Q. Which of the following is a practical application of total internal reflection?
A.
Lenses in glasses.
B.
Mirrors in telescopes.
C.
Fiber optic communication.
D.
Convex lenses.
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Solution
Fiber optic communication relies on total internal reflection to transmit light signals over long distances with minimal loss.
Correct Answer: C — Fiber optic communication.
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Q. Which of the following is a primary alcohol derived from an alkane?
A.
Methanol
B.
Ethanol
C.
Propan-1-ol
D.
Butanol
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Solution
Propan-1-ol is a primary alcohol derived from propane.
Correct Answer: C — Propan-1-ol
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Q. Which of the following is a primary alcohol?
A.
1-butanol
B.
2-butanol
C.
tert-butanol
D.
cyclohexanol
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Solution
1-butanol has the hydroxyl group attached to a primary carbon atom.
Correct Answer: A — 1-butanol
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Q. Which of the following is a primary amine?
A.
CH3NH2
B.
(CH3)2NH
C.
(C2H5)3N
D.
C6H5NH2
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Solution
CH3NH2 is a primary amine as it has one alkyl group attached to the nitrogen atom.
Correct Answer: A — CH3NH2
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Q. Which of the following is a primary cell?
A.
Lead-acid battery
B.
Nickel-cadmium battery
C.
Zinc-carbon battery
D.
Lithium-ion battery
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Solution
The zinc-carbon battery is a primary cell, while the others are secondary cells.
Correct Answer: C — Zinc-carbon battery
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Q. Which of the following is a primary haloalkane?
A.
1-bromobutane
B.
2-bromobutane
C.
3-bromobutane
D.
Bromobenzene
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Solution
1-bromobutane is a primary haloalkane as the carbon attached to the halogen is bonded to only one other carbon.
Correct Answer: A — 1-bromobutane
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Q. Which of the following is a primary structure of proteins?
A.
Sequence of amino acids
B.
Alpha-helix structure
C.
Beta-pleated sheet
D.
Quaternary structure
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Solution
The primary structure of proteins refers to the linear sequence of amino acids linked by peptide bonds.
Correct Answer: A — Sequence of amino acids
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Q. Which of the following is a property of a Newtonian fluid?
A.
Viscosity changes with shear rate
B.
Constant viscosity regardless of shear rate
C.
Non-linear flow behavior
D.
High compressibility
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Solution
A Newtonian fluid has a constant viscosity regardless of the shear rate.
Correct Answer: B — Constant viscosity regardless of shear rate
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Q. Which of the following is a property of alkali metals?
A.
They are good conductors of electricity
B.
They are non-metals
C.
They have high electronegativity
D.
They are found in nature as free elements
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Solution
Alkali metals are good conductors of electricity due to their free-moving electrons.
Correct Answer: A — They are good conductors of electricity
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Q. Which of the following is a property of alkaline earth metals?
A.
They are highly reactive with water
B.
They have a higher density than alkali metals
C.
They form acidic oxides
D.
They have a full outer shell
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Solution
Alkaline earth metals have a higher density than alkali metals.
Correct Answer: B — They have a higher density than alkali metals
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Q. Which of the following is a property of alkanes?
A.
They are polar
B.
They are soluble in water
C.
They are non-polar
D.
They have high reactivity
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Solution
Alkanes are non-polar molecules and are generally insoluble in water.
Correct Answer: C — They are non-polar
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Q. Which of the following is a property of alkenes?
A.
Saturated
B.
Unsaturated
C.
Non-polar
D.
Inert
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Solution
Alkenes are unsaturated hydrocarbons due to the presence of at least one double bond.
Correct Answer: B — Unsaturated
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Q. Which of the following is a property of alkynes?
A.
They are saturated
B.
They contain a triple bond
C.
They are less reactive than alkenes
D.
They have the formula CnH2n
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Solution
Alkynes contain at least one triple bond between carbon atoms.
Correct Answer: B — They contain a triple bond
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Q. Which of the following is a property of aromatic compounds?
A.
High reactivity
B.
Planar structure
C.
Non-polar nature
D.
All of the above
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Solution
Aromatic compounds are characterized by a planar structure and exhibit unique stability due to resonance, but they are generally less reactive than alkenes.
Correct Answer: B — Planar structure
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Q. Which of the following is a property of aromatic hydrocarbons?
A.
They are always saturated
B.
They have a pleasant smell
C.
They contain a benzene ring
D.
They are non-polar
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Solution
Aromatic hydrocarbons contain a benzene ring.
Correct Answer: C — They contain a benzene ring
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Q. Which of the following is a property of carboxylic acids?
A.
They are basic
B.
They have high boiling points
C.
They are insoluble in water
D.
They do not form hydrogen bonds
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Solution
Carboxylic acids have high boiling points due to hydrogen bonding.
Correct Answer: B — They have high boiling points
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Q. Which of the following is a property of cycloalkanes?
A.
They are always aromatic
B.
They have a ring structure
C.
They are unsaturated
D.
They contain only single bonds
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Solution
Cycloalkanes have a ring structure and can be saturated or unsaturated depending on the number of hydrogen atoms.
Correct Answer: B — They have a ring structure
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Q. Which of the following is a property of diatomic hydrogen (H2)?
A.
It is a liquid at room temperature
B.
It is highly flammable
C.
It has a high density
D.
It is a good conductor of electricity
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Solution
Diatomic hydrogen (H2) is highly flammable and can easily ignite in the presence of oxygen.
Correct Answer: B — It is highly flammable
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Q. Which of the following is a property of elastomers?
A.
Brittle
B.
Rigid
C.
Elastic
D.
Insoluble
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Solution
Elastomers are known for their elastic properties, allowing them to stretch and return to their original shape.
Correct Answer: C — Elastic
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Q. Which of the following is a property of fluids?
A.
Incompressibility
B.
Elasticity
C.
Brittleness
D.
Ductility
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Solution
Fluids are often considered incompressible for practical purposes, especially in hydrodynamics.
Correct Answer: A — Incompressibility
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Q. Which of the following is a property of group 13 elements?
A.
Form anions
B.
Form covalent compounds
C.
High ionization energy
D.
High electronegativity
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Solution
Group 13 elements typically form covalent compounds due to their electron configuration.
Correct Answer: B — Form covalent compounds
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Q. Which of the following is a property of group 14 elements?
A.
Forming ionic bonds
B.
Forming covalent bonds
C.
High reactivity
D.
Low melting points
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Solution
Group 14 elements typically form covalent bonds due to their tetravalent nature.
Correct Answer: B — Forming covalent bonds
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Q. Which of the following is a property of group 14 p-block elements?
A.
Forming ionic bonds
B.
Forming covalent bonds
C.
High electronegativity
D.
Low melting points
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Solution
Group 14 p-block elements typically form covalent bonds due to their valence electron configuration.
Correct Answer: B — Forming covalent bonds
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Q. Which of the following is a property of group 15 elements?
A.
Forming diatomic molecules
B.
High ionization energies
C.
Forming ionic bonds
D.
Exist in multiple allotropes
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Solution
Group 15 elements, such as phosphorus, exist in multiple allotropes.
Correct Answer: D — Exist in multiple allotropes
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Q. Which of the following is a property of group 17 elements?
A.
They are all gases
B.
They are all metals
C.
They are highly electronegative
D.
They have low ionization energies
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Solution
Group 17 elements, also known as halogens, are highly electronegative.
Correct Answer: C — They are highly electronegative
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Q. Which of the following is a property of halogens?
A.
Good conductors of electricity
B.
Diatomic molecules
C.
High melting points
D.
All are gases at room temperature
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Solution
Halogens exist as diatomic molecules (e.g., Cl2, F2) in their elemental form.
Correct Answer: B — Diatomic molecules
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Q. Which of the following is a property of heavy water (D2O)?
A.
It is lighter than regular water
B.
It has a higher boiling point than regular water
C.
It is more reactive than regular water
D.
It is less dense than regular water
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Solution
Heavy water (D2O) has a higher boiling point than regular water (H2O).
Correct Answer: B — It has a higher boiling point than regular water
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Q. Which of the following is a property of heavy water?
A.
It is lighter than regular water
B.
It has a higher boiling point than regular water
C.
It is more reactive than regular water
D.
It is less dense than regular water
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Solution
Heavy water (D2O) has a higher boiling point than regular water (H2O).
Correct Answer: B — It has a higher boiling point than regular water
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Q. Which of the following is a property of hydrogen chloride (HCl)?
A.
It is a gas at room temperature
B.
It is a strong base
C.
It is insoluble in water
D.
It has a high boiling point
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Solution
Hydrogen chloride (HCl) is a gas at room temperature and is highly soluble in water.
Correct Answer: A — It is a gas at room temperature
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Q. Which of the following is a property of hydrogen chloride gas?
A.
It is a strong base
B.
It is a colorless gas
C.
It is insoluble in water
D.
It is a non-polar molecule
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Solution
Hydrogen chloride (HCl) is a colorless gas that is soluble in water.
Correct Answer: B — It is a colorless gas
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