Only 1% of the incident lights are... | ICAR JRF/SRF 2024 | Agrigyan

73

ICAR JRF 29 Jun 2024Shift 1

MCQ (Single Correct) +4 −1

Only 1% of the incident lights are transmitted in a pectin solution. What will be the absorbance value?

99 0 1 2 Correct

Beer-Lambert Law & Absorbance Calculation:
Formula:

$$A = -\log_{10}(T) = \log_{10}\left(\frac{I_0}{I}\right) = \log_{10}\left(\frac{100}{\%T}\right)$$

where $A$ is absorbance (optical density) and $T$ is fractional transmittance.

Calculation:
Transmittance $\%T = 1\% \implies T = 0.01$.

$$A = -\log_{10}(0.01) = -\log_{10}(10^{-2}) = -(-2) = 2$$

Conclusion: Absorbance value is 2 (Option 4).

Correct option: (4) 2

Explanation not matching this question? क्या व्याख्या इस प्रश्न से मेल नहीं खा रही? Report

Want to practice this paper in exam conditions? क्या आप परीक्षा जैसे माहौल में अभ्यास करना चाहते हैं? Test yourself in 5-question batch format with timer and hidden answers. 5-प्रश्नों के बैच फॉर्मैट, टाइमर और छिपे उत्तरों के साथ खुद को परखें।

Start Practice Mode → प्रैक्टिस टेस्ट मोड शुरू करें →

General Agriculture

6 Topics

Agronomy, Tillage & Field Crop Production Agricultural Entomology, Nematology & Crop Pr Soil Science, Plant Nutrition & Reclamation Cell Biology, Plant Physiology & Biochemistry Agricultural Meteorology & Climate Science Crop Genetics, Plant Breeding & IPR

Engineering Properties & Quality of Biomateri

14 Topics

Physical, Gravimetric & Aerodynamic Propertie Fluid Dynamics & Vapour Compression Steady & Unsteady State Heat Conduction Convective Heat Transfer & Psychrometrics Sorption Thermodynamics & Moisture States Rheological & Textural Properties Food Extrusion Cooking Technology Grain Storage Physics & Pressure Distribution Active Thermal & Dielectric Properties Design of Grain Cleaners & Cyclones Optical Properties & Food Quality Grading Membrane & Physical Separation Thermal Processing Kinetics Design of Crop Dryers & Aeration Systems

Heat & Mass Transfer

7 Topics

Design of Crop Dryers & Aeration Systems Plant Location & Layout Optimization Storage Entomology & Grain Fumigation Computer-Aided Design & Machine Elements Design of Grain Cleaners & Cyclones Advanced Non-Thermal Processing Food Processing Wastewater Treatment

Post Harvest Unit Operations

8 Topics

Size Reduction & Mechanical Expression Membrane & Physical Separation Thermal Processing Kinetics Grain Storage Structures & Preservation Grain Cleaning & Separation Operations Cold Chain Management & Modified Atmosphere Grain Milling & Hulling Technology Grain Storage Physics & Pressure Distribution

Process Technology & Machinery

7 Topics

Data Logging & Virtual Instrumentation Network Planning Techniques Membrane & Physical Separation Food Extrusion Cooking Technology Cold Chain Management & Modified Atmosphere Grain Wet Milling & Industrial Bioprocesses Project Feasibility & Financial Appraisal

Design of Processing Machinery

3 Topics

Computer-Aided Design & Machine Elements Food Packaging Materials & Barrier Polymers Bulk Material Handling & Elevators

Material Handling, Packaging & Transport

3 Topics

Anaerobic Industrial Effluent Processing Process Transducers & Sensors Artificial Intelligence & Automation

Processing and Food Engineering- ICAR JRF/SRF 2024

120 Questions Bilingual

RPSC Agriculture Exams

5 Exams

Food Safety Officer Assistant Agriculture Officer Agriculture Officer RPSC Agriculture Research Officer RPSC AARO

RSSB Agriculture Exams

1 Exam

RSSB Agriculture Supervisor

National & PG Entrances

4 Exams

ICAR AIEEA PG CUET UG Rajasthan Agriculture Pre-PG

ICAR JRF/SRF Active