b
Mock Test
Mock Test
Chemical Bonding
1. Which type of bond is formed by the transfer of electrons?
A) Ionic bond
B) Covalent bond
C) Metallic bond
D) Hydrogen bond
E) Van der Waals bond
2. Which of the following molecules has a triple bond?
A) O₂
B) N₂
C) H₂
D) CO₂
E) NH₃
3. What type of hybridization is present in methane (CH₄)?
A) sp
B) sp²
C) sp³
D) dsp²
E) d²sp³
4. Which molecule has the highest dipole moment?
A) H₂O
B) CO₂
C) NH₃
D) CH₄
E) HF
5. Which of the following has a planar structure?
A) CH₄
B) NH₃
C) BF₃
D) SF₆
E) Xef4
Thermodynamics
1. What is the first law of thermodynamics?
A) Energy cannot be created or destroyed
B) Entropy always increases
C) For every action, there is an equal and opposite reaction
D) Matter cannot be created or destroyed
E) The speed of light is constant
2. In an isothermal process, the temperature of the system:
A) Increases
B) Decreases
C) Remains constant
D) Fluctuates
E) Is unpredictable
3. What is the efficiency of a Carnot engine operating between 500 K and 300 K?
A) 40%
B) 60%
C) 50%
D) 30%
E) 20%
4. The unit of entropy is:
A) Joules
B) Joules per Kelvin
C) Kelvin
D) Newton
E) Pascal
5. In an adiabatic process, the:
A) Pressure remains constant
B) Volume remains constant
C) Temperature remains constant
D) Heat is constant
E) No heat is exchanged
Conic Sections
1. The equation of a circle is:
A) \( x^2 + y^2 = r^2 \)
B) \( x^2 - y^2 = r^2 \)
C) \( x^2 + y^2 = 2r \)
D) \( x + y = r \)
E) \( x^2 = y^2 \)
2. The equation of a parabola is given by:
A) \( y = ax^2 + bx + c \)
B) \( y = ax + b \)
C) \( x^2 + y^2 = r^2 \)
D) \( x = ay^2 + by + c \)
E) \( x^2 - y^2 = 1 \)
3. The eccentricity of a hyperbola is:
A) Less than 1
B) Equal to 1
C) Greater than 1
D) Equal to 0
E) Undefined
4. A point on a conic section equidistant from the focus and the directrix is:
A) Center
B) Vertex
C) Axis
D) Foci
E) Directrix
5. The latus rectum of a parabola is:
A) The line passing through the focus
B) The distance between the vertex and the directrix
C) The line parallel to the directrix
D) The focal distance from the vertex
E) The chord passing through the focus and perpendicular to the axis
Electromagnetic Induction (EMI)
1. Who discovered electromagnetic induction?
A) James Clerk Maxwell
B) Michael Faraday
C) Heinrich Hertz
D) Nikola Tesla
E) Thomas Edison
2. The unit of magnetic flux is:
A) Weber
B) Tesla
C) Henry
D) Coulomb
E) Farad
3. Lenz's law is a consequence of the law of:
A) Conservation of energy
B) Conservation of momentum
C) Conservation of charge
D) Conservation of mass
E) Conservation of angular momentum
4. The self-inductance of a coil is given by the formula:
A) L = NΦ/I
B) L = N²Î¦/I
C) L = NI/Φ
D) L = Φ/I
E) L = N/IΦ
5. In a transformer, the mutual inductance between the primary and secondary coils depends on:
A) The number of turns in the primary coil
B) The number of turns in the secondary coil
C) The core material
D) Both A and B
E) All of the above
Alternating Current
1. The root mean square (RMS) value of an AC current is:
A) Peak value
B) Peak value divided by √2
C) Average value
D) Average value divided by √2
E) None of the above
2. In an AC circuit, the phase difference between current and voltage is π/2 when the circuit is:
A) Purely resistive
B) Purely inductive
C) Purely capacitive
D) Both A and B
E) Both B and C
3. The power factor of an AC circuit is defined as:
A) The ratio of average power to apparent power
B) The ratio of apparent power to average power
C) The ratio of average power to peak power
D) The ratio of peak power to average power
E) The ratio of RMS current to peak current
4. In a series RLC circuit, resonance occurs when:
A) The inductive reactance equals the capacitive reactance
B) The inductive reactance is zero
C) The capacitive reactance is zero
D) The resistance is zero
E) None of the above
5. The frequency of an AC supply in most household circuits is:
A) 50 Hz
B) 60 Hz
C) 100 Hz
D) Both A and B
E) None of the above
Electromagnetic Waves
1. Electromagnetic waves are:
A) Longitudinal waves
B) Transverse waves
C) Both longitudinal and transverse
D) Neither longitudinal nor transverse
E) Electromechanical waves
2. The speed of electromagnetic waves in vacuum is:
A) 3 × 10^8 m/s
B) 3 × 10^6 m/s
C) 3 × 10^5 m/s
D) 3 × 10^3 m/s
E) None of the above
3. Which of the following is not an electromagnetic wave?
A) Radio wave
B) Sound wave
C) Microwave
D) Infrared
E) X-ray
4. The range of wavelengths for visible light is approximately:
A) 400-700 nm
B) 700-1000 nm
C) 100-400 nm
D) 1-10 nm
E) 10-100 nm
5. Which of the following electromagnetic waves has the highest frequency?
A) Radio waves
B) Microwaves
C) Infrared
D) X-rays
E) Gamma rays
Modern Physics
1. Who proposed the theory of relativity?
A) Isaac Newton
B) Albert Einstein
C) Niels Bohr
D) James Clerk Maxwell
E) Werner Heisenberg
2. The photoelectric effect demonstrates:
A) The wave nature of light
B) The particle nature of light
C) The dual nature of light
D) The quantum nature of light
E) The relativistic nature of light
3. Planck's constant is used to describe the:
A) Energy of a photon
B) Wavelength of a photon
C) Speed of light
D) Frequency of a photon
E) Mass of a photon
4. In quantum mechanics, the Heisenberg uncertainty principle states that:
A) Position and momentum of a particle cannot both be precisely determined
B) Energy and time cannot both be precisely determined
C) Both A and B
D) The speed of light is constant
E) Mass and energy are equivalent
5. The phenomenon of electron diffraction supports the concept of:
A) The particle nature of electrons
B) The wave nature of electrons
C) The quantum nature of electrons
D) The relativistic nature of electrons
E) The classical nature of electrons
Nuclear Physics
1. The process of splitting a nucleus into two or more smaller nuclei is called:
A) Fusion
B) Fission
C) Radioactive decay
D) Ionization
E) Transmutation
2. Which particle is emitted during beta decay?
A) Proton
B) Neutron
C) Electron
D) Positron
E) Alpha particle
3. The half-life of a radioactive substance is:
A) The time taken for half the atoms to decay
B) The time taken for all the atoms to decay
C) The time taken for the activity to become zero
D) The time taken for the mass to be reduced by half
E) The time taken for the energy to be reduced by half
4. In nuclear reactors, the material used to slow down neutrons is called:
A) Moderator
B) Control rod
C) Coolant
D) Reflector
E) Shield
5. The energy released in a nuclear reaction is due to:
A) Kinetic energy of the particles
B) Potential energy of the particles
C) Mass defect
D) Binding energy
E) Both C and D
Thermodynamics
1. The first law of thermodynamics is a restatement of the:
A) Law of conservation of mass
B) Law of conservation of energy
C) Law of conservation of momentum
D) Law of conservation of charge
E) Law of conservation of angular momentum
2. Which of the following is a statement of the second law of thermodynamics?
A) Energy cannot be created or destroyed
B) The entropy of an isolated system always increases
C) For every action, there is an equal and opposite reaction
D) The total momentum of a closed system remains constant
E) The energy transferred as heat always moves from a warmer body to a cooler body
3. The Carnot engine is a theoretical device that operates on:
A) A real heat cycle
B) An irreversible cycle
C) A Carnot cycle
D) An adiabatic process
E) A Rankine cycle
4. Entropy is a measure of:
A) Energy
B) Temperature
C) Disorder
D) Heat
E) Work
5. In an isolated system, the total entropy:
A) Remains constant
B) Always decreases
C) Always increases
D) Can either increase or decrease
E) Is zero
Optics
1. The phenomenon of bending of light around the corners of an obstacle is called:
A) Reflection
B) Refraction
C) Diffraction
D) Interference
E) Polarization
2. The focal length of a convex lens is:
A) Positive
B) Negative
C) Zero
D) Infinity
E) None of the above
3. The splitting of white light into its constituent colors is known as:
A) Reflection
B) Refraction
C) Diffraction
D) Dispersion
E) Interference
4. In a concave mirror, if the object is placed between the focal point and the mirror, the image formed is:
A) Real and inverted
B) Virtual and upright
C) Real and upright
D) Virtual and inverted
E) No image is formed
5. The unit of the refractive index is:
A) Meter
B) Second
C) No unit
D) Hertz
E) Joule
