Andaman Nicobar Group C 2023: Dr. B.R. Ambedkar Institute of Technology, Lab Technician (Science), CBT, Paper 2

1.
A bullet is fired with a speed of 500 m/s in order to hit a target 5 m away. If g =
10 m/s², the gun should be aimed

(A)
directly toward the target
(B)
0.06 cm above the target
(C)
0.05 cm above the target
(D)
0.01 cm above the target
Answer: “0.05 cm above the target”

2.
1 Newton = _____________

(A)
1 Newton = 1 kg x 1 m/s2
(B)
1 Newton = 1 kg
(C)
1 Newton = 1 kg x 1 m/s
(D)
1 Newton = m/s2
Answer: “1 Newton = 1 kg x 1 m/s2 “

3.
What is the formula to find linear velocity?

(A)
Linear velocity = 2(Mass + Velocity)
(B)
Linear velocity = Mass / Velocity
(C)
Linear velocity = Mass * Velocity
(D)
Linear velocity = Mass – Velocity
Answer: “Linear velocity = Mass * Velocity”

4.
Which is the branch of physics that deals with the mo on of a body by
considering the cause?

(A)
Sta cs
(B)
Thermodynamics
(C)
Dynamics
(D)
Astronomy
Answer: “Dynamics”

5.
The work done by a body is 50 kJ, which it a ains while reaching a height of 5
m. By what difference has the energy of the body changed?

(A)
50 kJ
(B)
-50 kJ
(C)
25 kJ
(D)
10 kJ
Answer: “50 kJ”

6.
Power is expressed as

(A)
P = dW/dt
(B)
P=F*d
(C)
P=E
(D)
P = dE/dt
Answer: “P = dW/d”

7.
The energy possessed by a body due its posi on is

(A)
Kine c Energy
(B)
Poten al Energy
(C)
Total Energy
(D)
Posi on Energy
Answer: “Poten al Energy”

8.
Energy involved in crea ng work _____

(A)
Gets used up
(B)
Gets transferred
(C)
Gets exhausted
(D)
Gets lost
Answer: “Gets transferred”

9.
How fast would a 1 kg bowling ball travel if it had the same kine c energy as
that of the elephant provided the mass of the elephant is 6000 kg and velocity
given is 10 m/s?

(A)
1000 m/s
(B)
775 m/s
(C)
625 m/s
(D)
820 m/s

Answer: “775 m/s”

10.
Which among the following liquids, is the good conductor of Heat?

(A)
Water
(B)
Mercury
(C)
Ether
(D)
Alcohol
Answer: “Mercury”

11.
Changing from Solid state to the gaseous state is known as:

(A)
Vapouriza on
(B)
Crystalliza on
(C)
Fusion
(D)
Sublima on
Answer: “Sublima on”


12.
A par cle execu ng simple harmonic mo on of amplitude 5cm has a maximum
speed of 31.4 cm/s. The frequency of its oscilla on is?

(A)
4Hz
(B)
3Hz
(C)
2Hz
(D)

1Hz
Answer: “1Hz”

13.
The phase difference between the accelera on of a par cle execu ng simple
harmonic mo on and the instantaneous velocity is?

(A)
π
(B)
0.707π
(C)
Zero
(D)
0.5π
Answer: “Zero”

14.
An ideal gas passes from one equilibrium state (P1, V1, T1, N) to another
equilibrium state (2P1, 3V1, T2, N). Then

(A)
T1=T2
(B)
T1=T2/6
(C)
T1=6T2
(D)
T1=3T2
Answer: “T1 = T2 / 6”
15.

The dimension of pressure is
(A)
MLT
(B)
ML-1T-1
(C)
ML-1T-2
(D)

ML-2T-2
Answer: “ML-1T-2”

16.
Normal human body temperature 98.6°F corresponds to

(A)
37°C
(B)
42°C
(C)
55°C
(D)
410°C
Answer: “37°C”

17.
Three equal resistors connected in series with a source of emf together
dissipate 10 W of power each. What will be the power dissipated if the same
resistors are connected in parallel across the same source of emf?

(A)
40 W
(B)
90W
(C)
100W
(D)
120W
Answer: “90W”

18.
Thermocouples convert

(A)
Heat energy into electrical energy
(B)
Heat energy into light energy
(C)

Heat energy into mechanical energy
(D)
Mechanical energy into heat energy
Answer: “Heat energy into electrical energy”

19.
How much heat does a 40 W bulb generates in one hour?

(A)
144000J
(B)
144J
(C)
1.44J
(D)
14J
Answer: “144000J”

20.
If 1 ampere current flows through 2m long conductor the charge flow through
it in 1 hour will be

(A)
3600C
(B)
7200C
(C)
1C
(D)
2C
Answer: “3600C”

21.
A closed surface contains two equal and opposite charges. The net electric flux
from the surface will be

(A)
Nega ve
(B)

Posi ve
(C)
Zero
(D)
Data is insufficient
Answer: “Zero”

22.
Two similar charges each of one coulomb placed in the air one meter apart
repel each other with a force
(A)
9 x 109N
(B)
9.2 x 104N
(C)
9 x 109N
(D)
9 x 107N
Answer: “9 x 109N”

23.
When an electron beam is moving in a magne c field, then the work done is
equal to the

(A)
charge of electron
(B)
magne c field
(C)
product of electronic charge and the magne c field
(D)
zero
Answer: “zero”

24.
The phenomenon of electromagne c induc on was first studied by

(A)
Orested
(B)

Ohm
(C)
Michael Faraday
(D)
Einstein
Answer: “Michael Faraday”

25.
Electric generator works on the principle of

(A)
Magne sm
(B)
Electromagne c induc on
(C)
Right hand thumb rule
(D)
Fleming’s le -hand rule
Answer: “electromagne c induc on”

26.
The resis vity of a pure silicon is about ……………

(A)
100 Ω cm
(B)
6000 Ω cm
(C)
3 x 105 Ω m
(D)
6 x 10-8 Ω cm
Answer: “zero”

27.
The impurity level in an extrinsic semiconductor is about ….. of pure
semiconductor.

(A)
10 atoms for 108 atoms
(B)

1 atom for 108 atoms
(C)
1 atom for 104 atoms
(D)
1 atom for 100 atoms
Answer: “1 atom for 108 atoms”

28.
Which of the following is a semi-conductor

(A)
Diamond
(B)
Arsenic
(C)
Phosphorous
(D)
Gallium arsenide
Answer: “Gallium arsenide”

29.
The work func on of lithium is 2.5 eV. The maximum wavelength of light that
can cause the photoelectric effect in lithium is ______________

(A)
3980 Å
(B)
4980 Å
(C)
5980 Å
(D)
6980 Å
Answer: “4980 Å”

30.
The magnifying power of an astronomical telescope in normal adjustment is
100. The distance between the objec ve and the eyepiece is 101 cm. The focal
length of the objec ves and eyepiece is

(A)

10 cm and 1 cm respec vely
(B)
100 cm and 1 cm respec vely
(C)
1 cm and 100 cm respec vely
(D)
1 cm and 10 cm respec vely
Answer: “100 cm and 1 cm respec vely”

31.
The period in the current periodic table denotes the value of the following
quan es:

(A)
Atomic Number
(B)
Atomic Mass
(C)
Principal Quantum Number
(D)
Azimuthal Quantum Number
Answer: “Principal Quantum Number”

32.
The ca on's ionic radius is always __________

(A)
a smaller radius than the radius of its atom
(B)
the atomic radius plus
(C)
equal to the atomic radius
(D)
Impossible to an cipate
Answer: “a smaller radius than the radius of its atom”

33.
Which of the following oxides has the characteris cs of an amphoteric?

(A)

SnO2
(B)
CO2
(C)
SiO2
(D)
CaO
Answer: “SnO2 “

34.
The element next to F on Pauling's electronega vity scale is

(A)
N
(B)
Cl
(C)
O
(D)
Ne
Answer: “O”

35.
Out of the following molecules, which one has trigonal planar geometry?
(A)
NH3
(B)
BF3
(C)
PCl3
(D)
IF3
Answer: “BF3”

36.
Sp3d2 hybridiza on is present in [Co(NH3)63+], Find its geometry.

(A)
tetrahedral geometry
(B)

square planar geometry
(C)
tetragonal geometry
(D)
octahedral geometry
Answer: “octahedral geometry”

37.
The most polar bond is
(A)
C–F
(B)
C–S
(C)
C – Br
(D)
C–O
Answer: “C – F”

38.
Which of the following substance has a dipole moment more than zero?

(A)
Methane
(B)
Water
(C)
Carbon dioxide
(D)
Nitrogen
Answer: “Water”

39.
Molten NaCl conducts electricity due to the presence of

(A)
Free Electrons
(B)
Free molecules
(C)

Free ions
(D)
Atoms of Na and Cl
Answer: “Free ions”

40.
In a galvanic cell

(A)
Chemical energy is converted into electricity
(B)
Chemical energy is converted into heat
(C)
Electrical energy is converted into chemical energy
(D)
Electrical energy is converted into heat
Answer: “Chemical energy is converted into electricity”

41.
Stronger the oxidizing agent greater is the

(A)
Oxida on poten al
(B)
Reduc on poten al
(C)
Redox poten al
(D)
Emf of the cell
Answer: “Reduc on poten al”

42.
Which has a maximum oxida on number?

(A)
N
(B)
Cr
(C)

S
(D)
Mn
Answer: “Mn”

43.
Which of the following cell is not rechargeable?

(A)
Lead storage ba ery
(B)
Silver oxide cell
(C)
Fuel cell
(D)
Ni-Cd cell
Answer: “Silver oxide cell”

44.
The non-metal which is liquid at room temperature is:

(A)
Mercury
(B)
Bromine
(C)
Carbon
(D)
Helium
Answer: “Bromine”

45.
The sulphide ores are converted into oxides by hea ng strongly in the presence
of excess air. This process is known as

(A)
Roas ng
(B)
Smel ng
(C)

Calcina on
(D)
Refining
Answer: “Roas ng”

46.
In electroly c refining, the cathode is made up of

(A)
Pure metal
(B)
Impure metal
(C)
Alloy
(D)
Metallic salt
Answer: “Pure metal”

47.
What is camphor in N2 gas an example of?

(A)
Solid in liquid solu on
(B)
Liquid in gas solu on
(C)
Solid in gas solu on
(D)
Gas in gas solu on
Answer: “Solid in gas solu on”

48.
What type of solu on is Cranberry glass?

(A)
Emulsion
(B)
Solid sol
(C)

Solid aerosol
(D)
Gel
Answer: “Solid sol”

49.
What is the unit in which atmospheric pollu on is measured?

(A)
Volume frac on
(B)
ppm
(C)
Mass percentage
(D)
Volume percentage
Answer: “ppm”

50.
Cellulose acetate is a

(A)
Natural polymer
(B)
Semisynthe c polymer
(C)
Synthe c polymer
(D)
Plas ciser
Answer: “Semisynthe c polymer”


51.
Which of the following is fully fluorinated polymer ?

(A)
Teflon
(B)
Neoprene
(C)

PVC
(D)
Thiokol
Answer: “Teflon”

52.
Nylon-6 is made from

(A)
Butadiene
(B)
Chloroprene
(C)
Adipic acid
(D)
Caprolactam
Answer: “Caprolactam”

53.
Which of the following polymer has ester linkage?

(A)
Nylon-66
(B)
PVC
(C)
Terylene
(D)
SBR
Answer: “Terylene”

54.
Pentane and 2-methyl butane have the same

(A)
Boiling point
(B)
Mel ng point
(C)

Percentage composi on
(D)
Structural formula
Answer: “Percentage composi on”

55.
The first organic compound was synthesized in laboratory by

(A)
Wohler
(B)
Kolbe
(C)
Berzelius
(D)
Berthelot
Answer: “Wohler”

56.
Geometric isomerism is usually found in

(A)
Alkanes
(B)
Alkenes
(C)
Alkynes
(D)
Esters
Answer: “Alkynes”

57.
Main source of organic compounds is

(A)
Animal
(B)
Fossil
(C)

Coal
(D)
Plants
Answer: “Animal”
58.
How many milliliters of 0.5 M H2SO4 are needed to dissolve 0.5 g of copper (II)
carbonate?
(A)
6.01
(B)
4.5
(C)
8.1
(D)
11.1
Answer: “8.1”

59.
Name the tendency of an electrode to lose electrons.

(A)
Electrode Poten al
(B)
Reduc on Poten al
(C)
Oxida on Poten al
(D)
E.M.F.
Answer: “Oxida on Poten al”

60.
The oxida on number of Cl in Cl2O7 is:

(A)
+7
(B)
+5
(C)
+3
(D)

–7
Answer: “+ 7”