Chajjta Heights, Below Diamond Restaurant,Sanjauli Chowk Ph. 8091031077, 0177-2645203

Sanjauli Centre:-

Chajjta Heights, Below Diamond Restaurant,Sanjauli Chowk Ph. 8091031077, 0177-2645203 , 0177-2645209

DATE: +1 BATCH MEDICAL TEST – 2

SECTION – 1 PHYSICS

1.The magnitude and direction of the resultant of two vectors in terms of their magnitudes and angle between them is

(a)R = tan

(b) R = tan

(c)R = tan

(d)R = tan

2.Two forces P and Q have a resultant perpendicular to P. The angle between the forces is

(a)tan – 1 (b) tan - 1

3. If and the magnitudes of are 5, 4 and 3 units respectively, the angle between is

(a)cos – 1 (b)cos – 1

4. What are the components of a vector along the directions of () and ()?

(a) (b)

5. What is the angle between and

(a)00(b) radian

6. If , then the angle between is

(a) 00 (b) 600(c)900 (d) 1200

7. In figure, equals

(a)

(b)

(c)

(d)

8. The ratio of maximum and minimum magnitudes of the resultant of two vectors is 3:1, now,

(a) (b) (c) (d)

9. The area of a parallelogram formed from the vectors and as adjacent sides is

(a) units (b) 64 units

10. Given: and . The angle which makes with Y – axis is

(a) 00 (b) 450(c) 600(d) 900

11. Two forces are such that the sum of their magnitudes is 18 N and their resultant is 12N which is perpendicular to the smaller force. Then the magnitudes of the forces are:

(a) 12 N, 6N (b) 13 N, 5N

12. Two non – zero vectors are such that . What is the angle between ?

(a) 00 (b) 900(c) 600 (d) 1800

13. The resultant of the three vectors shown in figure is

(a)r

(b) 2r

(d) r()

14.Angle between two vectors is

(a)300 (b) 600 (c) 450 (d) 900

15. If , then the angle between A and B is

(a) (b) (c) (d)

16. A particle is moving eastwards with a velocity of 5 m/s. In 10s the velocity changes to 5 m/s northwards. The average acceleration in this time is

(a) zero

(b) ms – 2 towards north – west

(d) ms – 2 towards north

17. Three forces act on a body. The body will certainly have an acceleration if these are:

(a) 7N, 8N, 14N (b) 10N, 4N, 12N

18. If , then select incorrect statement.

(a)If = 4, then angle between is 300

(b) If , then angle between is 300

(d)If , then angle between is 900

19. A vector remains unchanged on:

(a) rotating it through some angle

(b) taking its cross product with a unit vector

(d) shifting it parallel to itself

20. A car with a vertical wind shield moves along in a rainstorm at speed of 40 km h – 1. The raindrops fall vertically with a terminal speed of 20 ms – 1 . The angle at which the raindrops strike the wind shield is

(a) tan – 1 (2/3) (b) tan – 1 (3/2)

21. Rain is falling vertically with a speed of 35 ms – 1. Wind starts blowing after some time with a speed of 12 ms – 1 in east to west direction. In which direction should a boy waiting at a bus stop hold his umbrella, with the vertical?

(a) sin – 1 (b) cos – 1

22.For any two vectors , if = , the magnitude of , is

(a) (b) A + B

23. The sum and difference of two perpendicular vectors of equal lengths are

(a) of equal lengths and have an acute angle between them

(b) of equal lengths and have an obtuse angle between them

(d) also perpendicular and of equal lengths.

24.If and a +b + c, then the angle included between is

(a) 900 (b) 1800 (c) 1200 (d) zero

25.Two vectors are given by and . Find the third vector .

(a) (b)

26. Pick out the only vector quantity in the following list:

(a)pressure

(b) impulse

(d) coefficient of friction.

27. A scalar quantity is one that

(a) is conserved in a process

(b) can never take negative values

(d) has the same value for observers with different orientations of axes.

28. A jet airplane travelling at the speed of 500 km h – 1 ejects its products of combustion at the speed of 1500 kmh – 1 relative to the jet plane. The speed of the products of combustion with respect to an observer on the ground is

(a) 500 kmh – 1 (b) 1000 kmh – 1

29. The dot product of two vectors of magnitudes 3 units and 5 units cannot be:

(i) – 20 (ii) 16 (iii)- 10 (iv) 14

(a) (i, iii) (b) (i, ii)

30. The magnitude of pairs of displacement vectors are given. Which pairs of displacement vectors cannot be added to give a resultant vector of magnitude 13 cm?

(i) 4cm, 12 cm(ii) 4 cm, 8 cm

(iii) 6 cm, 8 cm (iv) 1 cm, 15 cm

(a)(ii, iv)(b) (i, ii)

31. A man travels 1 mile due east, then 5 mile due south, then 2 mile due east and finally 9 mile due north; how far is he from the starting point?

(a) 3 mile (b) 5 mile

32. The resultant of two forces, one double the other in magnitude, is perpendicular to the smaller of the two forces. The angle between the two forces is:

(a) 1200 (b) 600 (c) 900 (d) 1500

33. If vectors and are coplanar, the value of y is:

(a) 81 (b) 36 (c) 23 (d) 9

34.Minimum number of coplanar vectors of equal magnitude whose vector sum could be zero, is:

(a) 2 (b) 3 (c) 4 (d) 6

35. Resultant of two forces has magnitude 50 N. The resultant is inclined to at 600 and to at 300. Magnitudes of , respectively, are:

(a) 25 N, 25 N (b)20 N, 20

36. are vectors expressed as and . Unit vector perpendicular to is:

(a) (b)

37.If are the angles which a vector makes with X, Y and Z – axes respectively, then sin2 is equal to:

(a) 3 (b) 2 (c) 1 (d)0

38. A vector is rotated through angle about its tail. Change of position vector of its tip is:

(a) A sin (b) 2A cos

39. A particle starting from the origin (0, 0) moves in a straight line in the (X, Y) plane. Its coordinates at a later time are (). The path of the particle makes with the X – axis an angle of:

(a) 300 (b) 450 (c) 600 (d) 00

40. If , then projection of will be:

(a) (b) (c) (d)

41. The angle subtended by vector

with the X – axis is:

(a) sin – 1 (b) sin – 1

42. The position vectors of two balls are given by The distance between two balls is:

(a) 4m (b) 3m (c) 5m (d) 4m

43. Two force vectors of same magnitude are arranged in the following manners:

Magnitude of resultant force is maximum for:

(a) I (b) II (c) III (d) II and III

44. A particle is situated at the origin of a coordinate system. The following forces begin to act on the particle simultaneously.

The particle will move:

(a)along Y – axis (b) along Z – axis

45.A boat crosses a river of which 1 km in shortest path in 15 minutes. If the speed of boat in still water is 5 km/h, then what is the speed of the river?

(a) 1 km/h (b) 3 km/h

SECTION – II CHEMISTRY

46. Which of the following statements does not from a part of Bohr’s model of hydrogen atom?
(a) Energy of the electrons in the orbit is
quantized.
(b) The electrons in the orbit nearest to the
nucleus has the lowest energy.
(c) Electrons revolve in different orbits
around the nucleus.
(d) The position and velocity of the electrons
in the orbit cannot be determined
simultaneously.

47.Which of the following electron transitions in hydrogen atom will require largest amount of energy?
(a) From n =1 to n= 2(b) From n= 2 to n= 3
(c) From n= to n= 1(d) From n= 3 to n= 5

48.The ionization energy of the electron in the 1 s- orbital of the hydrogen atom is 13.6 eV. The energy of the electron after promotion to 2nd orbit is:
(a) -3.4 eV (b) -13.6 eV
(c) -27. 2eV (d) 0.0 eV

49.The wavelength of the radiation emitted when an electron falls from Bohr orbit 4 to 2 in hydrogen atom is:
(a) 243 nm (b) 972 nm
(c) 486 nm (d) 182 nm

50.The energy of the electron in the first orbit of He+ is – 871. 6 . The energy of the electron in the first orbit of hydrogen would be:
(a) -871.6 (b) -435
(c) -217.9 (d) -108. 9

51.According to Bohr theory, the angular momentum of electron in 5th orbit is:
(a) (b) (c) (d)

52.The wavelength of electron waves in two orbits is 3:5. The ratio of kinetic energy of electrons will be:
(a) 25:9 (b) 5:3 (c) 9:25(d) 3:5

53. The wavelength of the third line of the Balmer series for a hydrogen atom is

(a) (b)

54. In Bohr series of lines of hydrogen spectrum, the third line from the red end corresponds to which one of the following inter – orbit jumps of the electron for Bohr orbits in an atom of hydrogen

(a) 5 2 (b) 4 1 (c) 2 5 (d)3 2

55 The de Broglie wavelength associated with a ball of mass 1kg having kinetic energy 0.5 J is:

(a) 6.62610 – 34 m(b) 13.20 10 – 34 m

56. The uncertainties in the velocities of two particles A and B are 0.05 and 0.02 m s – 1 respectively. The mass of B is five times to that of the mass of A. What is the ratio of uncertainties in their positions?

(a) 2 (b) 0.25 (c) 0.4 (d) 1

57. Based on the equation, E = - 2.178 10 – 18 J , certain conclusions are written. Which of these is not correct?

(a)Equation can be used to calculate the change in energy when the electron changes orbital.

(b)For n = 1, the electron has a more negative energy than it does for n = 6 which means that the electron is more loosely bound in the smallest allowed orbit.

(c)The negative sign in equation simply means that the energy of electron bound to the nucleus is lower than it would be if the electrons were at the infinite distance from the nucleus.

(d) Larger the value of n, the larger is the orbit radius.

58. If an electron, a proton and an particle have same de Broglie wavelengths, their kinetic energies are related to one another as:

(a)electron > proton > particle

(b)proton > electron > particle

(d) electron = proton = particle

59. The ratio of ionisation energies of Li2+ and Be3+ is:

(a) (b) (c) (d)

60. The velocity of an electron in a certain Bohr orbit of H – atom bears the ratio 1: 275 to the velocity of light. The shell number is:

(a) 1 (b) 2 (c)3 (d)4

61.An element with mass number 81 contains 31.7% more neutrons as compared to protons. Find the symbol of the atom.

(a) (b) (c) (d)

62. The frequency of radiation absorbed or emitted when transition occurs between two stationary states with energies E1 (lower) and E2 (higher) is given by

(a) (b)

63.Which of the following conclusions could not be derived from Rutherford’s α particle scattering experiment

(a)Most of the space in the atom is empty

(b) The radius of the atom is about

10-10 m while that of nucleus is 10-15m

(d) Electrons and the nucleus are held together by electrostatic forces of attraction.

64.Which of the following options represents the correct graph for photoelectrons?

(d) None of these

65.Calculate the wavelength of light required to break the bond between two chlorine atoms in a chlorine molecule, the Cl- Cl bond energy is 243 kJ mol-1 (h=6.6×10-34) Js; c=3×108 ms-1 Avogadro; s number =6.02×10-23mol-1

(a) 4.91×10-7 m(b)4.11×10-6m

66The wavelength of a spectral line emitted by hydrogen atom in the Lyman series is cm. What is the value of n2?

(where R= Rydberg constant)

(a) 2(b) 3 (c) 4(d) 1

67.Which of the following elements outermost orbit’s last electron has magnetic quantum number m = 0?

(a) Na (b)O (c)Cl (d) N

68. Which of the following electronic configurations have zero spin multiplicity?

69. Total number of electrons n = 4, ml = +1

(a) 4 (b) 8 (c) 6 (d) 32

70. The number of d – electrons in Fe2+ (Z = 26) is not equal to the number of electrons in which one of the following?

(a) p – electron in Cl(Z = 17)

(b) d – electrons in Fe(Z = 26)

(d) s – electron in Mg (Z = 12)

71. Energies of subshells in H – atom depend upon:

(a) n value (b) (n + l) value

72. The number of spherical nodes, angular nodes and nodal plane for 3pz in proper order are:

(a) 3, 1, 0 (b) 1, 1, 1

73.Which of the following statements about the electrons incorrect?

(a) It is a negatively charged particle

(b) The mass of electron is equal to the mass of neutron

(d) It is constituent of cathodes rays

74. The nitride ion in lithium nitride is composed of

(a) 7 protons + 10 electrons

(b) 10 protons +10 electrons

(d) 10 protons + 7 electrons

75. The ratio between the neutrons in C and Si with respect to atomic masses 12 and 28 is

(a) 2:3 (b) 3:2(c) 3:7 (d) 7:3

76. Which of the following pairs is isoelectronic?

(a) Ne, Cl (b) Ca2+,

77. In hydrogen atomic spectrum, a series limit is found at 12186.3 cm – 1. Then, it belongs to

(a) Lyman series (b) Balmer series

(e) Pfund series

78. The radius of the first Bohr orbit of the H –atom is r. Then, the radius of the first orbit of Li2+ will be

(a) r/9(b) r/3 (c) 3r (d) 9r

79. Splitting of spectral lines under the influence of magnetic field is called

(a) Zeeman effect (b) Stark effect

80. The first emission line of hydrogen atomic spectrum in the Balmer series appears at

(R = Rydberg constant)

(a) cm – 1 (b) cm – 1

81. In Sommerfeld’s modification of Bohr’s theory, the trajectory of an electron in a hydrogen atom is

(a) a perfect ellipse

(b) a closed ellipse like curve, narrower at the perihelion position and flatter at the aphelion position

(d) a rosette

82. Who gave uncertainty principle?

(a) Einstein (b) Heisenberg

83. Which of the following statements is true?

(a) The kinetic energy of an electron is inversely proportional to square of its momentum

(b) de – Broglie wavelength associated with a particle is directly proportional to its mass

(d) The wavelength associated with an electron is directly proportional to square root of accelerating potential

(e) The kinetic energy of an electron is directly proportional to accelerating potential

84.The maximum number of electrons which can be held by subshell with azimuthal quantum number in an atom is given by

(a)(2 +1) (b) (2 +2)

85. The correct set of four quantum numbers for the valence electron of rubidium atom

(Z = 37) is

(a) 5, 1, 1, + (b) 6, 0, 0, +

86. Out of the following electronic arrangements for outer electronic configuration.

The most stable arrangement is

(a)I (b) II (c) III(d) IV

87.Nitrogen has the electronic configuration1s2, 2s2, 2px1, 2py1, 2pz1 and not 1s2, 2s2, 2px2, 2py1, 2pz0, which is determined by

(a) Pauli’s exclusion principle

(b) Aufbau principle

(d) Uncertainty principle

88. The correct order of increasing energy of atomic orbitals is

(a) 5p < 4f < 6s < 5d (b) 5p < 6s < 4f < 5d

89. represents

(a) node (b) orbital

90. If highest magnetic quantum number of a given atom is represented by – 3, what will be its principal quantum number?

(a) 2 (b)3(c) 4 (d)5

SECTION - III BIOLOGY

91.Roots play insignificant role in absorption of water in

(a) pea (b) wheat (c) sunflower (d) Pistia.

92. Stems modified into flat green organs performing the functions of leaves /reproductive organ are known as

(a) Phylloclades(b) scales

93. Leaf tendrils are found in

(a) peas (b) cucumber

94.Cymose inflorescence is present in

(a) Solanum (b) Sesbania

95. Free – central placentation is found in

(a) Dianthus (b) Argemone

96. Placenta and Pericarp are both edible portions in

(a) Apple(b) banana

97.The wheat grain has an embryo with one large, shield shaped cotyledon known as

(a) scutellum (b) coleoptile

98. Tricarpellary, syncarpous gynoecium is found in flowers of

(a) Fabaceae (b) Poaceae

99. Colchincine is obtained from which of the following families?

(a) Poaceae (b) Brassicaceae

100. The correct floral formula of chili is

101.Which of the following is not a stem modification?

(a) Tendrils of cucumber

(b) Flattened structures of Opuntia

(d) Thorns of citrus

102. An example of edible underground stem is

(a) Carrot(b) groundnut

103. The “eyes” of the potato tuber are

(a) root buds (b) flower buds

104. Example of corm is

(a) Ginger (b) Colocasia

105. Phyllode is present in

(a) Asparagus (b) Euphorbia

106. Whorled, simple leaves with reticulate venation are present in

(a) Calotropis (b) neem

107. Inflorescence is racemose is

(a) brinjal (b) tulip

108. Proximal end of the filament of stamen is attached to

(a) placenta (b) thalamus or petal

109. Axile placentation is present in

(a) pea (b) Argemone

110.Flowers are unisexual in

(a) china rose (b) onion

111. When the margins of sepals or petals overlap one another without any particular direction, the condition is termed as

(a) vexillary (b) imbricate

112. In china rose the flowers are

(a) zygomorphic, hypogynous with imbricate aestivation

(b) zygomorphic, epigynous with twisted aestivation

(d) actinomorphic, epigynous with valvate aestivation

113. Placentation in tomato and lemon is

(a) parietal (b) free central

114. The gynoecium consists of many free pistils in flowers of

(a) Aloe(b) tomato

115. Vexillary aestivation is characteristic of the family

(a) Fabaceae (b) Asteraceae

116. Flowers are zygomorphic in

(a)mustard (b) gulmohur

117. The ovary is half inferior in flowers of

(a) peach (b) cucumber

118. Which one of the following is monoecious?

(a) Marchantia (b) Cycas

119. Keel is characteristic of the flowers of

(a) gulmohur (b) cassia

120. Ovary is half – inferior in the flowers of

(a) guava (b) plum

121. The technical term used for the androecium in a flower of china rose (Hibiscus rosa – sinensis) is

(a) Monadelphous (b) diadelphous

122. Clove is the modified

(a) stigma (b) floral bud

123.An example of axile placentation is

(A) dianthus (b) lemon

124. Gynoecium with fused carpels

(a) syncarpous (b) apocarpous

125. The mango fruit is a drupe type in which the mesocarp is

(a) fibrous (b) stony hard

(e) thin and dry

126. The coconut water and the edible part of coconut are equivalent to

(a) endosperm (b) endocarp

127.A drupe develops in

(a) mango (b) wheat

128. Edible part of mango is

(a) epicarp (b) endocarp

129. Aril is the edible part of

(a) apple (b) litchi

130. The fruit is chambered, developed from inferior ovary and has seeds with succulent testa in

(a) guava (b) cucumber

131. Seed coat is not thin and membranous in

(a) groundnut (b) gram

132. Endosperm is consumed by developing embryo in the seed of

(a) pea (b) maize

133. The standard petal of a papilionaceous corolla is also called

(a) vexillum (b) corona

134. Colchicine is obtained from Colchicum autumnale. It belongs to the family

(a) Liliaceae (b) Solanaceae

135. Lady’s finger belongs to Family

(a) Liliaceae (b) Brassicaceae

136. Cork cambium and vascular cambium are the examples of

(a) apical meristem (b) secondary meristem

137. Which one of the following is not a lateral meristem?

(a) Intrafascicular cambium

(b) Interfascicular cambium

(d) Intercalary meristem

138. The length of different internodes in a culm of sugarcane is variable because of

(a) size of leaf lamina at the node below each internode

(b) intercalary meristem

(d) position of axillary buds

139. The chief water conducting elements of xylem in gymnosperms are

(a) vessels (b) fibres

140. Chlorenchyma is known to develop in the

(a) cytoplasm of Chlorella

(b) mycelium of a green mould such as Aspergillus

(c)spore capsule of a moss

(d) pollen tube of Pinus

141. Tracheids differ from other Tracheary elements in

(a) having casparian strips

(b) being imperforate

(d) being lignified

142. Function of companion cell is

(a) providing energy to sieve element for active transport

(b) providing water to phloem

(d) loading of sucrose into sieve elements

143. At maturity, which of the following is non – nucleated?

(a) Palisade cell (b) Sieve cell

144. Closed vascular bundles lack

(a) cambium (b) pith

145. Cortex is the region found between

(a) epidermis and stele

(b) pericycle and endodermis

(d) endodermis and vascular bundle

146. Meristematic tissue responsible for increase in girth of tree trunk is