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1. Which of the following factors is the induced charge in an electromagnetic induction independent of?
a.Time
b.Resistance of the coil
c.Change of flux
d.None of the above
Answer: (a) Time
2. Which of the following states that an emf is induced whenever there is a change in the magnetic field linked with electric circuits?
a.Lenzβs Law
b.Ohmβs Law
c.Faradayβs Law of Electromagnetic Induction
d.None of the above
Answer: (c) Faradayβs Law of Electromagnetic Induction
3. Which of the following gives the polarity of the induced emf?
a.Biot-Savart Law
b.Lenzβs Law
c.Ampereβs circuital Law
d.Flemingβs right-hand Rule
Answer: (b) Lenzβs Law
4. Electrical Inertia is the measure of
a.Self Inductance
b.Mutual Inductance
c.Impedance
d.None of the above
Answer: (a) Self Inductance
5. Which of the following laws is the consequence of the Law of conservation of energy?
a.Lenzβs Law
b.Ohmβs Law
c.Archimedes Law
d.All of the above
Answer: (a) Lenzβs Law
6. Which of the following apparatus construction uses electromagnetic induction?
a.Voltmeter
b.Galvanometer
c.Generator
d.Electric Motor
Answer: (c) Generator
7. Which of the following factors is the self inductance associated with a coil is independent of?
a.induced voltage
b.current
c.time
d.coil resistance
Answer: (d) coil resistance
8. Which of the following rules is used to identify the direction of the current induced in a wire moving in a magnetic field?
a.Ampereβs Rule
b.Flemingβs Left-Hand Rule
c.Flemingβs Right-Hand Rule
d.None of the above
Answer: (b) Flemingβs Left-Hand Rule
9. Which of the following statements is true?
a.A metal plate can be heated by passing either a direct current or an alternating current through the plate.
b.A metal plate can be heated by placing it in a time-invariant magnetic field.
c.A metal plate can be heated by placing it in a time-variant magnetic field
d.Both (a) and (c)
Answer: (d) Both (a) and (c)
10. The induced emf is equal to the coefficient of self-inductance is equal to unity, when the rate of change of current is unity.
a.True
b.False
Answer: (a) True
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π Physics Top10 MCQS
π Physics Book -1 MCQS
1. Which of the following factors is the induced charge in an electromagnetic induction independent of?
a.Time
b.Resistance of the coil
c.Change of flux
d.None of the above
2. Which of the following states that an emf is induced whenever there is a change in the magnetic field linked with electric circuits?
a.Lenzβs Law
b.Ohmβs Law
c.Faradayβs Law of Electromagnetic Induction
d.None of the above
3. Which of the following gives the polarity of the induced emf?
a.Biot-Savart Law
b.Lenzβs Law
c.Ampereβs circuital Law
d.Flemingβs right-hand Rule
4. Electrical Inertia is the measure of
a.Self Inductance
b.Mutual Inductance
c.Impedance
d.None of the above
5. Which of the following laws is the consequence of the Law of conservation of energy?
a.Lenzβs Law
b.Ohmβs Law
c.Archimedes Law
d.All of the above
6. Which of the following apparatus construction uses electromagnetic induction?
a.Voltmeter
b.Galvanometer
c.Generator
d.Electric Motor
7. Which of the following factors is the self inductance associated with a coil is independent of?
a.induced voltage
b.current
c.time
d.coil resistance
8. Which of the following rules is used to identify the direction of the current induced in a wire moving in a magnetic field?
a.Ampereβs Rule
b.Flemingβs Left-Hand Rule
c.Flemingβs Right-Hand Rule
d.None of the above
9. Which of the following statements is true?
a.A metal plate can be heated by passing either a direct current or an alternating current through the plate.
b.A metal plate can be heated by placing it in a time-invariant magnetic field.
c.A metal plate can be heated by placing it in a time-variant magnetic field
d.Both (a) and (c)
10. The induced emf is equal to the coefficient of self-inductance is equal to unity, when the rate of change of current is unity.
a.True
b.False
π΄
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RNA lacks the nitrogen base of _______?
Anonymous Quiz
53%
a) Thymine
16%
b) Cytosine
25%
c) Uracil
6%
d) Adenine
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Lysine is an example of a polar but uncharged amino acid ?
Anonymous Quiz
18%
a) Serine
25%
b) Aspartate
35%
c) Lysine
21%
d) Arginine
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Approximate percentage of elements in Human body
β’ Oxygen - 65%
β’ Carbon - 18%
β’ Hydrogen - 10%
β’ Nitrogen - 3%
β’ Calcium - 2%
β’ Phosphorous - 1%
β’ Potassium - 0.35%
β’ Sodium - 0.15%
β’ Chloride - 0.15%
β’ Magnesium - 0.05%
β’ Iron - 0.0004%
β’ Oxygen - 65%
β’ Carbon - 18%
β’ Hydrogen - 10%
β’ Nitrogen - 3%
β’ Calcium - 2%
β’ Phosphorous - 1%
β’ Potassium - 0.35%
β’ Sodium - 0.15%
β’ Chloride - 0.15%
β’ Magnesium - 0.05%
β’ Iron - 0.0004%
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1. What did Rutherfordβs alpha particle experiment prove?
a.Electrons
b.Protons
c.Neutrons
d.Nucleus
Answer: (d) Nucleus
2. Why was Rutherfordβs atomic model unstable?
a.Electrons do not remain in orbit.
b.Nuclei will break down.
c.The nucleus repels electrons.
d.Orbiting electrons radiate energy.
Answer: (a) Electrons do not remain in orbit .
3. Balmer series lies in which spectrum?
a.Ultraviolet
b.Visible
c.Infrared
d.Partially Visible
Answer: (b) Visible
4. According to the classical theory, the circular path of the electrons is ?
a.Circular
b.Parabolic
c.Spiral
d.Straight line
Answer: (c) Spiral
5. Electrons in the atom are held to the nucleus by ?
a.Nuclear Force
b.Coulombβs Force
c.Gravitational Force
d.Van Der Waalβs Force
Answer: (b) Coulomb's Force
6. The electrons of Rutherfordβs model would be expected to lose energy because?
a.They jump on the nucleus
b.They move randomly
c.Radiate electromagnetic waves
d.Escape from the atom
Answer: (c) Radiate electromagnetic waves.
7. Who discovered the first spectral series?
a.Lyman
b.Balmer
c.Paschen
d.Pfund
Answer: (b) Balmer
8. Which of the following did Bohr use to explain his theory?
a.Quantization of angular momentum
b.Conservation of Quantum frequency
c.Conservation of Mass
d.Conservation of Linear Momentum
Answer: (a) Quantization of angular momentum
9. The significant result deduced from Rutherfordβs scattering experiment is that?
a.the whole of the positive charge is concentrated at the center of an atom
b.there are neutrons inside the nucleus
c.Ξ±-particles are hydrogen nuclei
d.electrons are embedded in the atom
Answer: (a) the whole of the positive charge is concentrated at the center of an atom.
10. The first model of the atom was proposed by ?
a.Neils Bohr
b.Albert Einstein
c.J.J Thompson
d.Ernest Rutherford
Answer: (c) J.J Thompson
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π΄https://youtube.com/playlist?list=PL3s-GF0G43lSeb18V6-DFfM_e6iS7r4tN&si=vUQ9GbbTgQ5pfHDZ
1. What did Rutherfordβs alpha particle experiment prove?
a.Electrons
b.Protons
c.Neutrons
d.Nucleus
2. Why was Rutherfordβs atomic model unstable?
a.Electrons do not remain in orbit.
b.Nuclei will break down.
c.The nucleus repels electrons.
d.Orbiting electrons radiate energy.
3. Balmer series lies in which spectrum?
a.Ultraviolet
b.Visible
c.Infrared
d.Partially Visible
4. According to the classical theory, the circular path of the electrons is ?
a.Circular
b.Parabolic
c.Spiral
d.Straight line
5. Electrons in the atom are held to the nucleus by ?
a.Nuclear Force
b.Coulombβs Force
c.Gravitational Force
d.Van Der Waalβs Force
6. The electrons of Rutherfordβs model would be expected to lose energy because?
a.They jump on the nucleus
b.They move randomly
c.Radiate electromagnetic waves
d.Escape from the atom
7. Who discovered the first spectral series?
a.Lyman
b.Balmer
c.Paschen
d.Pfund
8. Which of the following did Bohr use to explain his theory?
a.Quantization of angular momentum
b.Conservation of Quantum frequency
c.Conservation of Mass
d.Conservation of Linear Momentum
9. The significant result deduced from Rutherfordβs scattering experiment is that?
a.the whole of the positive charge is concentrated at the center of an atom
b.there are neutrons inside the nucleus
c.Ξ±-particles are hydrogen nuclei
d.electrons are embedded in the atom
10. The first model of the atom was proposed by ?
a.Neils Bohr
b.Albert Einstein
c.J.J Thompson
d.Ernest Rutherford
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In nuclear reactions, there is a conservation of ?
Anonymous Quiz
18%
a.Mass only
26%
b.Energy only
50%
c.Mass, energy and momentum
6%
d.Momentum only
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Which of the following are not emitted by radioactive substances?
Anonymous Quiz
21%
a.Protons
21%
b.Electrons
24%
c.Gamma Rays
34%
d.Helium Nuclei
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β
Atomic and Molecular Masses
βAtomic Mass:
Mass of an atom.
Reported in atomic mass unit βamuβ or unified mass βuβ
One atomic mass unit i.e. amu, is the mass exactly equal to one-twelfth the mass of one carbon-12 atom.
βMolecular Mass:
Mass of a molecule of covalent compound.
It is equal to the sum of atomic masses of all the elements present in the molecule.
Formula Unit Mass
Mass of a molecule of an ionic compound
It is also equal to the sum of atomic masses of all the elements present in the molecule
β Mole Concept:
βMole:
Unit of amount of substance.
One mole amount of substance that contains as many particles or entities as there are atoms in exactly 12 g of the 12C isotope.
βMolar mass:
Mass of one mole of a substance in gram
Molar mass in gram in numerically equal to atomic/molecular/formula mass in amu or u.
βAtomic Mass:
Mass of an atom.
Reported in atomic mass unit βamuβ or unified mass βuβ
One atomic mass unit i.e. amu, is the mass exactly equal to one-twelfth the mass of one carbon-12 atom.
βMolecular Mass:
Mass of a molecule of covalent compound.
It is equal to the sum of atomic masses of all the elements present in the molecule.
Formula Unit Mass
Mass of a molecule of an ionic compound
It is also equal to the sum of atomic masses of all the elements present in the molecule
β Mole Concept:
βMole:
Unit of amount of substance.
One mole amount of substance that contains as many particles or entities as there are atoms in exactly 12 g of the 12C isotope.
βMolar mass:
Mass of one mole of a substance in gram
Molar mass in gram in numerically equal to atomic/molecular/formula mass in amu or u.
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10HβO
24HβO
Saltpeter = KNOβ
Ca(OCl)Cl
Β½HβO
Benzene = CβHβ
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In a reaction, what is the driving force?
Anonymous Quiz
30%
a) Energy given
39%
b) Energy released
25%
c) Free energy
6%
d) None of the mentioned
A coordination complexβs core atom/ion is also known as ________?
Anonymous Quiz
19%
a) Bronsted-Lowry acid
36%
b) Lewis base
36%
c) Lewis acid
9%
d) Bronsted-Lowry base
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1. Any substance made up of multiple repeating units called polymers is referred to as a polymer.
a) Mers
b) Plastic
c) Resins
d) Blocks
Answer: a
2. Which of the following polymers does not fall within the configuration category?
a) Cross-linked
b) Atactic
c) Syndiotactic
d) Isotactic
Answer: a
3. Which of the following is not a thermoplastic example?
a) Polyvinyl chloride
b) Epoxy
c) Polyesters
d) Nylon
Answer: b
4. Which of the following criteria does not apply to polymers?
a) Source
b) Structure
c) Method of preparation
d) Number of monomers
Answer: d
5. Which of the following does not belong in the category of natural polymers?
a) Cellulose
b) Starch
c) Rayon
d) RNA
Answer: c
6. The synthesis of which of the following polymers necessitates the loss of tiny molecules on a regular basis?
a) Polythene
b) Nylon-6,6
c) Buna-N
d) Buna-S
Answer: b
7. The crystallinity rises as the polymerβs brittleness _______.
a) Increases
b) Remains constant
c) Moderate
d) Decreases
Answer: d
8. The polymer absorbs ______ and expands.
a) Water
b) Ether
c) Ethyl alcohol
d) Methanol
Answer: a
9. Short-chained, low-molecular-weight polymers are known as liquid or gas polymers.
a) High-polymers
b) Oligo-polymers
c) Copolymers
d) Homopolymers
Answer: b
10. Which of the following stages of addition polymerization is not one of them?
a) Initiation
b) Recrystallisation
c) Termination
d) Propagation
Answer: b
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1. Any substance made up of multiple repeating units called polymers is referred to as a polymer.
a) Mers
b) Plastic
c) Resins
d) Blocks
2. Which of the following polymers does not fall within the configuration category?
a) Cross-linked
b) Atactic
c) Syndiotactic
d) Isotactic
3. Which of the following is not a thermoplastic example?
a) Polyvinyl chloride
b) Epoxy
c) Polyesters
d) Nylon
4. Which of the following criteria does not apply to polymers?
a) Source
b) Structure
c) Method of preparation
d) Number of monomers
5. Which of the following does not belong in the category of natural polymers?
a) Cellulose
b) Starch
c) Rayon
d) RNA
6. The synthesis of which of the following polymers necessitates the loss of tiny molecules on a regular basis?
a) Polythene
b) Nylon-6,6
c) Buna-N
d) Buna-S
7. The crystallinity rises as the polymerβs brittleness _______.
a) Increases
b) Remains constant
c) Moderate
d) Decreases
8. The polymer absorbs ______ and expands.
a) Water
b) Ether
c) Ethyl alcohol
d) Methanol
9. Short-chained, low-molecular-weight polymers are known as liquid or gas polymers.
a) High-polymers
b) Oligo-polymers
c) Copolymers
d) Homopolymers
10. Which of the following stages of addition polymerization is not one of them?
a) Initiation
b) Recrystallisation
c) Termination
d) Propagation
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