Science Diagnostic Assessment

Grade 12 | 10 Questions | 30 Minutes

Instructions

* Student information must be exactly the same. Please check for correct spelling, spacing, and capitalization. Otherwise, accurate diagnosis and evaluation will not be possible.

* After 15 minutes, the session will automatically close and your results will be submitted.

Student Information

Name (English Only) * Email *

Science Diagnostic Test - Grade 12 ⏰ Time Remaining: 30:00

1 2 3 4 5 6 7 8 9 10

Question 1 / 10

Quantum Phenomena ⭐ Easy • 2 points

Observe the double-slit experiment pattern below. What does this interference pattern demonstrate about the nature of light?

A Light exhibits wave-particle duality, behaving as both waves and particles B Light is purely a particle phenomenon C The slits are defective and creating shadows D Light travels in straight lines only

Question 2 / 10

Organic Chemistry ⭐ Easy • 2 points

Classify these organic compounds based on their functional groups:

A 1: Alcohol, 2: Ketone, 3: Carboxylic acid, 4: Ester B 1: Ether, 2: Aldehyde, 3: Ester, 4: Ketone C 1: Ketone, 2: Alcohol, 3: Ether, 4: Carboxylic acid D 1: Aldehyde, 2: Ester, 3: Alcohol, 4: Amine

Question 3 / 10

Nuclear Physics ⭐ Easy • 2 points

A radioactive sample has a half-life of 5730 years (Carbon-14). If you start with 100g, how much remains after 11,460 years?

A 50 grams B 25 grams C 12.5 grams D 75 grams

Question 4 / 10

Molecular Biology ⭐⭐ Medium • 3 points

Based on this DNA gel electrophoresis result, what can you infer about the DNA samples?

A Samples 1 and 3 have identical DNA banding patterns, suggesting they're from the same source B All samples contain the same amount of DNA C Sample 2 has larger DNA fragments than the others D The gel electrophoresis failed to separate the DNA

Question 5 / 10

Chemical Equilibrium ⭐⭐ Medium • 3 points

For the Haber process: N₂(g) + 3H₂(g) ⇌ 2NH₃(g) + heat, predict what happens when temperature is increased.

N₂(g) + 3H₂(g) ⇌ 2NH₃(g) ΔH = -92 kJ/mol

Temperature (°C)	200	300	400	500
% NH₃ at equilibrium	89.9	71.0	47.0	26.4
Kc value	6.5 × 10²	4.3 × 10⁻¹	1.6 × 10⁻⁴	1.5 × 10⁻⁵

A More NH₃ forms because reactions speed up at higher temperature B Equilibrium shifts left (reverse reaction favored), decreasing NH₃ yield C No change in equilibrium position D The reaction stops completely

Question 6 / 10

Astronomy ⭐⭐ Medium • 3 points

Analyze the Hertzsprung-Russell diagram below. What is the relationship between stellar temperature and luminosity for main sequence stars?

A Random distribution with no correlation B Inverse relationship: cooler stars are more luminous C Direct relationship: hotter stars are generally more luminous D All stars have the same luminosity regardless of temperature

Question 7 / 10

Gene Expression ⭐⭐ Medium • 3 points

What is the cause-and-effect relationship between DNA methylation and gene expression?

A Methylation has no effect on gene expression B DNA methylation at promoter regions typically silences gene expression by blocking transcription factors C Methylation always increases gene expression D Gene expression causes DNA methylation

Question 8 / 10

Biotechnology ⭐⭐⭐ Hard • 4 points

Design an investigation to determine if a new CRISPR-Cas9 gene edit successfully inserted a fluorescent protein gene. Which combination of methods would provide the most conclusive evidence?

Available Methods:

PCR amplification - Amplify target region
DNA sequencing - Read exact DNA sequence
Fluorescence microscopy - Detect protein expression
Western blot - Detect protein presence
Flow cytometry - Quantify fluorescent cells
RT-qPCR - Measure mRNA levels
Immunofluorescence - Localize protein
Southern blot - Detect DNA insertion

Goal: Confirm successful insertion AND expression of fluorescent protein gene

A Only fluorescence microscopy (Method 3) B Methods 1, 2, 3, and 5: PCR to confirm insertion, sequencing to verify correct sequence, microscopy to visualize, and flow cytometry to quantify C Methods 4 and 7: Western blot and immunofluorescence only D Method 8 only: Southern blot

Question 9 / 10

Special Relativity ⭐⭐⭐ Hard • 4 points

Evaluate Einstein's model of time dilation. A spacecraft travels at 0.8c. Which prediction about time passage is correct according to the Lorentz transformation?

A Time passes equally for both Earth and spacecraft B 1 hour on the spacecraft equals 0.6 hours on Earth C 1 hour on the spacecraft equals 1.667 hours on Earth (time dilation factor γ = 1.667) D Time stops completely on the spacecraft

Question 10 / 10

Thermodynamics ⭐⭐⭐ Hard • 4 points

A perpetual motion machine claims to produce 1000 J of work while absorbing only 800 J of heat from a single reservoir. Using scientific reasoning and the laws of thermodynamics, evaluate this claim.

A Valid: The machine is highly efficient B Valid: Modern technology can exceed 100% efficiency C Invalid: Violates both the first law (energy conservation) and second law (no heat engine can be >100% efficient) D Need more data to evaluate

진단 평가 결과

0 /30점

레벨 판정중...

🌟 강점 영역

📚 보완 필요 영역

💡 개인 맞춤 피드백

분석 중입니다...

📊 상세 결과

프로그램 추천

이 수준에 맞는 학습지를 매주 받아보세요

CCSS 기반 맞춤 워크시트 매주 배달
수학 · 과학 · 영어 3과목 (영어 출제)
월 ₩29,000 — 첫 주 무료 체험

주간 학습지 알아보기 → 블로그에서 더 알아보기