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General Aptitude and Chemistry

This category gathers questions that test logical reasoning, numerical ability, and fundamental chemistry concepts. It helps learners build problem‑solving skills and a solid grasp of basic chemical principles, useful for a range of competitive examinations.

25 questions

For propene at 298 K, the molar enthalpy of hydrogenation is ‒124.27 kJ mol ‒¹ and the standard enthalpy of formation is

Biologically, molecular bonding operates via hybridization and orbital overlap dictate geometry and reactivity. Thus Option NAT is appropriate since it satisfies bonding and stability criteria, reinforcing core concepts taught in chemistry.

Ref: Atkins and de Paula, Physical Chemistry, 11th Edition, Chapter 14, Molecular Structure and Bonding, discusses VSEPR, hybridization, molecular orbitals, dipole moments and spectroscopic properties explaining chemical bonding and reactivity.

For a weak acid at 298 K the molar conductivities (in ohm ‒¹ m ² mol ‒¹ ), at infinite dilution and 0.04 mol dm ‒³ are 4

This outcome reflects molecular bonding, where hybridization and orbital overlap dictate geometry and reactivity. Option NAT captures this correctly because it satisfies bonding and stability criteria, consistent with textbook descriptions and experimental observations in chemistry.

Ref: Housecroft and Sharpe, Inorganic Chemistry, 5th Edition, Chapter 4, Coordination and Molecular Geometry, explains crystal field theory, ligand field, bond lengths and molecular geometry relevant to inorganic structures.

When 1.0 g of urea (Molecular Weight = 60) is dissolved in 200 g of solvent S, the freezing point of S is lowered by 0.2

Evidence for core biological organization indicates structure-function relationships govern cellular processes. Option NAT aligns with this, as it integrates fundamental life science principles, reflecting standard interpretations in general biology. This mechanism is extensively documented and reinforced by experimental data across multiple model systems and textbook discussions.

Ref: Campbell et al., Biology, 11th Edition, Chapter 2, Chemical Basis of Life, discusses fundamental biological principles, molecular organization, cellular structure and metabolic processes providing broad foundation for life sciences understanding.

Ferrous sulfate on reaction with potassium hexacyanochromate(III) produces a brick red complex. The number of unpaired e

Mechanistically, molecular bonding involves hybridization and orbital overlap dictate geometry and reactivity. This validates Option NAT because it satisfies bonding and stability criteria, a pattern repeatedly demonstrated in chemistry research.

Ref: Housecroft and Sharpe, Inorganic Chemistry, 5th Edition, Chapter 4, Coordination and Molecular Geometry, explains crystal field theory, ligand field, bond lengths and molecular geometry relevant to inorganic structures.

The crystal field stabilization energy (excluding pairing energy, if any) of [CoCl ₄ ] ²‒ in Δo units is _________.

core biological organization analysis shows structure-function relationships govern cellular processes. Consequently Option NAT emerges as the valid choice since it integrates fundamental life science principles, aligning with established principles in general biology literature.

Ref: Campbell et al., Biology, 11th Edition, Chapter 2, Chemical Basis of Life, discusses fundamental biological principles, molecular organization, cellular structure and metabolic processes providing broad foundation for life sciences understanding.

Given: The potential energy of two electrons separated by Bohr radius is 27.211 eV. The first Bohr radius of hydrogen is

Understanding membrane organization reveals lipid bilayer and protein trafficking maintain compartmentalization. Therefore Option NAT is correct because it aligns with organelle function and transport, which underpins key processes in cell biology.

Ref: Lodish et al., Molecular Cell Biology, 8th Edition, Chapter 13, Cytoskeleton and Motility, covers microtubules, actin filaments, intermediate filaments and motor proteins explaining cellular architecture, intracellular transport and motility.

The total number of chair conformations possible for 1,2-dimethylcyclohexane is _____.

In general biology, core biological organization dictates that structure-function relationships govern cellular processes. Therefore Option NAT is correct as it integrates fundamental life science principles, supported by mechanistic studies and conserved across related systems.

Ref: Alberts et al., Essential Cell Biology, 5th Edition, Chapter 1, Introduction to Cells, covers cellular organization, molecular mechanisms, genetic information and biological systems offering integrated perspective on core life science concepts.

The numeral in the units position of 211 ⁸⁷⁰ + 146 ¹²⁷ × 3 ⁴²⁴ is _____.

The principle of core biological organization explains that structure-function relationships govern cellular processes. Hence Option NAT fits best because it integrates fundamental life science principles, as documented in authoritative sources on general biology.

Ref: Alberts et al., Essential Cell Biology, 5th Edition, Chapter 1, Introduction to Cells, covers cellular organization, molecular mechanisms, genetic information and biological systems offering integrated perspective on core life science concepts.

The following graph represents the installed capacity for cement production (in tonnes) and the actual production (in to

Understanding enzyme kinetics reveals substrate binding and catalytic efficiency determine reaction rates. Therefore Option NAT is correct because it reflects active-site specificity and regulation, which underpins key processes in biochemistry.

Ref: Lehninger Principles of Biochemistry, 7th Edition, Chapter 15, Metabolic Regulation, explains hormonal control, allosteric regulation, feedback inhibition and pathway coordination essential for understanding intermediary metabolism and homeostasis.

The correct statement is

The principle of core biological organization explains that structure-function relationships govern cellular processes. Hence [Co(NH3)5I] ²⁺ is less stable than [Co(NH ₃ ) ₅ F] ²⁺ fits best because it integrates fundamental life science principles, as documented in authoritative sources on general biology.

Ref: Alberts et al., Essential Cell Biology, 5th Edition, Chapter 1, Introduction to Cells, covers cellular organization, molecular mechanisms, genetic information and biological systems offering integrated perspective on core life science concepts.

The correct comparison of pKa ’s of [Fe(H2O)6]2 ⁺ , [Fe(H2O)6]3 ⁺ , V ₂ O ₅ and N ₂ O ₅ is

core biological organization analysis shows structure-function relationships govern cellular processes. Consequently [Fe(H2O)6]3+ < [Fe(H2O)6]2 ⁺ and N ₂ O ₅ < V ₂ O ₅ emerges as the valid choice since it integrates fundamental life science principles, aligning with established principles in general biology literature.

Ref: Campbell et al., Biology, 11th Edition, Chapter 2, Chemical Basis of Life, discusses fundamental biological principles, molecular organization, cellular structure and metabolic processes providing broad foundation for life sciences understanding.

For an enzyme catalyzed reaction, the plot that correctly represents the relationship between the rate and temperature i

Understanding enzyme kinetics reveals substrate binding and catalytic efficiency determine reaction rates. Therefore D is correct because it reflects active-site specificity and regulation, which underpins key processes in biochemistry. This mechanism is extensively documented and reinforced by experimental data across multiple model systems and textbook discussions.

Ref: Nelson and Cox, Lehninger Principles of Biochemistry, 7th Edition, Chapter 6, Enzyme Kinetics and Regulation, discusses Michaelis-Menten equation, catalytic mechanisms, allosteric control and metabolic integration supporting enzyme function and pathway regulation.