Upload your question key, snap student answer sheets, and let GradeCrow AI transcribe handwriting and award fair, rubric-anchored marks—with 1-tap teacher override control.
Designed for Indian school teachers and college lecturers who want fast, objective grading without complex ML tools.
Take a photo of your printed question paper or board marking scheme, or select a preset template (CBSE Science, Physics, Chemistry, Indian History). GradeCrow automatically structures questions, step marks, and key concepts.
Snap student ruled notebooks or exam supplement papers directly with your phone camera, or upload photos/PDFs. Easily handles Indian student handwriting, ballpoint pen ink, and chemical equations.
Get step-wise mark breakdowns with student handwritten quotes cited as proof. Adjust marks in 1 tap (+0.5, -1.0) and export ready-to-use Excel/CSV marksheets.
Explore actual question papers, evaluated handwritten answer sheets, and class gradebooks.
State Ohm's Law (V = IR) and explain how wire length, cross-sectional area, and resistivity affect conductor resistance.
Explain reaction conditions, balanced formula for hydrated ferric oxide, and two prevention methods.
Define acid-base neutralization, provide equation (HCl + NaOH), and explain Milk of Magnesia [Mg(OH)2] action.
Q1: Ohm's Law and Resistance of a Conductor
Ohm's Law states that at constant temperature, current I is directly proportional to potential difference V (V = I * R).
Factors: 1. Length (R ∝ L) 2. Area of cross-section (R ∝ 1/A) 3. Material resistivity (R = ρ * L / A).
Q2: Rusting of Iron (Corrosion)
Iron reacts with oxygen and moisture to form rust: 4Fe(s) + 3O2(g) + 2xH2O(l) -> 2Fe2O3.xH2O.
Prevention: Galvanization (coating with zinc) and painting.
Q1: Ohm's Law
Current is proportional to voltage. V = I * R. Wire length and thickness affect resistance.
Q2: Rusting of Iron
Rusting happens in open air with rain: Iron + Oxygen + Water -> Rust. Prevented by painting.
*(Missed chemical stoichiometric formula 2Fe2O3.xH2O and resistivity factor ρ)*
Q1: Causes of the Revolt of 1857
• Political: Lord Dalhousie's 'Doctrine of Lapse' annexed Jhansi and Nagpur; annexation of Awadh outraged sepoys.
• Economic: Heavy land revenue (Zamindari) and destruction of traditional Indian weavers by British mill cloth.
• Immediate Cause: Enfield rifle greased cartridges offending Hindu and Muslim beliefs; revolt by Mangal Pandey.
Q2: Six Fundamental Rights (Indian Constitution)
Right to Equality (Art 14-18), Right to Freedom (Art 19-22), Right against Exploitation, Freedom of Religion, Cultural Rights, and Right to Constitutional Remedies (Art 32 - Heart and Soul of Constitution).
| Student Name | Roll No | Score | Percentage | Status |
|---|---|---|---|---|
| Aarav Sharma | CBSE-10-101 | 14.25 / 15.0 | 95.0% | PASSED (A1) |
| Ananya Sen | CBSE-10-201 | 13.75 / 15.0 | 91.7% | PASSED (A1) |
| Sneha Mukherjee | CBSE-10-105 | 13.25 / 15.0 | 88.3% | PASSED (A2) |
| Priya Patel | CBSE-10-102 | 9.50 / 15.0 | 63.3% | PASSED (B1) |
| Rohan Gupta | CBSE-10-108 | 8.75 / 15.0 | 58.3% | PASSED (B2) |
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