NEET MOCK TEST 19

CHEMISTRY

Which complex shows ionization isomerism with [Co(NH₃)5NO₂]Cl₂ ?

[Co(NH₃)5Cl]NO₂Cl swaps Cl^- and NO₂^- with [Co(NH₃)5NO₂]Cl₂, exhibiting ionization isomerism. This follows from latest NCERT 2026-27 principle explaining the concept clearly for NEET students in simple steps as per rationalized syllabus.

Ref: NCERT Chemistry Textbook - Latest Edition for Academic Session 2026-27 (Rationalized Textbook for Class XI and XII)Topic: Mole concept, atomic structure, chemical formulas like H₂O, CO₂, CH₃CH₂NH₂ and periodic trends.

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PHYSICS

The dimensional formula of energy density is [M L^{-1 T^{-2] . What is the dimensional formula of energy flux (energy pe

Given: The dimensional formula of energy density is [M L^{-1 T^{-2] . What is the dimensional formula of energy flux (energy per unit area per unit time)? Formula: Energy flux = Energy / Area / Time. Substitution & Calculation: [M L² T^{-2] / [L²] / [T] = [M L² T^{-2] [L^{-2] [T^{-1] = [M T^{-3] . Final Result: The computed value matches expected outcome and confirms correct choice as per latest NCERT 2026-27.

Ref: NCERT Physics Textbook - Latest Edition for Academic Session 2026-27 (Rationalized Textbook for Class XI and XII, continuing as per NCERT advisory for 2026-27),Topic: Fundamental laws, definitions and applications as per latest NCERT. The section explains governing laws, formulas like μ₀ = 4π.

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CHEMISTRY

Which complex shows optical isomerism?

[PtCl₂(en)2]^{2+ (cis isomer) with two bidentate en ligands in a square planar geometry is chiral, showing optical isomerism (d and l forms). This follows from latest NCERT 2026-27 principle explaining the concept clearly for NEET students in simple steps as per rationalized syllabus.

Ref: NCERT Chemistry Textbook - Latest Edition for Academic Session 2026-27 (Rationalized Textbook for Class XI and XII)Topic: Mole concept, atomic structure, chemical formulas like H₂O, CO₂, CH₃CH₂NH₂ and periodic trends.

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CHEMISTRY

What is the oxidation number of Mn in KMnO₄ ?

K is +1, O is -2. Sum is zero: +1 + x + 4(-2) = 0, 1 + x - 8 = 0, x = +7 . This follows from latest NCERT 2026-27 principle explaining the concept clearly for NEET students in simple steps as per rationalized syllabus.

Ref: NCERT Chemistry Textbook - Latest Edition for Academic Session 2026-27 (Rationalized Textbook for Class XI and XII)Topic: Mole concept, atomic structure, chemical formulas like H₂O, CO₂, CH₃CH₂NH₂ and periodic trends.

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CHEMISTRY

What is the formal charge on the carbon atom in the CO molecule?

In CO, carbon has 1 triple bond (6 electrons) and 1 lone pair (2 electrons). Formal charge = 4 - 2 - 1/2 × 6 = -1. This follows from latest NCERT 2026-27 principle explaining the concept clearly for NEET students in simple steps as per rationalized syllabus.

Ref: NCERT Chemistry Textbook - Latest Edition for Academic Session 2026-27 (Rationalized Textbook for Class XI and XII), Chapter: Electrochemistry (Latest NCERT 2026-27), Topic: Faraday's laws, charge required to reduce Al³⁺, 3F = 3 × 96500 C

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PHYSICS

An electron moves at 6.5 × 10⁶m/s perpendicular to a field of 0.2 T . What is the radius of its path? (Mass = 9.1 × 10⁻³

Given: An electron moves at 6.5 × 10⁶m/s perpendicular to a field of 0.2 T . What is the radius of its path? (Mass = 9.1 × 10⁻³¹kg, charge = 1.6 × 10⁻¹⁹C ) Formula: r = mv/qB. Substitution & Calculation: r = frac9.1 × 10⁻³¹ × 6.5 × 10⁶¹.6 × 10⁻¹⁹ × 0.2 = frac5.915 × 10⁻²⁴³.2 × 10⁻²⁰= 1.848 × 10⁻⁴m approx 0.0185 cm . Final Result: The computed value matches expected outcome and confirms correct choice as per latest NCERT 2026-27.

Ref: NCERT Physics Textbook - Latest Edition for Academic Session 2026-27 (Rationalized Textbook for Class XI and XII, continuing as per NCERT advisory for 2026-27),Topic: Fundamental laws, definitions and applications as per latest NCERT. The section explains governing laws, formulas like μ₀ = 4π.

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CHEMISTRY

For N₂(g) + 2O₂(g) 2NO₂(g), K_c = 0.01 at 500 K. What is K_c for the reverse reaction?

Given: For N₂(g) + 2O₂(g) 2NO₂(g), K_c = 0.01 at 500 K. What is K_c for the reverse reaction? Formula: For reverse reaction 2NO₂(g) N₂(g) + 2O₂(g), K_c' = 1/K_c = 1/0.01 = 100 .. Substitution: Substituting given values into formula as per NCERT 2026-27 method. Calculation: Simplifying step by step with proper SI units like m/s², J kg⁻¹ K⁻¹, 10⁻⁵, A m⁻¹ etc. Final Result: The computed value matches expected outcome and confirms correct choice as per latest NCERT 2026-27.

Ref: NCERT Chemistry Textbook - Latest Edition for Academic Session 2026-27 (Rationalized Textbook for Class XI and XII)Topic: Mole concept, atomic structure, chemical formulas like H₂O, CO₂, CH₃CH₂NH₂ and periodic trends.

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PHYSICS

A spring of k = 250 N/m has a 2.5 kg mass. If E = 1.25 J, what is the amplitude?

Given: A spring of k = 250 N/m has a 2.5 kg mass. If E = 1.25 J, what is the amplitude? Formula: Total energy: E = 1/2 k A². Substitution & Calculation: 1.25 = 0.5 × 250 × A² Rightarrow 1.25 = 125 A² Rightarrow A² = 0.01 Rightarrow A = 0.1 m . Final Result: The computed value matches expected outcome and confirms correct choice as per latest NCERT 2026-27.

Ref: NCERT Physics Textbook - Latest Edition for Academic Session 2026-27 (Rationalized Textbook for Class XI and XII, continuing as per NCERT advisory for 2026-27),Topic: Fundamental laws, definitions and applications as per latest NCERT. The section explains governing laws, formulas like μ₀ = 4π.

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PHYSICS

A gas occupies 5.6 litres at STP. How many moles of the gas are present? (Molar volume at STP = 22.4 litres)

Given: A gas occupies 5.6 litres at STP. How many moles of the gas are present? (Molar volume at STP = 22.4 litres) Formula: Number of moles (μ) = fracVolumeMolar volume. Substitution & Calculation: μ = 5.6/22.4 = 0.25 mol. Final Result: The computed value matches expected outcome and confirms correct choice as per latest NCERT 2026-27.

Ref: NCERT Physics Textbook - Latest Edition for Academic Session 2026-27 (Rationalized Textbook for Class XI and XII, continuing as per NCERT advisory for 2026-27),Topic: Fundamental laws, definitions and applications as per latest NCERT. The section explains governing laws, formulas like μ₀ = 4π.

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PHYSICS

An electron is accelerated through 50 V . What is its de Broglie wavelength? (Take h = 6.63 × 10⁻³⁴J s, m_e = 9.11 × 10⁻

Given: An electron is accelerated through 50 V . What is its de Broglie wavelength? (Take h = 6.63 × 10⁻³⁴J s, m_e = 9.11 × 10⁻³¹kg, e = 1.6 × 10⁻¹⁹C ) Formula: K = e V = 1.6 × 10⁻¹⁹ × 50 = 8.0 × 10⁻¹⁸J. Substitution & Calculation: p = √2 m K = √2 × 9.11 × 10⁻³¹ × 8.0 × 10⁻¹⁸approx 3.816 × 10⁻²⁴kg m/s . lambda = h/p = frac6.63 × 10⁻³⁴³.816 × 10⁻²⁴approx 1.737 × 10⁻¹⁰m = 0.1737 nm . Final Result: The computed value matches expected outcome and confirms correct choice as per latest NCERT 2026-27.

Ref: NCERT Physics Textbook - Latest Edition for Academic Session 2026-27 (Rationalized Textbook for Class XI and XII, continuing as per NCERT advisory for 2026-27),Topic: Fundamental laws, definitions and applications as per latest NCERT. The section explains governing laws, formulas like μ₀ = 4π.

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PHYSICS

A square loop of side 26 cm rotates at 12 rad/s in a 0.3 T field. What is the maximum emf induced?

Given: A square loop of side 26 cm rotates at 12 rad/s in a 0.3 T field. What is the maximum emf induced? Formula: A = (0.26)² = 0.0676 m². Substitution & Calculation: ε_0 = N B A omega = 1 × 0.3 × 0.0676 × 12 = 0.24336 V approx 0.243 V . Final Result: The computed value matches expected outcome and confirms correct choice as per latest NCERT 2026-27.

Ref: NCERT Physics Textbook - Latest Edition for Academic Session 2026-27 (Rationalized Textbook for Class XI and XII, continuing as per NCERT advisory for 2026-27), Chapter: Electromagnetic Induction (Latest NCERT 2026-27), Topic: Rotating coil, maximum emf ε₀ = NBAω, N = 300, B = 0.07 T, A = 0.012 m². The section explains governing laws, formulas like μ₀ = 4π × 10⁻⁷ T·m/A, SI.

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PHYSICS

A wire of length 2.2 m carrying 3.5 A is at 60° to a magnetic field of 0.2 T . What is the force on the wire?

Given: A wire of length 2.2 m carrying 3.5 A is at 60° to a magnetic field of 0.2 T . What is the force on the wire? Formula: Force F = I l B sin θ. Substitution & Calculation: F = 3.5 × 2.2 × 0.2 × sin 60° = 7.7 × 0.2 × 0.866 = 1.3336 approx 1.33 N . Final Result: The computed value matches expected outcome and confirms correct choice as per latest NCERT 2026-27.

Ref: NCERT Physics Textbook - Latest Edition for Academic Session 2026-27 (Rationalized Textbook for Class XI and XII, continuing as per NCERT advisory for 2026-27),Topic: Fundamental laws, definitions and applications as per latest NCERT. The section explains governing laws, formulas like μ₀ = 4π.

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