UKPSC Lab Assistant 2024: Lab Assistant, Forensic Science Laboratory (Group-C) Exam, General Knowledge, General Studies and Subject Related Knowledge ( Physics)
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SECTION – A
(General Knowledge & General Studies)
1. What is full form of CPU ?
(a) Computer Processing Unit (b) Computer Principle Unit
(c) Central Processing Unit (d) Control Processing Unit
2. Who had established the ‘Ajivika’ Sect ?
(a) Purāna Kassap (b) Makhali Goshala (c) Ajita Kesakamblin (d) Ajeetnath
3. At which place Dadabhai Naoroji had formed ‘East India Association’ in 1866 ?
(a) Bombay (b) Poona (c) Paris (d) London
4. Which Parmar ruler studied at Mayo College, Ajmer ?
(a) Keerti Shah (b) Pradeep Shah (c) Lalit Shah (d) Pratap Shah
5. Which Chand dynasty ruler had established the collectorates namely ‘Nyowali’ and
‘Bishtawali’ ?
(a) Vimal Chand (b) Laxmi Chand
(c) Baj Bahadur Chand (d) Rudrachand
6. In which festival local deity ‘Deval’ is worshipped ?
(a) Chantol (b) Harela (c) Holi (d) Olgiya
7. A popular song sung by the shepherds is
(a) Chaiti Geet (b) Bajuband (c) Thadiya (d) Chhura
8. In which state of India Talcher coal-field is located ?
(a) Odisha (b) Bihar (c) West Bengal (d) Maharashtra
9. In which year caste census was conducted for the first time in India ?
(a) 1931 (b) 2001 (c) 1871 (d) 2021
10. Arrange the following water channels in terms of their volume/size in the ascending order ?
(a) Gad, River, Gadhera (b) Gad, Gadhera, River
(c) Gadhera, Gad, River (d) River, Gad, Gadhera
11. According to the census 2011 what is the sex-ratio among scheduled tribes in Uttarakhand ?
(a) 960 (b) 965 (c) 962 (d) 963
12. ‘Bharat’ Campaign is associated with –
(a) Agricultural infrastructure fund (b) Industrial infrastructure fund
(c) Export infrastructure fund (d) A section of Reserve Bank of India
13. What is the name of the Lander of Chandrayaan 3 ?
(a) Vikram (b) Ritu (c) Dhruv (d) Pragyaan
Series-A 2 LAP
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–
( )
1. ... ?
(a) (b)
(c) (d)
2. ‘’ / ?
(a) (b) (c) (d)
3. 1866 ‘ ’ ?
(a) (b) (c) (d)
4. , ?
(a) (b) (c) (d)
5. ‘’ ‘’ () ?
(a) (b) (c) (d)
6. ‘’ ?
(a) (b) (c) (d)
7.
(a) (b) (c) (d)
8. - ?
(a) (b) (c) (d)
9. ?
(a) 1931 (b) 2001 (c) 1871 (d) 2021
10. / :
(a) , , (b) , , (c) , , (d) , ,
11. 2011 ?
(a) 960 (b) 965 (c) 962 (d) 963
12. ‘ (BHARAT)’
(a) (b)
(c) (d)
13. -3 ?
(a) (b) (c) (d)
LAP 3 Series-A
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14. In which article of the Indian Constitution it has been described that there shall be a Council
of Ministers with the Prime Minister as the head to aid and advice the President ?
(a) Article 74 (b) Article 75 (c) Article 77 (d) Article 78
15. Which one of the following amendments of the Constitution of India empowers the President
to send back any matter for the reconsideration of the Council of Ministers ?
(a) 39th (b) 40th (c) 42nd (d) 44th
16. At which one of the following places FIH men’s Hockey World Cup 2023 was organised ?
(a) Kolkata (b) Chandigarh (c) Bhubaneshwar (d) New Delhi
17. Tigmanshu Dhulia is associated with which one of the following ?
(a) Films (b) Sports (c) Social Work (d) Politics
18. Which department of State conducts the ‘Mukhyamantri Hunar Yojana’ ?
(a) Women Welfare Department (b) Social Welfare Department
(c) Minority Welfare Department (d) Revenue Department
19. Find odd one out :
(a) 315 (b) 325 (c) 711 (d) 423
20. Kilogram is related to Quintal in the same way as Paisa is related to :
(a) Rupee (b) Coin (c) Wealth (d) Money
21. A number consists of two digits whose sum is 11. If 27 is added to the number, then the
digits change their places. What is the number ?
(a) 47 (b) 65 (c) 83 (d) 92
22. The autotrophic mode of nutrition requires
(a) Carbon dioxide and water (b) Chlorophyll
(c) Sunlight (d) All of the above
23. Food cans are coated with tin and not with zinc because
(a) Zinc is less reactive than tin.
(b) Zinc has a higher melting point than tin.
(c) Zinc is more reactive than tin.
(d) Zinc is costlier than tin.
24. No matter how far you stand from mirror, your image appears erect, the mirror is likely to
be
(a) only plane (b) only concave
(c) only convex (d) either plane or convex
25. Disguised unemployment means :
(a) Large number of unemployed people.
(b) Non-availability of alternative employment.
(c) Decrease in the productivity of the workers.
(d) Zero marginal productivity of labours.
Series-A 4 LAP
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14.
, , ?
(a) 74 (b) 75 (c) 77 (d) 78
15.
?
(a) 39 (b) 40 (c) 42 (d) 44
16. ... 2023 ?
(a) (b) (c) (d)
17. ?
(a) (b) (c) (d)
18. ‘ ’ ?
(a) (b)
(c) (d)
19. :
(a) 315 (b) 325 (c) 711 (d) 423
20.
(a) (b) (c) (d)
21. , 11 27
?
(a) 47 (b) 65 (c) 83 (d) 92
22.
(a) (b)
(c) (d)
23. ,
(a)
(b)
(c)
(d)
24. ,
(a) (b)
(c) (d)
25.
(a) (b)
(c) (d)
LAP 5 Series-A
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SECTION – B
(Subject Related Knowledge)
26. The viscosity of gases increases with
(a) increase in temperature (b) decrease in temperature
(c) increase in volume (d) increase in area
27. The dipole moment of current loop does not depend upon
(a) current in the loop (b) area of the loop
(c) number of turns in the loop (d) shape of the loop
28. Two inductors each of inductance L are connected in series and are quite far off each other.
The net inductance of the coil is
(a) L/4 (b) L/2 (c) L (d) 2L
29. What is the moment of inertia of a thin rod about an axis passing through the centre and
perpendicular to its axis ? Given that mass of rod is 1 kg, length 10 cm.
(a) 0.00083 kg m2 (b) 0.0833 kg m2 (c) 0.0033 kg m2 (d) 0.00033 kg m2
30. If the magnetic moment of the atoms of a substance is zero, the substance is
(a) Diamagnetic (b) Paramagnetic (c) Ferromagnetic (d) Antiferromagnetic
31. Given that P = 12, Q = 5, and R = 13, also P + Q = R , then the angle between P and Q will be -
(a) (b) /2 (c) zero (d) /4
32. Which one of the following is Kepler’s law of time-period ? If T is time-period and a is
semi-major axis of elliptical path ?
(a) T2 a3 (b) T3 a2 (c) T a2 (d) T2 a2
33. Stoke’s law states that the viscous drag force F on a sphere of radius r moving with velocity
through a fluid of viscosity is –
(a) F = 6 r / (b) F = 6 / r (c) F = 6 r / (d) F = 6 r
34. Two capillary tubes of different diameters are dipped in water. The level of water is
(a) the same in both tubes (b) greater in the tube of bigger diameter
(c) greater in the tube of smaller diameter (d) first increases then decreases
Series-A 6 LAP
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–
( )
26.
(a) (b) (c) (d)
27.
(a) (b)
(c) (d)
28. L
(a) L/4 (b) L/2 (c) L (d) 2L
29. ?
1 .., 10
(a) 0.00083 .2 (b) 0.0833 .2
(c) 0.0033 .2 (d) 0.00033 .2
30. ,
(a) (b) (c) (d) -
31. P = 12, Q = 5 R = 13 P + Q = R P Q
(a) (b) /2 (c) (d) /4
32. ? T a
-
(a) T2 a3 (b) T3 a2 (c) T a2 (d) T2 a2
33. r ,
F
(a) F = 6 r / (b) F = 6 / r (c) F = 6 r / (d) F = 6 r
34.
(a) (b)
(c) (d)
LAP 7 Series-A
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35. A transistor is operated in common base configuration, the output and input signal have a
phase difference of
(a) 0° (b) 45° (c) 90° (d) 180°
36. Two pieces, one of Cu (Copper) and other of Ge (Germanium) are both cooled from room
temperature to 100° K. The resistance of
(a) Ge increases and of Cu decreases (b) Ge decreases and of Cu increases
(c) each of them increases (d) each of them decreases
37. Thevenin’s theorem replaces a complicated circuit having a load by an _______.
(a) Ideal voltage source and parallel resistance.
(b) Ideal current source and parallel resistance.
(c) Ideal current source and series resistance.
(d) Ideal voltage source and series resistance.
38. According to maximum power transfer theorem, the maximum efficiency at the condition
of maximum power transfer is –
(a) 50% (b) 25% (c) 75% (d) 90%
39. The number of nearest neighbour atoms in a unit cell of body centred cubic crystal system
is
(a) 4 (b) 6 (c) 8 (d) 12
40. For a transistor, = 80 and base current IB = 40 A. The value of emitter current IE for this
transistor will be
(a) 3.16 mA (b) 3.20 mA (c) 32.4 mA (d) 3.24 mA
41. Packing fraction of atoms in a body centred cubic unit cell is
2 3
(a) π (b) π (c) (d)
6 8 6 8
42. The efficiency of a half wave rectifier cannot be higher than
(a) 46.4% (b) 64.4% (c) 40.6% (d) 81.2%
If r = x^i + y^j + zk^ and r = | r |, the divergence of vector A = rn r is
43.
(a) (n + 1) rn–1 (b) 3n rn–1 (c) (3n + 1) rn (d) (nr + 3) rn/2
Series-A 8 LAP
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44. The stability factor S of a transistor amplifier at constant and IB is equal to –
(Where terms have their usual meaning)
dIc
(a) Ic × Ico (b) Ic / Ico (c) Ic + Ico (d) dI
co
45. The slope of ‘d.c. load line’ of a transistor amplifier is equal to _______.
(If RC is the d.c. load of the circuit)
1 1
(a) – RC (b) – R (c) RC (d) R
C C
46. The correct relationship between the relativistic momentum (p) and relativistic energy (E)
of a particle of rest mass mo is given by the equation
(a) E = p2c2 + mo2c2 (b) E2 = p2c2 + mo2c4
(c) E = p2c2 – mo2c4 (d) E2 = p2c2 – mo2c2
47. The proper length of each edge of a cube is Lo. It is moving with velocity along one of its
edges. What will be the relativistic volume of the cube ?
(a) Lo3 / 1 – 2/c2 (b) Lo3 1 – /c (c) Lo3 1 + 2/c2 (d) Lo3 1 – 2/c2
48. The relation between three electric vectors E, D and P is
(a) D = P + E (b) D = P / E (c) D = 0 E + P (d) D = 0( E + P)
49. Total energy E of the electron in a hydrogen atom is :
e2 e e2 e
(a) E = (b) E = (c) E = – (d) E = –
0 r 0 r 0 r 0 r
The half-life of 92 U undergoing -decay is 4.5 × 109 years. What is the activity of 1.0 g
238
50.
238
sample of 92 U ?
(a) 1.23 × 102 Bq (b) 1.23 × 104 Bq (c) 1.23 × 106 Bq (d) 1.23 × 108 Bq
51. _______ is a fixed frequency oscillator.
(a) Phase shift oscillator (b) Crystal oscillator
(c) Hartley oscillator (d) Colpitt’s oscillator
Series-A 10 LAP
Text of page 11
44. IB , S (
)
dIc
(a) Ic × Ico (b) Ic / Ico (c) Ic + Ico (d) dI
co
45. ‘ ’ ( RC
)
1 1
(a) – RC (b) – R (c) RC (d) R
C C
46. mo (p) (E)
(a) E = p2c2 + mo2c2 (b) E2 = p2c2 + mo2c4
(c) E = p2c2 – mo2c4 (d) E2 = p2c2 – mo2c2
47. Lo
?
(a) Lo3 / 1 – 2/c2 (b) Lo3 1 – /c (c) Lo3 1 + 2/c2 (d) Lo3 1 – 2/c2
48. E, D P
(a) D = P + E (b) D = P / E (c) D = 0 E + P (d) D = 0( E + P)
49. E
e2 e e2 e
(a) E = (b) E = (c) E = – (d) E = –
0 r 0 r 0 r 0 r
92 U - - 4.5 × 10 92 U 1.0
238 238
50. 9
?
(a) 1.23 × 102 (b) 1.23 × 104
(c) 1.23 × 106 (d) 1.23 × 108
51. _____
(a) (b)
(c) (d)
LAP 11 Series-A
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52. Find the 10’s complement of the 428 decimal number.
(a) 472 (b) 572 (c) 752 (d) 257
53. Calculate the spectrum line width for 6328 Å wavelength of He-Ne laser operating at
300 K, given that mass of neon atom = 20 × 1.66 × 10–27 kg.
(a) 1000 MHz (b) 1200 MHz (c) 1300 MHz (d) 1100 MHz
54. In Zeeman transition, the g value for 3D2 level is –
(a) 7/6 (b) 6/7 (c) 1/6 (d) 1/7
55. Convert 10111001102 binary number to octal.
(a) 13648 (b) 14368 (c) 16348 (d) 13468
56. Apply De Morgan’s theorem and solve (A B) C D
(a) (A + B) CD (b) ( A + B) + CD (c) ( A + B) CD (d) (A + B ) CD
57. Develop the output expression ‘X’ for the circuit :
(a) X = ( A B + C) ( D E + F) (b) X = ( A B + C) (DE + F)
(c) X = (AB + C) ( D E + F) (d) X = ( A B + C) ( D E + F)
58. Two sources are coherent, if
(a) their amplitudes are equal.
(b) phase difference between them is constant with time.
(c) their wavelengths are equal.
(d) their energies are equal.
59. The wavelength of emission is 6000 Å and the life time sp is 10–6 s. Determine the
coefficient for the stimulated emission.
(a) 1.3 × 1012 m/kg (b) 1.3 × 1019 m/kg (c) 1.3 × 1015 m/kg (d) 1.3 × 1017 m/kg
Series-A 12 LAP
Text of page 14
60. A 15 cm long tube containing cane sugar solution (specific rotation 66°) shows optical
rotation 7°. The strength of the solution will be –
(a) 0.71 gm/ml (b) 0.071 gm/ml (c) 0.0071 gm/ml (d) 7.1 gm/ml
61. The minimum thickness of a quarter wave plate of calcite for = 5460 Å (given principal
indices of calcite are 1.652 and 1.48) will be -
(a) 7.32 × 10–8 m (b) 8.32 × 10–8 m (c) 8.32 × 10–7 m (d) 7.32 × 10–7 m
62. First law of thermodynamics is related to
(a) Conservation of energy (b) Conservation of mass
(c) Conservation of momentum (d) Conservation of heat
63. Gibbs function is given by
(a) G = U + PV + TS (b) G = U – PV + TS
(c) G = U + PV – TS (d) G = U – PV – TS
64. Clausius-Clapeyron equation is :
V2 V1
dP L dP 1 2a
(a) (b) b
dT T dT C P RT
dP L dP T
dT T V2 V1 dT L V2 V1
(c) (d)
65. The unit of entropy is –
(a) Joule / Kelvin (b) Cal. / Kelvin (c) Both (a) and (b) (d) Ergs / meter
66. Excess Pressure (P) inside a soap bubble is, (where T is its surface tension and R is radius)
4T 2T T
(a) P = R (b) P = R (c) P = R (d) Zero
67. Double refractive crystals are negative, where e and o are velocities of extraordinary and
ordinary rays respectively, if
(a) e > o (b) o> e (c) o= e (d) o= 2e
Series-A 14 LAP
Text of page 16
68. The efficiency of a Carnot engine working between 727 °C and 127 °C temperature is
(a) 80% (b) 60% (c) 30% (d) 50%
69. If the ratio of adiabatic and isothermal elasticities is ES/ET, then which of the following is
true ?
(a) ES/ET = CP/CV (b) ES/ET = CV/CP (c) ET/ES = (CP/CV)2 (d) ES/ET = CP . CV
70. The ratio between d100 : d110 : d111 interplanar spacing of KCl crystal is –
1 1 1 1 1 1
(a) 1 : 2 : 3 (b) 1 : : (c) 1 : : (d) : :1
3 2 2 3 3 2
71. The radius of the 10th zone in zone plate of focal length 20 cm for light of wavelength 5000
Å will be -
(a) 0.1 m (b) 0.01 m (c) 0.001 m (d) 0.2 m
72. A partially polarized light beam is passed through a Nicol. In 90° rotation of Nicol, the
intensity changes from Im to 0.3 Im. The degree of polarization will be :
(a) 54 (b) 5.4 (c) 0.54 (d) 0.054
73. If yellow light in the double slit experiment, is replaced by red light, the fringe width will
(a) increase (b) decrease
(c) remain unaffected (d) sometime increases, sometime decreases
74. Optic axis in crystal is the direction in which
(a) velocity of “O” rays is equal to velocity of “e” rays.
(b) velocity of “e” rays is greater than velocity of “O” rays.
(c) velocity of “O” rays is greater than velocity of “e” rays.
(d) velocity of “O” rays is zero and velocity of “e” rays is finite.
75. Which of the following is a coherent source ?
(a) Sodium lamp (b) Mercury lamp (c) Laser (d) Filament lamp
76. The quantum of energy in lattice vibration is
(a) Photon (b) Magneton (c) Phonon (d) Graviton
Series-A 16 LAP
Text of page 17
68. 727 °C 127 °C
(a) 80% (b) 60% (c) 30% (d) 50%
69. ES/ET , ?
(a) ES/ET = CP/CV (b) ES/ET = CV/CP (c) ET/ES = (CP/CV)2 (d) ES/ET = CP . CV
70. KCl d100 : d110 : d111
1 1 1 1 1 1
(a) 1 : 2 : 3 (b) 1 : : (c) 1 : : (d) : :1
3 2 2 3 3 2
71. 20 5000 Å
(a) 0.1 . (b) 0.01 . (c) 0.001 . (d) 0.2 .
72. 90 Im
0.3 Im :
(a) 54 (b) 5.4 (c) 0.54 (d) 0.054
73.
(a) (b)
(c) (d) ,
74.
(a) “O” “e”
(b) “e” “O”
(c) “O” “e”
(d) “O” “e”
75. ?
(a) (b) (c) (d)
76.
(a) (b) (c) (d)
LAP 17 Series-A
Text of page 18
77. Which of the following represents a Universal Gate ?
(a) NAND Gate (b) OR Gate (c) AND Gate (d) NOT Gate
78. Convert 37.128 octal number to binary number.
(a) 010011.0011012 (b) 010011.0010102
(c) 011111.0010102 (d) 011111.0010112
79. Add the hexadecimal numbers : 2B16 + 8416
(a) AB16 (b) AF16 (c) AC16 (d) AD16
80. Truth table is for :
A B
0 0 0
0 1 1
1 0 1
1 1 0
(a) OR Gate (b) NAND Gate
(c) Exclusive OR Gate (d) Exclusive AND Gate
81. The minimum value of charge on any charged body may be
(a) 1.6 × 10–19 Coulomb (b) 1 Coulomb
(c) 1 Coulomb (d) 4.8 × 10–12 Coulomb
82. An electric field can deflect :
(a) X-rays (b) Neutrons (c) -particles (d) -rays
83. What is the value of Hr ? Where Hr is the wavelength of third line of Balmer series in
emission spectrum of hydrogen ?
(a) 434.1 nm (b) 486.1 nm (c) 656.3 nm (d) 436.1 nm
84. Relation between angular momentum L and moment of Inertia I is
(a) L = I (b) L = I / (c) L = I 2 (d) L = I2
Series-A 18 LAP
Text of page 19
77. ?
(a) NAND (b) OR (c) AND (d) NOT
78. 37.128
(a) 010011.0011012 (b) 010011.0010102
(c) 011111.0010102 (d) 011111.0010112
79. : 2B16 + 8416
(a) AB16 (b) AF16 (c) AC16 (d) AD16
80.
A B
0 0 0
0 1 1
1 0 1
1 1 0
(a) OR (b) NAND
(c) Exclusive – OR (d) Exclusive AND
81.
(a) 1.6 × 10–19 (b) 1
(c) 1 (d) 4.8 × 10–12
82. :
(a) X- (b) (c) - (d)
83. Hr ? Hr
(a) 434.1 nm (b) 486.1 nm (c) 656.3 nm (d) 436.1 nm
84. L I :
(a) L = I (b) L = I / (c) L = I 2 (d) L = I2
LAP 19 Series-A
Text of page 20
85. The Zeeman pattern of a line consists of 6 equidistant components. The upper state term is
known to be 2P3/2. What is the lower state term ?
(a) 3S1 (b) 3S1/2 (c) 2S1/2 (d) 2S1
86. What is the value of g for sd configuration in J-J coupling for J = 1 ?
(a) 0 (b) 1 (c) 2 (d) ½
87. An ideal current source has internal resistance
(a) Infinite (b) Zero (c) Small, but not zero (d) Medium
88. The collector leakage current in a transistor is 300 A in CE configuration. Now, if the
transistor is connected in CB arrangement, what will be the leakage current ?
(a) 24 A (b) 2.4 A (c) 2.4 mA (d) 24 mA
89. In a Hartley’s oscillator, feedback voltage is across coil L2 and output voltage is across L1.
What will be the feedback fraction ?
(a) L2 × L1 (b) L2 + L1 (c) L2 – L1 (d) L2 / L1
90. Temperature of inversion for a real gas is :
2a 2a 2a
(a) 0 (b) Ti = RTb (c) Ti = Rb (d) Ti = Rb – T
91. Entropy of a substance tends to zero at :
(a) 0° K (b) 0° C (c) 0° F (d) 100° C
92. For a substance, triple point can be
(a) Only one (b) Three (c) Infinite (d) Two
93. 1 Curie =
(a) 3.7 × 108 Bq (b) 3.7 × 1012 Bq (c) 3.7 × 1010 Bq (d) 3.7 × 1014 Bq
Series-A 20 LAP
Text of page 22
94. The random motion of holes and free electrons in a semiconductor due to thermal agitation
is related to
(a) Diffusion (b) Drift due to the electric field
(c) Ionisation (d) Crystallisation
95. In case of a reverse bias applied to a P-N junction diode, mark the statement that is incorrect:
(a) The +ve terminal of the battery is connected to n-type and –ve terminal to p-type crystal.
(b) The effect of the reverse bias is to decrease the potential barrier.
(c) The junction has very high resistance.
(d) The reverse bias causes the holes in p-region and electrons in n-region to move away
from the junction.
96. The mutual inductance of two coils is maximum when the coils are
(a) inclined at angle of 45 (b) at right angle to each other
(c) facing each other (d) touching each other
B
97. For a circular loop of constant surface area, the Faraday law gives E . The electric
t
field in this case is
(a) conservative (b) non-conservative (c) equal to V (d) Zero
98. Which one of the following is not a Maxwell equation ?
B D
(a) D (b) E (c) H J (d) J
t t t
99. The force between two electrons separated by a distance r varies as
(a) r2 (b) r (c) r–1 (d) r–2
100. The knee voltage of a crystal diode is approximately of the order of
(a) Applied Voltage (b) Breakdown Voltage
(c) Barrier Potential (d) Forward Voltage
________________
Series-A 22 LAP
Text of page 23
94.
(a) (b)
(c) (d)
95. P-N , ,
(a) n-type p-type
(b)
(c)
(d) p- n-
96. ,
(a) 45 (b)
(c) - (d)
B
97. E
t
(a) (b) (c) V (d)
98. ?
B D
(a) D (b) E (c) H J (d) J
t t t
99. r
(a) r2 (b) r (c) r–1 (d) r–2
100.
(a) (b) (c) (d)
________________
LAP 23 Series-A
Text of page 24
Space For Rough Work / Series-A 24 LAP
Page 1 of 24
Source: Uttarakhand Public Service Commission. Question paper published by Uttarakhand Public Service Commission.