Major Competitive Exams
Q. Which of the following is NOT a characteristic of adsorption?
A.
It is a surface phenomenon.
B.
It is a bulk phenomenon.
C.
It is exothermic in nature.
D.
It reaches equilibrium.
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Solution
Adsorption is a surface phenomenon, while absorption is a bulk phenomenon.
Correct Answer: B — It is a bulk phenomenon.
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Q. Which of the following is NOT a characteristic of an ecosystem? (2021)
A.
Energy flow
B.
Nutrient cycling
C.
Static population
D.
Biotic and abiotic interactions
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Solution
Ecosystems are dynamic and characterized by changing populations, not static populations.
Correct Answer: C — Static population
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Q. Which of the following is NOT a characteristic of chemisorption?
A.
Reversible
B.
High heat of adsorption
C.
Specificity
D.
Monolayer formation
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Solution
Chemisorption is typically irreversible, unlike physisorption which is reversible.
Correct Answer: A — Reversible
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Q. Which of the following is NOT a characteristic of gases?
A.
They have no definite shape.
B.
They are compressible.
C.
They have a definite volume.
D.
They fill the container they are in.
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Solution
Gases do not have a definite volume; they expand to fill their container.
Correct Answer: C — They have a definite volume.
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Q. Which of the following is NOT a characteristic of liquids?
A.
Definite volume
B.
Definite shape
C.
Incompressible
D.
Fluidity
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Solution
Liquids have a definite volume but take the shape of their container, hence they do not have a definite shape.
Correct Answer: B — Definite shape
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Q. Which of the following is NOT a characteristic of living organisms? (2020)
A.
Growth
B.
Reproduction
C.
Movement
D.
Inertia
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Solution
Inertia is not a characteristic of living organisms; they exhibit growth, reproduction, and movement.
Correct Answer: D — Inertia
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Q. Which of the following is not a characteristic of noble gases?
A.
Inertness
B.
Monatomic nature
C.
High reactivity
D.
Low boiling points
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Solution
Noble gases are known for their inertness and low reactivity, making high reactivity incorrect.
Correct Answer: C — High reactivity
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Q. Which of the following is not a characteristic of p-block elements? (2021)
A.
Form covalent bonds
B.
Have high electronegativity
C.
Are all metals
D.
Can form multiple oxidation states
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Solution
Not all p-block elements are metals; many are nonmetals and metalloids.
Correct Answer: C — Are all metals
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Q. Which of the following is NOT a characteristic of r-selected species? (2019)
A.
High fecundity
B.
Short lifespan
C.
Low parental investment
D.
Long gestation period
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Solution
R-selected species are characterized by high fecundity and short lifespans, not long gestation periods.
Correct Answer: D — Long gestation period
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Q. Which of the following is NOT a characteristic of the inductive effect?
A.
Permanent
B.
Distance-dependent
C.
Reversible
D.
Weakens with distance
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Solution
The inductive effect is permanent and weakens with distance, but it is not reversible.
Correct Answer: C — Reversible
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Q. Which of the following is NOT a characteristic of the phylum Echinodermata? (2022)
A.
Radial symmetry
B.
Water vascular system
C.
Presence of a notochord
D.
Tube feet
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Solution
Echinodermata do not possess a notochord; this feature is characteristic of Chordata.
Correct Answer: C — Presence of a notochord
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Q. Which of the following is not a characteristic of the plant kingdom? (2020)
A.
Eukaryotic cells
B.
Autotrophic nutrition
C.
Presence of chlorophyll
D.
Heterotrophic nutrition
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Solution
The plant kingdom is characterized by eukaryotic cells, autotrophic nutrition, and the presence of chlorophyll. Heterotrophic nutrition is not a characteristic of plants.
Correct Answer: D — Heterotrophic nutrition
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Q. Which of the following is not a characteristic of transition metals?
A.
Variable oxidation states
B.
Formation of colored compounds
C.
High electronegativity
D.
Catalytic properties
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Solution
Transition metals typically have variable oxidation states, form colored compounds, and exhibit catalytic properties, but they do not have high electronegativity.
Correct Answer: C — High electronegativity
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Q. Which of the following is NOT a characteristic of waves?
A.
Reflection
B.
Refraction
C.
Diffraction
D.
Conduction
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Solution
Conduction is a mode of heat transfer, not a characteristic of wave motion. The other options are properties of waves.
Correct Answer: D — Conduction
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Q. Which of the following is NOT a component of a Wheatstone bridge?
A.
Galvanometer
B.
Battery
C.
Inductor
D.
Resistors
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Solution
An inductor is not a component of a Wheatstone bridge; it consists of resistors, a galvanometer, and a battery.
Correct Answer: C — Inductor
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Q. Which of the following is not a component of DNA? (2018)
A.
Deoxyribose
B.
Phosphate group
C.
Ribose
D.
Nitrogenous base
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Solution
Ribose is not a component of DNA; it is found in RNA. DNA contains deoxyribose.
Correct Answer: C — Ribose
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Q. Which of the following is NOT a condition for a Wheatstone bridge to be balanced?
A.
The ratio of resistances must be equal
B.
No current flows through the galvanometer
C.
The resistances must be equal
D.
The potential difference across the galvanometer is zero
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Solution
While the other conditions are necessary for balance, the resistances do not need to be equal, just in the same ratio.
Correct Answer: C — The resistances must be equal
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Q. Which of the following is NOT a condition for natural selection to occur?
A.
Variation in traits
B.
Inheritance of traits
C.
Overproduction of offspring
D.
Uniformity of traits
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Solution
Uniformity of traits is not a condition for natural selection; rather, variation in traits is essential for natural selection to act upon.
Correct Answer: D — Uniformity of traits
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Q. Which of the following is NOT a condition for Raoult's Law to be applicable?
A.
The solution must be ideal.
B.
The solute must be non-volatile.
C.
The components must be miscible in all proportions.
D.
The solution must be at high pressure.
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Solution
Raoult's Law is applicable under conditions of ideal solutions, and high pressure is not a requirement.
Correct Answer: D — The solution must be at high pressure.
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Q. Which of the following is NOT a condition for Raoult's Law to hold true?
A.
The solution must be ideal.
B.
The solute must be volatile.
C.
The solute and solvent must be miscible.
D.
The temperature must be constant.
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Solution
Raoult's Law applies to ideal solutions, and it is not necessary for the solute to be volatile.
Correct Answer: B — The solute must be volatile.
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Q. Which of the following is NOT a derivative of carboxylic acid?
A.
Ester
B.
Amide
C.
Acid chloride
D.
Alcohol
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Solution
Alcohols are not derivatives of carboxylic acids; they are separate functional groups.
Correct Answer: D — Alcohol
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Q. Which of the following is not a domain in the three-domain system? (2022)
A.
Bacteria
B.
Eukarya
C.
Archaea
D.
Fungi
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Solution
Fungi is not a domain; it is a kingdom within the domain Eukarya.
Correct Answer: D — Fungi
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Q. Which of the following is not a domain of life? (2022)
A.
Bacteria
B.
Archaea
C.
Eukarya
D.
Viruses
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Solution
Viruses are not classified as a domain of life.
Correct Answer: D — Viruses
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Q. Which of the following is not a f-block element?
A.
Uranium
B.
Plutonium
C.
Zirconium
D.
Neptunium
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Solution
Zirconium (Zr) is a d-block element, while Uranium, Plutonium, and Neptunium are f-block elements.
Correct Answer: C — Zirconium
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Q. Which of the following is NOT a factor affecting solubility?
A.
Temperature
B.
Pressure
C.
Nature of solute and solvent
D.
Color of solute
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Solution
Color of solute does not affect its solubility; solubility is influenced by temperature, pressure, and the nature of solute and solvent.
Correct Answer: D — Color of solute
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Q. Which of the following is NOT a factor affecting the solubility of a solute in a solvent?
A.
Temperature
B.
Pressure
C.
Nature of solute and solvent
D.
Color of solute
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Solution
The color of the solute does not affect its solubility; solubility is influenced by temperature, pressure, and the nature of the solute and solvent.
Correct Answer: D — Color of solute
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Q. Which of the following is NOT a family of curves?
A.
y = kx^2
B.
y = ksin(x)
C.
y = kx
D.
y = k/x
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Solution
y = kx represents a family of straight lines, but it is not a family of curves.
Correct Answer: C — y = kx
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Q. Which of the following is not a form of energy? (2020)
A.
Kinetic Energy
B.
Potential Energy
C.
Thermal Energy
D.
Magnetic Field
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Solution
Magnetic field is not a form of energy; it is a field that exerts a force on charged particles.
Correct Answer: D — Magnetic Field
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Q. Which of the following is NOT a function of blood? (2023)
A.
Transporting gases
B.
Regulating body temperature
C.
Producing hormones
D.
Transporting nutrients
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Solution
While blood plays many roles, it does not produce hormones; hormones are produced by glands in the endocrine system.
Correct Answer: C — Producing hormones
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Q. Which of the following is NOT a function of carbohydrates?
A.
Energy storage
B.
Structural support
C.
Hormone production
D.
Cell recognition
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Solution
Carbohydrates are primarily involved in energy storage, structural support, and cell recognition, but they do not produce hormones.
Correct Answer: C — Hormone production
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