चिकित्सा स्नातकोत्तर प्रवेश (MECEE-PG) MD / MS / MDS प्रवेश परीक्षा तयारी
चिकित्सा स्नातकोत्तर प्रवेश (MECEE-PG) – MD / MS / MDS प्रवेश परीक्षा
MECEE-PG – MD/MS/MDS · MECEE-PG (MD/MS/MDS)
२,८६५ प्रश्न उपलब्ध। मोड छान्नुहोस्:
MD/MS/MDS प्रवेश: प्रश्न र उत्तर
सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ३ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।
सही: ० / ०
-
If the mean haemoglobin of a group is 50 units and the standard deviation is 5 units, the coefficient of variation is:
सही उत्तर: घ) 10%
CV = SD/mean × 100 = 5/50 × 100 = 10%. CV allows comparison of variability between variables measured in different units.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Food poisoning presenting with vomiting within 1–6 hours of eating contaminated custard or milk products is most likely caused by:
सही उत्तर: ग) Staphylococcus aureus
Staphylococcal enterotoxin is preformed, so symptoms appear within a few hours, mainly vomiting. Salmonella food poisoning has a longer incubation of about 12–24 hours.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
The most specific bacteriological indicator of recent faecal contamination of drinking water is:
सही उत्तर: ख) Escherichia coli
Thermotolerant E. coli is exclusively faecal in origin and does not survive long in water, indicating recent pollution. Spores of Clostridium perfringens persist and indicate remote contamination.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
The phosphatase test of milk is used to assess:
सही उत्तर: क) Adequacy of pasteurisation
Alkaline phosphatase is destroyed by proper pasteurisation, so its presence shows inadequate heating or contamination with raw milk. Bacterial quality of milk is assessed by the methylene blue reduction test.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
In the HTST (flash) method of pasteurisation, milk is heated to:
सही उत्तर: घ) About 72 °C for 15 seconds
HTST pasteurisation uses about 71.7–72 °C for at least 15 seconds followed by rapid cooling. 63–66 °C for 30 minutes is the holder (vat) method.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
The usual conditions for sterilisation by autoclave are:
सही उत्तर: ग) 121 °C at 15 lb/in² for 15 minutes
Saturated steam at 121 °C (15 lb/in²) for 15 minutes kills bacteria and spores. 160 °C for about 2 hours is a hot air oven condition; 63 °C for 30 minutes is holder pasteurisation.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Temporary hardness of water is caused by:
सही उत्तर: ख) Bicarbonates of calcium and magnesium
Bicarbonate (temporary) hardness can be removed by boiling or by adding lime (Clark's method). Sulphates and chlorides cause permanent hardness.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
A cross-sectional study primarily measures:
सही उत्तर: क) Prevalence
A cross-sectional survey examines exposure and disease at a single point in time, giving prevalence. Incidence requires following people over time.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
An epidemic curve showing a single sharp rise and fall, with all cases occurring within one incubation period, suggests:
सही उत्तर: घ) A point-source (single exposure) epidemic
In a point-source epidemic all cases share a single exposure, so they cluster within one incubation period. Propagated epidemics show a gradual rise with successive waves from person-to-person spread.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Which of the following is NOT a component of the Human Development Index (HDI)?
सही उत्तर: ग) Infant mortality rate
HDI combines health (life expectancy at birth), education (mean and expected years of schooling) and standard of living (GNI per capita). Infant mortality is a PQLI component, not an HDI one.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
यी अभ्यास प्रश्न हुन्, आधिकारिक प्रश्न होइनन्। पाठ्यक्रम, विज्ञापन र नतिजाका लागि सम्बन्धित निकायको आधिकारिक वेबसाइट हेर्नुहोस्। उत्तरमा गल्ती भेटे प्रश्नमुनिको "टिप्पणी / गल्ती रिपोर्ट" मा लेख्नुहोस्।
नमस्ते! पाठ्यक्रम, सामान्य ज्ञान, भाषा परीक्षा वा कुनै प्रश्नको उत्तर बुझ्न सोध्नुहोस्।
AI ले गल्ती गर्न सक्छ। महत्वपूर्ण कुरा आधिकारिक स्रोतमा जाँच्नुहोस्।