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ANSWERS

1. (2)

2. (2)

3. (3)

4. (3)

5. (4)

6. (4)

7. (3)

8. (1)

9. (3)

10. (4)

11. (2)

12. (2)

13. (4)

14. (3)

15. (2)

16. (4)

17. (3)

18. (1)

19. (2)

20. (2)

21. (4)

22. (3)

23. (4)

24. (4)

25. (2)

26. (2)

27. (2)

28. (3)

29. (2)

30. (1)

31. (3)

32. (2)

33. (2)

34. (4)

35. (3)

36. (4)

37. (2)

38. (3)

39. (4)

40. (2)

41. (4)

42. (3)

43. (2)

44. (4)

45. (4)

46. (4)

47. (4)

48. (1)

49. (4)

50. (2)

51. (4)

52. (1)

53. (1)

54. (1)

55. (4)

56. (2)

57. (3)

58. (1)

59. (4)

60. (4)

61. (2)

62. (4)

63. (4)

64. (4)

65. (2)

66. (3)

67. (3)

68. (1)

69. (3)

70. (1)

71. (3)

72. (2)

73. (2)

74. (1)

75. (4)

76. (4)

77. (1)

78. (1)

79. (4)

80. (2)

81. (2)

82. (3)

83. (4)

84. (2)

85. (1)

86. (3)

87. (2)

88. (1)

89. (4)

90. (4)

91. (3)

92. (1)

93. (4)

94. (2)

95. (4)

96. (3)

97. (4)

98. (2)

99. (3)

100. (1)

101. (1)

102. (3)

103. (1)

104. (3)

105. (1)

106. (3)

107. (4)

108. (4)

109. (2)

110. (3)

111. (2)

112. (2)

113. (1)

114. (3)

115. (2)

116. (4)

117. (2)

118. (4)

119. (3)

120. (4)

121. (2)

122. (1)

123. (3)

124. (2)

125. (3)

126. (4)

127. (2)

128. (3)

129. (4)

130. (3)

131. (4)

132. (1)

133. (3)

134. (2)

135. (3)

136. (2)

137. (3)

138. (3)

139. (3)

140. (2)

141. (3)

142. (2)

143. (3)

144. (3)

145. (4)

146. (3)

147. (2)

148. (4)

149. (2)

150. (3)

151. (4)

152. (2)

153. (4)

154. (4)

155. (4)

156. (4)

157. (4)

158. (2)

159. (2)

160. (4)

161. (3)

162. (3)

163. (1)

164. (4)

165. (3)

166. (2)

167. (2)

168. (2)

169. (2)

170. (2)

171. (4)

172. (4)

173. (2)

174. (3)

175. (4)

176. (2)

177. (2)

178. (2)

179. (3)

180. (3)

Regd. Office: Aakash Tower, 8, Pusa Road, New Delhi-110005, Ph. 011-47623456

MM : 720 Mock Test for NEET - 2020 Time : 3 Hrs.

Home Assignment – 9

12/07/2020

(2)

Home Assignment-9 (Answers and Hints) Mock Test for NEET - 2020

Answers and Hints

1. Answer (2)

2. Answer (2)

10 10 10 3010 m/s

6av

V

3. Answer (3)

v = 27 – 3t2 = 0 t = 3 s

a = –6t = – 6(3) = –18 m/s2

4. Answer (3)

VMC

= VM

– VC

= VMT

+ VT – V

C

= –5 + 60 + 10 = 65 km/h east

5. Answer (4)

2 22

max

3cos 30

2

sin / 2

2 2 8

u u uH

g g g

6. Answer (4)

7. Answer (3)

2

3

ˆ ˆ12 3

ˆ4 3

ˆ ˆ32 6 m/s

a t i j

v t i tj

i j

8. Answer (1)

T = m(g – a) = (835 + 65) (10 – 1) = 8100 N

9. Answer (3)

4500 20 10 900

150 kg/s

m

m

10. Answer (4)

11. Answer (2)

PHYSICS

12. Answer (2)

4'

3g GR

13. Answer (4)

14. Answer (3)

3

15 4 20

m R R

m

15. Answer (2)

16. Answer (4)

2

2

4 3 6

2 12

17. Answer (3)

x(2.4) + (1 – x) 14.4 = 7.2

3

5

21

5

x

x

ratio 3 : 2

18. Answer (1)

19. Answer (2)

20. Answer (2)

2

38300

27

9300 675 K

4

Rise 675 300 375 K

T

T

Regd. Office: Aakash Tower, 8, Pusa Road, New Delhi-110005, Ph. 011-47623456

MM : 720 Mock Test for NEET - 2020 Time : 3 Hrs.

Home Assignment – 9

12/07/2020

(3)

Mock Test for NEET - 2020 Home Assignment-9 (Answers and Hints)

21. Answer (4)

10.72%

2

T L

T L

22. Answer (3)

23. Answer (4)

24. Answer (4)

50 – 6 = 44 dB

25. Answer (2)

0 0 0 0

0

4 4

4 4 4 4

Q q R rV

R r R r

R r

26. Answer (2)

4

3 / 4 3eq

V V VI

R R R

27. Answer (2)

1

3R A

28. Answer (3)

29. Answer (2)

2

2

h hmvr mv

r

30. Answer (1)

ratio 1 : 1k qV

31. Answer (3)

32. Answer (2)

0.042 9315.586 MeV

7

33. Answer (2)

1

161: 2

1

8

X

Y

34. Answer (4)

10.5 DP

f

35. Answer (3)

sintan

cos

pE

pE

36. Answer (4)

42 × 4 = 64 W

37. Answer (2)

0 0

2 4

I qB

R R

38. Answer (3)

10 V1A

10I

39. Answer (4)

2 2

120 80 30 130 VV

40. Answer (2)

2

0 0 0

0

1 2

2

I IE E

C C

41. Answer (4)

42. Answer (3)

43. Answer (2)

sin2

30

sin2

m

m

A

A

44. Answer (4)

45. Answer (4)

2.46 eVhc

E

CHEMISTRY

46. Answer (4)

Structure I and III have same configuration

Structure II and III have different configuration

47. Answer (4)

Because of absence of chiral carbon.

48. Answer (1)

Minimum 6 ‘C’ alkane is required for position isomers.

49. Answer (4)

50. Answer (2)

51. Answer (4)

52. Answer (1)

Al4C3 + H

2O 4Al(OH

3) + 3CH

4. Maximum

volume of gas will be released.

(4)

Home Assignment-9 (Answers and Hints) Mock Test for NEET - 2020

53. Answer (1)

I2O5 + 5CO I

2 + 5CO

2

CO(g)

concentration decreases therefore equilibrium

shift towards forward side.

54. Answer (1)

55. Answer (4)

56. Answer (2)

57. Answer (3)

58. Answer (1)

(d) and (c) structure N have sp3 hybridisation while (a)

and (b) structure N have sp2 hybridisation.

59. Answer (4)

60. Answer (4)

[Cu(NH3)4]SO

4 dsp2 hybridization

61. Answer (2)

Due to conjugation with C = O of product

O

OH

O

–H O2

62. Answer (4)

Due to smaller size of zinc.

63. Answer (4)

64. Answer (4)

65. Answer (2)

66. Answer (3)

67. Answer (3)

Number of moles mass 1

molar mass 22.4

Volume of gas = n × 22.4 L = 1

22.4 1 L22.4

68. Answer (1)

Tb = ik

b.m

b

b

Tk

2 1

69. Answer (3)

O /H /H O2 2

F /F2

E 1.23 V

E 3.05 V

70. Answer (1)

71. Answer (3)

72. Answer (2)

73. Answer (2)

Hg is liquid at room temperature.

74. Answer (1)

Na2CO

3 + 2HCl 2NaCl + H

2O + CO

2

75. Answer (4)

76. Answer (4)

77. Answer (1)

Acetaldehyde reacts with NaHSO3.

78. Answer (1)

H C = CH2

CN represents vinyl cyanide

79. Answer (4)

Birch reduction gives trans product.

80. Answer (2)

81. Answer (2)

OH

CH OH2

K CO2 3

CH I3

OCH3

CH OH2

+

82. Answer (3)

H C –C – Br3

H C–C–CH3 3

H C–C–CH3 3

CH MgI3

(i) CH MgI3

(ii) NH Cl4

O O

OH

CH3

83. Answer (4)

84. Answer (2)

85. Answer (1)

86. Answer (3)

87. Answer (2)

250K

2 2 3NO NO N O

�����⇀↽�����

88. Answer (1)

89. Answer (4)

90. Answer (4)

(5)

Mock Test for NEET - 2020 Home Assignment-9 (Answers and Hints)

BOTANY

91. Answer (3)

Lion, Mango, Brinjal and Dog - species.

92. Answer (1)

Fungi as mycorrhiza.

93. Answer (4)

Chemosynthetic autotrophic bacteria.

94. Answer (2)

Motile stage is present in gametes of acellular slime

moulds.

95. Answer (4)

Viruses.

96. Answer (3)

Chemotaxonomy.

97. Answer (4)

Non motile spores and gametes in red algae.

98. Answer (2)

A - Funaria, B - Ginkgo, C - Sunflower

99. Answer (3)

Offset.

100. Answer (1)

Basal in cereals and sunflower family.

101. Answer (1)

102. Answer (3)

Secondary meristems.

103. Answer (1)

Dicot stem

104. Answer (3)

Primary xylem replaces pith.

105. Answer (1)

106. Answer (3)

Nucleolus organising region.

107. Answer (4)

108. Answer (4)

Microspore - N

Microspore mother cell 2 N with 60 chromosomes

and 20 pg DNA.

In S-phase 60 chr./40pg DNA

109. Answer (2)

110. Answer (3)

Frankia, Rhodospirillum, Rhizobium Nitrogen fixation

111. Answer (2)

C4 - plant.

112. Answer (2)

5 NADH2 and 1 FADH

2 during terminal oxidation

through ETS will transport 5 × 3 pairs of H+ and 1 × 2

pairs of H+.

113. Answer (1)

114. Answer (3)

Perennial plant.

115. Answer (2)

Zygotic meiosis.

116. Answer (4)

Each anther lobe has two theca.

117. Answer (2)

3 Antipodal cells + 2 synergids + 1 egg cell.

118. Answer (4)

Dioecious plant.

119. Answer (3)

Thalamus also contributes to form edible part in fruit.

120. Answer (4)

Incomplete dominance for flower colour, F1 with tall

and pink.

TtRr (tall and pink) X ttrr (dwarf and white)

121. Answer (2)

F1 O - yellow and white.

122. Answer (1)

123. Answer (3)

Recessive autosomal gene disorders.

124. Answer (2)

Reverse transcription.

125. Answer (3)

RNA is more labile and unstable due to 2’ OH in ribose.

Thymine provides chemical stability not the structural

stability.

(6)

Home Assignment-9 (Answers and Hints) Mock Test for NEET - 2020

126. Answer (4)

Split gene

127. Answer (2)

Anticodon - ACC (tryp)

Anticodon - UAC (meth.)

128. Answer (3)

129. Answer (4)

130. Answer (3)

131. Answer (4)

132. Answer (1)

Uniform temperature, maximum leaching, poor base

contents.

133. Answer (3)

1 2 3(T ) (T ) (T )Tree Herbivores Carnivores .

134. Answer (2)

135. Answer (3)

Electrostatic precipitator.

ZOOLOGY

136. Answer (2)

If the blood level of Y decreases then due to negative

feedback inhibition the level of X will increase, so that

the level of Y is maintained to its normal level.

137. Answer (3)

Iodothyrorines are lipid soluble hormones, so they can

directly enter the cell and binds with the intracellular

receptors in nucleus to form hormone receptor complex

and stimulates the gene expression.

138. Answer (3)

Na+ – K+ pump is responsible for maintaining resting

potential.

139. Answer (3)

Inflammatory response is included in non-specific

chemical defense mechanism; the area surrounding

the wound becomes red due to the release of

histamine.

140. Answer (2)

ATS injection is anti-tetanus serum injection. It

contains preformed antibodies for tetanus toxin.

141. Answer (3)

142. Answer (2)

If the blood groups is A–, then the person has A antigen

and B antibodies, and no Rh antigen or antibodies.

143. Answer (3)

Macrophages are called HIV factory. The number of

macrophages are not depleted.

144. Answer (3)

Aldosterone is mineralocorticoid produced by

outermost layer of adrenal cortex i.e., zona

glomerulosa in response to decrease in the level of

Na+ ions in the blood plasma.

145. Answer (4)

Knee jerk reflex is monosynaptic reflex, so interneuron

is absent.

146. Answer (3)

147. Answer (2)

148. Answer (4)

Sexual stages or gametocytes develop in the RBCs

of man.

149. Answer (2)

150. Answer (3)

151. Answer (4)

High levels of estrogen hormone will stimulate

endometrial thickening.

152. Answer (2)

153. Answer (4)

Pivot joint allows considerable movement and there

is the presence of synovial cavity.

154. Answer (4)

155. Answer (4)

Rods adapt slowly.

156. Answer (4)

PCT is lined with brush bordered cuboidal epithelium.

While DCT has fewer microvilli.

157. Answer (4)

158. Answer (2)

159. Answer (2)

Otolith organ is concerned with balancing. There is

one sensory spot in utricle and one in saccule called

maculae.

160. Answer (4)

ADH hormone is also called vasopressin, it increases

blood pressure, increase glomerular blood flow and

thereby GFR.

161. Answer (3)

162. Answer (3)

(7)

Mock Test for NEET - 2020 Home Assignment-9 (Answers and Hints)

163. Answer (1)

The maximum amount of air a person can breathe out

after a forced inspiration is vital capacity = ERV + TV

+ IRV.

164. Answer (4)

Vincristine and vinblastine cause disassembly of

and tubulin protein of microtubules.

165. Answer (3)

Non-competitive inhibition cannot be overcome by

increasing the concentration of the substrate.

166. Answer (2)

167. Answer (2)

168. Answer (2)

Rhythm method is also called periodic abstinence.

169. Answer (2)

170. Answer (2)

171. Answer (4)

In cartilaginous fishes in males the pelvic fins bear

claspers.

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172. Answer (4)

The first movements of the foetus and the appearance

of hair on the head are usually observed during the

5th month.

173. Answer (2)

In differentiated cells the telomerase activity is low.

174. Answer (3)

175. Answer (4)

In female P. americana a pair of spermathecae are

present in 6th abdominal segment.

176. Answer (2)

177. Answer (2)

A single outcross and remove inbreeding depression.

178. Answer (2)

Silver fish is Lepisma, a wingless insect.

179. Answer (3)

180. Answer (3)

Edition: 2020-21