x = 20 mm

Rate of reaction = 2AB

(P )1 1 20

2 t 2 5

= 2 mm min–1

65. KCl is strong electrolyte, so its graph is

m

c

66.

2o

cell cell 2

0.059 [Zn ]E E log

2 [Cu ]

y = c + m x

so intercept (c) = o

cellE 1.1 V

cell

cell

0.059 0.1E 1.1 log

2 0.01

E 1.07 V

68. Protecting power 1

Gold number

69.

n 1

1/2 1 2

1/2 2 1

(t ) a

(t ) a

⎛ ⎞

⎜ ⎟⎝ ⎠

n 12

3

120 3.2 10

60 8 10

⎛ ⎞ ⎜ ⎟⎜ ⎟⎝ ⎠

2 = (4)n–1

2 = (2)2n–2

2n – 2 = 1

n = 3

2

Unit of K = mol1–n Ln–1 s–1 = mol–1/2 L1/2 s–1

71. ∵ 35.5 g Cl– ions lose = 1 mol e– = NA

so 0.355 g Cl– ions lose = 0.01 mol e– = 0.01 NA

72. Ni is ferromagnetic solid.

74. Number of sphere : Number of TV (HCP lattice)

1 : 2

According to given data it is, 1 : 2 2

3

= 3 : 4

so simplest formula is A3B

4

But it is ionic compound so formula is B4A

3.


5/7

76.i N

icn-factor

NaCl : 2 0.1

0.21

MgCl2: 3 0.3

0.452

4 6

5 0.2K [Fe(CN) ] : 0.25

4

3

4 0.4AlCl : 0.53

3

78. Tf = iK

f m

0.2046 = (1 +) 1.86 × 0.1 = 0.1

[OH–] = C = 0.1 × 0.1 = 10–2 M

pOH = –log 10–2 = 2

pH = 14 – 2 = 12

79.3 2 1

m

1.6510 S cm mol

0.15

= 11 × 103 S cm2 mol–1

= 11 × 103 × 10–4 S m2 mol–1

= 1.1 S m2 mol–1

80. Au has higher value of (E°red

) reduction potential

81. H2O + M H

2 + M(OH)

x

So it can’t form O2 gas

83. KI (excess) + AgNO3 AgI/I– (negative sol)

Al3+ has highest +ve charge, so it is most powerful

coagulating agent.

84. ∵ Process is 2H+ + 2e– H2

0.02 M 4.0 atm

H2

2H |H2

2

p0.0591E log

2 [H ]

0.0591 4log

2 (0.02)

0.118 V

86. Rate = k[O

3] [O]

∵ [O] = Keq

[O3] [O

2]–1

Rate = kKeq

[O3]2 [O

2]–1

Overall order is = 2 – 1 = 1

87. H = (Ea)f – (E

a)b

–20 = 60 – (Ea)b

(Ea)b = 80 kJ/mol

88. Greater the size of ion, lesser the solvation and

higher conductance.

89. Since (x) with time increasing uniformly so change

in concentration of [A] or [B] with time i.e. d[A]

dt is

constant.

90. Since both have fcc type arrangement so Zeff

= 4

per unit cell

∵ Packing efficiency also same

3

KCl

3

NaCl

1/3

KCl

NaCl

a Volume of unit cell of KCl xso

Volume of unit cell of NaCl ya

a

a

⎛ ⎞ ⎜ ⎟⎝ ⎠

x

y

BIOLOGY

91. Geiotonogamy can occur on monoecious plant.

93. Epiblast is present in embryo of monocot seeds.

95. Filiform apparatus is present in synergids.

96. Hydrophily is seen in 30 genera, mostly

monocotyledons.

97. Ploidy of PEN = Full ploidy of female plant + 1

2ploidy

of male plant = 2n + 1/2(4n) = 4n

Ploidy of zygote = 1

2 ploidy of female plant +

1

2

ploidy of male plant

= 1/2(2n) + 1/2(4n)

= n + 2n

= 3n

98. Also called non-endospermic seeds.

100. Cells of endothecium are persistent.

102. IA, IB, i

103. Phenotype of dihybrid cross in F2 generation.

= Round yellow : Round green : Wrinkled yellow :

Wrinkled green

= 9 : 3 : 3 : 1

Hence, ratio of round green and wrinkled yellow

= 3 : 3

= 1 : 1

105. Type of gametes = 2n.

Here, n is heterozygous genes = 22 = 4


6/7

106. Algae are both isogametes and heterogametes but

pollens are not produced.

107. Options (2), (3) and (4) monocarpic plants while in

option.

(1) Peepal and mango are polycarpic plants.

108. Embryogenesis is a post fertilisation event.

110. In Apple 2n = 34.

112. Incomplete dominance.

113. The phenotype of test cross progeny is due to the

gametes of RrYyTt, as gametes of rryytt are

recessive, non expressing.

114. Father Mother

Ff

× Ff

Free ear lobes(3/4)

FF Ff Ff��

Free ear lobes(1/4)

ff

��

A. Free ear lobed boy = 3 1 3

4 2 8

B. Fused ear lobed girl = 1 1 1

4 2 8

115. Green seed colour is recessive trait.

116. Brachydactyly is a autosomal dominant trait.

117. Dominant epistasis : 12 : 3 : 1.

118. It is trisomy of 21st chromosome (2n + 1) = 47.

119. Overall masculine development occur in Klinefelter’s

syndrome.

121.

123. In Morgan dihybrid cross parental type progeny are

62.8%. Hence Genotype of w+ m+ = 62.8

4 = 15.7%

124. Genotype = AA + ZZ, male birds.

Gametes are (A + Z)

125. Haemophilia is X-linked recessive disorder

126. It is an autosomal recessive disease.

127. 6x = 2n = 42

n = 21

x = 7

M = 2n–1 = 41

128. Terror of Bengal-water hyacinth (Eichhornia).

131. Exine is outer wall of pollen grain.

134. No. of genotypes = (3)n,

Here n is no. of heterozygous genes

= 34

= 81

No. of phenotypes = (2)n


= (2)4

= 16

135. It shows both linkage and Choromosomal map but

X-body was discovered in Firefly.

136. Life span is the period from birth to natural death of

an organism. Maximum life span is characteristic of

species while life expectancy is characteristic of

population.

137. Spermatogenesis essentially requires temperature

(2-2.5 °C) lower than 37°C.

138. Butterfly 1-2 weeks, Crocodile 60 years, Crow

15 years, Tortoise 100-150 years

139. Sexual reproduction is an elaborate, complex and

slow process

140. Simple binary fission – Amoeba

Longitudinal binary fission – Euglena ,Vorticella

Oblique binary fission – Ceratium, Gonyaulax

Transverse binary fission – Paramecium, Planaria.

141. Colostrum is poor in iron content and contains

2.9 g/dl of fats. Calories are obtained both from fat

and lactose. Mammary glands are modified sweat

glands. Ejection of milk is stimulated by oxytocin.

142. Spermatogenia has 46 chromosomes. Meiosis I in

primary spermatocyte results in formation of

secondary spermatocyte (22+X or 22+Y).

Primary oocyte will be diploid with (44+XX)

chromosomes.

143. Fact

144. MTP is never performed to control population growth.

MTP is usually safe upto 12 weeks.

145. Venereal diseases are those diseases or infections

that are spread through sexual intercourse.

Measles, diptheria, dengue and yellow fever do not

fall in this category.


7/7

� � �

146. P. LH which is essential for maintenance of corpus

luteum.

Q. Estrogen is secreted by follicular cells and it

helps to repair the lost endometrium in

proliferative phase.

R. Progesterone that is essential for maintenance

of endometrium.

147. Menstrual flow results due to breakdown of

endometrial lining

148. Lactational amenorrhoea is effective upto 6 months

(maximum) after delivery of the foetus.

149. Arrhenotoky – Honey bees, wasp and turkey.

Thelytoky – Lacerta saxicola armeniaca.

Amphitoky – Aphid

150. Fact

151. Parathyroid gland is endodermal in origin while other

options are ectodermal.

153. Clones are morphologically and genetically similar

individuals

154. Isthmus part of fallopian tube is closer to uterus.

155. At puberty only 60,000 – 80,000 primary follicles are

left in each ovary due to atresia.

156. Nirodh is another name for condom.

Femidom is female condom which is not a

hormonal contraceptive.

157. Secondary oocyte is formed in tertiary follicle.

158. Secretions of Cowper’s gland neutralise acidity.

Seminal vesicles are paired, tubular, coiled glands,

secrete viscous fluid which constitute main part of

ejaculate. Seminal fluid contains fructose, citric acid

and fibrinogen. Prostate gland is unpaired.

159. Functional sperms should have proper shape, size

and motility.

160. Hepatitis B and HIV can be spread by sexual

contact, blood transfusion with infected person.

161. Oogonia are arrested at prophase I (diplotene stage)

of meiotic division.

162. Secondary follicles have a layers of granulosa cell

with new theca surrounding primary oocytes.

Follicular cells secrete estrogen.

163. Trichomonas vaginalis, a flagellated protozoa causes

trichomoniasis.

164. Gonorrhoea – Neisseria gonorrhoeae

Syphilis – Treponema pallidum

Chlamydia – Chlamydia trachomatis

Genital herpes – Herpes simplex virus

Chancroid – Haemophilus ducrei

165. Cyclofem, Depot medroxy provera are hormonal

injectables. Implanon and norplant are implants.

Mala-D is a pill. Sponge is a chemical spermicide.

166. Terminal methods block only gamete transport.

Hormone functions and gametogenesis are

unaffected.

167. IUDs are widely accepted methods of contraception.

That are inserted by an experienced, expert nurse

or doctor.

168. POP is an example of mini pill with no estrogen

169. Both ovulation and menstrual cycles are unaffected.

170. GIFT is in-vivo technique.

171. Meiotic division of secondary oocyte is completed

when sperm enters into the cytoplasm of ovum.

172. Embryo with 8 to 16 cells is called morula.

173. Umblical cord contains only foetal blood.

Embryo is susceptible to teratogens maximally

during first trimester of pregnancy.

174. After 12 weeks of fertilisation, most of the major

organ systems are formed.

175. AMF is secreted by sertoli cells / sustentacular cell

176. Amniocentesis is not a contraceptive technique

ultrasound is used for determination of club foot cleft

palate etc.

177. Signals for parturition originate from fully developed

foetus and placenta.

178. Lanugo appears at third trimester and is shed before

birth

179. Fact

Test - 5 (Code-F) (Answers) All India Aakash Test Series for Medical-2018

1/7

1. (3)

2. (2)

3. (4)

4. (2)

5. (3)

6. (4)

7. (1)

8. (3)

9. (2)

10. (3)

11. (3)

12. (3)

13. (4)

14. (3)

15. (2)

16. (1)

17. (4)

18. (2)

19. (3)

20. (1)

21. (2)

22. (1)

23. (1)

24. (2)

25. (1)

26. (2)

27. (3)

28. (2)

29. (3)

30. (2)

31. (1)

32. (1)

33. (2)

34. (3)

35. (3)

36. (3)

Test Date : 04/02/2018

ANSWERS

TEST - 5 (Code F)

All India Aakash Test Series for Medical - 2018

37. (4)

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97. (3)

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99. (3)

100. (2)

101. (4)

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103. (1)

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106. (2)

107. (4)

108. (2)

109. (2)

110. (3)

111. (3)

112. (3)

113. (4)

114. (3)

115. (2)

116. (1)

117. (2)

118. (2)

119. (1)

120. (3)

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122. (1)

123. (2)

124. (4)

125. (2)

126. (1)

127. (3)

128. (1)

129. (1)

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133. (3)

134. (2)

135. (1)

136. (4)

137. (1)

138. (2)

139. (2)

140. (2)

141. (2)

142. (2)

143. (3)

144. (3)

145. (2)

146. (3)

147. (4)

148. (2)

149. (2)

150. (2)

151. (1)

152. (2)

153. (2)

154. (1)

155. (2)

156. (3)

157. (2)

158. (4)

159. (3)

160. (3)

161. (1)

162. (2)

163. (4)

164. (1)

165. (2)

166. (2)

167. (2)

168. (3)

169. (2)

170. (4)

171. (2)

172. (2)

173. (3)

174. (4)

175. (2)

176. (4)

177. (3)

178. (3)

179. (3)

180. (3)

All India Aakash Test Series for Medical-2018 Test - 5 (Code-F (Hints)

2/7

PHYSICS

3. Using Gauss law.

6. Cu

is +ve

Ge

is –ve

8. i = E

r nr

E – i(r) = Terminal voltage

E – ( )E

rr nr

1

⎛ ⎞⎜ ⎟⎝ ⎠

nE

n =Terminal voltage

9. �AB

V

L

� = 40 cm, L = 100 cm

123 6 V

1 2 3

⎛ ⎞ ⎜ ⎟ ⎝ ⎠AB AB

V iR

11. i = 18

3.2 RR = 4

13. Circuit reduces by using Wheatstone Bridge.

15. Q = 1000 × 4.2 × 15

Q = 63000 J in 1 minute

P = 60 sec

Q = 1050 W

16. P =

2V

R, R

1 > R

4 > R

2 > R

3

P 1

R, P

1 < P

4 < P

2 < P

3

22. = 1

24

Q

R =

2

24 (2 )

Q

RQ

1 + Q

2 = 20R2

Now, 1

22

Q R

Q R Q

1 =

220

3R

and Q2 =

240

3R

1 =

1

24

Q

R

and 2 =

2

24 (2 )

Q

R

23. Distance is measured along electric field line.

25. dV Edx

2

3

0

40 ∫ ∫A

O

V

V

dV x dx

VA – V

O = –160 V

26. F = qE

2

31 3cos kp

F qr

27. qV = U

29.

300 V

100

200

100 V 600

i1

i2

Req

= 500

i =100 1

A500 5

i2 =

1 600 6A

5 900 45

V =6

30045

= 40 V

31.10 3 V

6 3

4.5 V

i1

i – i1

i

2

1


–10i1 – 3 + 6(i – i

1) = 0

–16i1 – 3 + 6i

1 = 0 ... (i)


–3i – 6(i – i1) + 4.5 = 0 ... (ii)

On solving (i) & (ii), i1 = 0

32. i1 + i

2 + i

3 = 0

70 0 10

10 20 30

D D DV V V

= 0

HINTS

Test - 5 (Code-F) (Hints) All India Aakash Test Series for Medical-2018

3/7

VD = 40

iAD

=30

310

iBD

=40

220

iCD

=30

130

70 V

0 V

10 V

20

30

D

10

B

C

A

i1

i3

i2

33.2 2

( )kQ q

R x

=

2( ) 1

2

kQ qmv

R

36. qV =

21

2

p

m

39. V = iR

30 = 5R

R = 6 (ideally)

R =V

i(∵ i in R dec)

But R > 6 (non ideally)

40. –g

VR G

I

42. |E1| = |E

2| = |E

3| = E

Enet

= 2E = 3

2⎛ ⎞⎜ ⎟⎝ ⎠

Kp

R

3 2

1

120° E2

E1

E3

43. E = 0 so force is zero inside. Net charge is positive

on sphere therefore it will repel q towards right.

–q

Q

q

44.qE

mg sin

qE = mg sin

9 6 2

2

9 10 (4 10 )

d

=

600 310

1000 5 d = 0.2 m

45.

R

+

+

+

+

+

+ +

+

+

+

+

+

O

V =Vsphere at centre

– Vcavity

=

2 2

0 0

3

6 12

R R

=

2

0

5

12

R

CHEMISTRY

46. Since both have fcc type arrangement so Zeff

= 4

per unit cell

∵ Packing efficiency also same

3

KCl

3

NaCl

1/3

KCl

NaCl

a Volume of unit cell of KCl xso

Volume of unit cell of NaCl ya

a

a

⎛ ⎞ ⎜ ⎟⎝ ⎠

x

y

47. Since (x) with time increasing uniformly so change

in concentration of [A] or [B] with time i.e. d[A]

dt is

constant.

48. Greater the size of ion, lesser the solvation and

higher conductance.

49. H = (Ea)f – (E

a)b

–20 = 60 – (Ea)b

(Ea)b = 80 kJ/mol

50. Rate = k[O3] [O]

∵ [O] = Keq

[O3] [O

2]–1

Rate = kKeq

[O3]2 [O

2]–1

Overall order is = 2 – 1 = 1


4/7

52. ∵ Process is 2H+ + 2e– H2

0.02 M 4.0 atm

H2

2H |H2

2

p0.0591E log

2 [H ]

0.0591 4log

2 (0.02)

0.118 V

53. KI (excess) + AgNO

3 AgI/I– (negative sol)

Al3+ has highest +ve charge, so it is most powerful

coagulating agent.

55. H2O + M H

2 + M(OH)

x

So it can’t form O2 gas

56. Au has higher value of (E°red

) reduction potential

57.3 2 1

m

1.6510 S cm mol

0.15

= 11 × 103 S cm2 mol–1

= 11 × 103 × 10–4 S m2 mol–1

= 1.1 S m2 mol–1

58. Tf = iK

f m

0.2046 = (1 +) 1.86 × 0.1 = 0.1

[OH–] = C = 0.1 × 0.1 = 10–2 M

pOH = –log 10–2 = 2

pH = 14 – 2 = 12

60.i N

icn-factor

NaCl : 2 0.1

0.21

MgCl2: 3 0.3

0.452

4 6

5 0.2K [Fe(CN) ] : 0.25

4

3

4 0.4AlCl : 0.53

3

62. Number of sphere : Number of TV (HCP lattice)

1 : 2

According to given data it is, 1 : 2 2

3

= 3 : 4

so simplest formula is A3B

4

But it is ionic compound so formula is B4A

3.

64. Ni is ferromagnetic solid.

65. ∵ 35.5 g Cl– ions lose = 1 mol e– = NA

so 0.355 g Cl– ions lose = 0.01 mol e– = 0.01 NA

67.

n 1

1/2 1 2

1/2 2 1

(t ) a

(t ) a

⎛ ⎞

⎜ ⎟⎝ ⎠

n 12

3

120 3.2 10

60 8 10

⎛ ⎞ ⎜ ⎟⎜ ⎟⎝ ⎠

2 = (4)n–1

2 = (2)2n–2

2n – 2 = 1

n = 3

2

Unit of K = mol1–n Ln–1 s–1 = mol–1/2 L1/2 s–1

68. Protecting power 1

Gold number

70.

2o

cell cell 2

0.059 [Zn ]E E log

2 [Cu ]

y = c + m x

so intercept (c) = o

cellE 1.1 V

cell

cell

0.059 0.1E 1.1 log

2 0.01

E 1.07 V

71. KCl is strong electrolyte, so its graph is

m

c

72. 2AB22AB(g) + B

2(g)

Initial pressure 100 mm 0 0

Pressure at 5 min 100 – x x

x

2

x(100 x) x 110

2 x = 20 mm

Rate of reaction = 2AB

(P )1 1 20

2 t 2 5

= 2 mm min–1

74. Number of equivalent of FeSO4 =

W It

E F = NV

N.V = 0.036

∵ M = 0.2 so N = 0.4

0.036V 0.09 L

0.4

75. 10 10

2.303 100 2.303 100k log log

70 20 t 10

⎛ ⎞ ⎛ ⎞ ⎜ ⎟ ⎜ ⎟⎝ ⎠ ⎝ ⎠

t = 100 minutes


5/7

76.

EaRT

a

K .

E40,000 /

RT

Ae

T

Ea = 40000 × 2 = 8.0 × 104 Cal

77. HCl and H2O mixture shows negative deviation.

They form maximum boiling azeotropic mixture.

Boiling point should be greater than 100°C.

78. 1v

1 +

2v

2 =

R(v

1 + v

2) for mixing

so R =

6.5

3 = 2.16 atm

79.(I )

(I )

4r 2a

a 624r 220.65 pm

2 2 2 2

81. It is due to absorption of water.

82. Limiting value of radius ratio is 0.414 but actually it

is higher.

So distance should be greater than 2 × 250 pm

OR

r0.525

250

r+ = 131.25 pm

Distance between two nearest Cl– ions = a

2

2r 2r

2

2(131.25) 2(250)

539.08 pm2

So distance is 539.168 pm

83. KI(aq) + I2(s) KI

3(aq)

Number of solute particles remains same, so there

is no change in magnitude of colligative property i.e.

freezing point of solution remains same.

84.0

m 2 4 2 4 3 2(K SO Al (SO ) 24H O)

0 0 3 0 2

m m m 42 (K ) 2 (Al ) 4 (SO )

= 2x + 2y + 4z S cm2 mol–1

85. Due to very high aqueous radius of Li+ in solution, its

mobility is lowest.

While H+ has exceptionally very high ionic mobility.

It can jump from one to another water molecule

easily.

86. Freundlich isotherm, x 1

log logK logPm n

Given, log K = 0.3010 K = 2

Slope = tan45° = 1 = 1

n n = 1

x2P 2 0.2 0.4

m

87. Vapour pressure v/s temp graph is not linear.

88. At normal boiling point vapour pressure of water

= 1 atm = 760 torr

s

3

s

760 P (2 1)So For AgNO , i 2

760 (2 1) 55.5

P 733.56 torr

89. Nearest neighbour number is 6 in a layer.

BIOLOGY

91. It shows both linkage and Choromosomal map but

X-body was discovered in Firefly.

94. No. of genotypes = (3)n,


= 34

= 81

No. of phenotypes = (2)n


= (2)4

= 16

95. Exine is outer wall of pollen grain.

98. Terror of Bengal-water hyacinth (Eichhornia).

99. 6x = 2n = 42

n = 21

x = 7

M = 2n–1 = 41

100. It is an autosomal recessive disease.

101. Haemophilia is X-linked recessive disorder

102. Genotype = AA + ZZ, male birds.

Gametes are (A + Z)

103. In Morgan dihybrid cross parental type progeny are

62.8%. Hence Genotype of w+ m+ = 62.8

4 = 15.7%

105.


6/7

107. Overall masculine development occur in Klinefelter’s

syndrome.

108. It is trisomy of 21st chromosome (2n + 1) = 47.

109. Dominant epistasis : 12 : 3 : 1.

110. Brachydactyly is a autosomal dominant trait.

111. Green seed colour is recessive trait.

112. Father Mother

Ff

× Ff

Free ear lobes(3/4)

FF Ff Ff��

Free ear lobes(1/4)

ff

��

A. Free ear lobed boy = 3 1 3

4 2 8

B. Fused ear lobed girl = 1 1 1

4 2 8

113. The phenotype of test cross progeny is due to the

gametes of RrYyTt, as gametes of rryytt are

recessive, non expressing.

114. Incomplete dominance.

116. In Apple 2n = 34.

118. Embryogenesis is a post fertilisation event.

119. Options (2), (3) and (4) monocarpic plants while in

option.

(1) Peepal and mango are polycarpic plants.

120. Algae are both isogametes and heterogametes but

pollens are not produced.

121. Type of gametes = 2n.

Here, n is heterozygous genes = 22 = 4

123. Phenotype of dihybrid cross in F2 generation.

= Round yellow : Round green : Wrinkled yellow :

Wrinkled green

= 9 : 3 : 3 : 1

Hence, ratio of round green and wrinkled yellow

= 3 : 3

= 1 : 1

124. IA, IB, i

126. Cells of endothecium are persistent.

128. Also called non-endospermic seeds.

129. Ploidy of PEN = Full ploidy of female plant + 1

2ploidy

of male plant = 2n + 1/2(4n) = 4n

Ploidy of zygote = 1

2 ploidy of female plant +

1

2

ploidy of male plant

= 1/2(2n) + 1/2(4n) = n + 2n = 3n

130. Hydrophily is seen in 30 genera, mostly

monocotyledons.

131. Filiform apparatus is present in synergids.

133. Epiblast is present in embryo of monocot seeds.

135. Geiotonogamy can occur on monoecious plant.

137. Fact

138. Lanugo appears at third trimester and is shed before

birth

139. Signals for parturition originate from fully developed

foetus and placenta.

140. Amniocentesis is not a contraceptive technique

ultrasound is used for determination of club foot cleft

palate etc.

141. AMF is secreted by sertoli cells / sustentacular cell

142. After 12 weeks of fertilisation, most of the major

organ systems are formed.

143. Umblical cord contains only foetal blood.

Embryo is susceptible to teratogens maximally

during first trimester of pregnancy.

144. Embryo with 8 to 16 cells is called morula.

145. Meiotic division of secondary oocyte is completed

when sperm enters into the cytoplasm of ovum.

146. GIFT is in-vivo technique.

147. Both ovulation and menstrual cycles are unaffected.

148. POP is an example of mini pill with no estrogen

149. IUDs are widely accepted methods of contraception.

That are inserted by an experienced, expert nurse

or doctor.

150. Terminal methods block only gamete transport.

Hormone functions and gametogenesis are

unaffected.

151. Cyclofem, Depot medroxy provera are hormonal

injectables. Implanon and norplant are implants.

Mala-D is a pill. Sponge is a chemical spermicide.

152. Gonorrhoea – Neisseria gonorrhoeae

Syphilis – Treponema pallidum

Chlamydia – Chlamydia trachomatis

Genital herpes – Herpes simplex virus

Chancroid – Haemophilus ducrei

153. Trichomonas vaginalis, a flagellated protozoa causes

trichomoniasis.

154. Secondary follicles have a layers of granulosa cell

with new theca surrounding primary oocytes.

Follicular cells secrete estrogen.


7/7

� � �

155. Oogonia are arrested at prophase I (diplotene stage)

of meiotic division.

156. Hepatitis B and HIV can be spread by sexual

contact, blood transfusion with infected person.

157. Functional sperms should have proper shape, size

and motility.

158. Secretions of Cowper’s gland neutralise acidity.

Seminal vesicles are paired, tubular, coiled glands,

secrete viscous fluid which constitute main part of

ejaculate. Seminal fluid contains fructose, citric acid

and fibrinogen. Prostate gland is unpaired.

159. Secondary oocyte is formed in tertiary follicle.

160. Nirodh is another name for condom.

Femidom is female condom which is not a

hormonal contraceptive.

161. At puberty only 60,000 – 80,000 primary follicles are

left in each ovary due to atresia.

162. Isthmus part of fallopian tube is closer to uterus.

163. Clones are morphologically and genetically similar

individuals

165. Parathyroid gland is endodermal in origin while other

options are ectodermal.

166. Fact

167. Arrhenotoky – Honey bees, wasp and turkey.

Thelytoky – Lacerta saxicola armeniaca.

Amphitoky – Aphid

168. Lactational amenorrhoea is effective upto 6 months

(maximum) after delivery of the foetus.

169. Menstrual flow results due to breakdown of

endometrial lining

170. P. LH which is essential for maintenance of corpus

luteum.

Q. Estrogen is secreted by follicular cells and it

helps to repair the lost endometrium in

proliferative phase.

R. Progesterone that is essential for maintenance

of endometrium.

171. Venereal diseases are those diseases or infections

that are spread through sexual intercourse.

Measles, diptheria, dengue and yellow fever do not

fall in this category.

172. MTP is never performed to control population growth.

MTP is usually safe upto 12 weeks.

173. Fact

174. Spermatogenia has 46 chromosomes. Meiosis I in

primary spermatocyte results in formation of

secondary spermatocyte (22+X or 22+Y).

Primary oocyte will be diploid with (44+XX)

chromosomes.

175. Colostrum is poor in iron content and contains

2.9 g/dl of fats. Calories are obtained both from fat

and lactose. Mammary glands are modified sweat

glands. Ejection of milk is stimulated by oxytocin.

176. Simple binary fission – Amoeba

Longitudinal binary fission – Euglena ,Vorticella

Oblique binary fission – Ceratium, Gonyaulax

Transverse binary fission – Paramecium, Planaria.

177. Sexual reproduction is an elaborate, complex and

slow process

178. Butterfly 1-2 weeks, Crocodile 60 years, Crow

15 years, Tortoise 100-150 years

179. Spermatogenesis essentially requires temperature

(2-2.5 °C) lower than 37°C.

180. Life span is the period from birth to natural death of

an organism. Maximum life span is characteristic of

species while life expectancy is characteristic of

population.

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