Cover Hook: Curled edge of the end/lid tucked into the seam.
Body Hook: Flanged edge of the can body folded down into the seam.
To guarantee a hermetic seal that prevents post-process microbial leaker spoilage, the minimum seam overlap (OL) between the cover hook and body hook must be at least $55\% - 60\%$ (internationally recognized minimum standard: $60\%$ overlap).
Correct Option: Option 2 (60%).
Explanation not matching this question?क्या व्याख्या इस प्रश्न से मेल नहीं खा रही?Report
2
ICAR JRF Fish Processing Technology 29 Jun 2024Shift 1
Marine seafoods (shrimp, crab, tuna, salmon) are rich in sulfur-containing amino acids (cysteine, methionine) that thermal retorting breaks down into volatile hydrogen sulfide ($H_2S$).
Hydrogen sulfide reacts with unprotected tinplate iron to form unsightly black iron sulfide ($FeS$) stains.
Role of Zinc Oxide: Sulfur-resistant (SR) lacquers incorporate Zinc Oxide ($ZnO$) powder. During processing, $ZnO$ reacts with $H_2S$ to produce Zinc Sulfide ($ZnS$), which is completely white and invisible, preventing dark sulfur staining.
Correct Option: Option 2 (Zinc Oxide).
Explanation not matching this question?क्या व्याख्या इस प्रश्न से मेल नहीं खा रही?Report
Report Issue / Suggest Correctionत्रुटि रिपोर्ट / संशोधन सुझाव
No official replies published yet for this questionइस प्रश्न पर अभी कोई आधिकारिक समाधान प्रकाशित नहीं है
Have an objection, typo, or doubt? Submit a report in Tab 1. Our subject experts will audit the question and publish the official resolution here.यदि आपको इस प्रश्न या उत्तर कुंजी में कोई आपत्ति है, तो 'त्रुटि रिपोर्ट' टैब से विवरण भेजें। हमारी विषय विशेषज्ञ टीम समीक्षा कर आधिकारिक समाधान प्रकाशित करेगी।