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Download PDF – RRB Lab Assistant PYQ Full Length Mock Test: Solved PYP CBT

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RRB Lab Assistant PYQ Full Length Mock Test: Solved PYP CBT
Q1. According to standard blood banking guidelines, donor blood must be routinely screened for which viral hepatitis markers prior to transfusion?
A) Hepatitis B surface Antigen (HBsAg) & Hepatitis C Virus (HCV)
B) Hepatitis D virus only
C) Hepatitis A & Hepatitis E
D) Hepatitis A antibodies only
Q1. ब्लड बैंक दिशानिर्देशों के अनुसार, रक्तदान के बाद रक्त की किस हेपेटाइटिस मार्कर के लिए अनिवार्य जांच की जाती है?
A) हेपेटाइटिस बी (HBsAg) और हेपेटाइटिस सी (HCV)
B) केवल हेपेटाइटिस डी
C) हेपेटाइटिस ए और हेपेटाइटिस ई
D) केवल हेपेटाइटिस ए
Answer: (A)
Transfusion-transmissible infections (TTIs) mandatory screening in India includes HBsAg, anti-HCV, anti-HIV 1/2, Syphilis, and Malaria.
रक्तदान के बाद रक्त को अनिवार्य रूप से हेपेटाइटिस बी (HBsAg) और हेपेटाइटिस सी (HCV) के लिए स्क्रीन किया जाता है।
Q2. Which solid selective culture medium is considered the standard for the primary isolation of Mycobacterium tuberculosis?
A) TCBS Agar
B) Lowenstein-Jensen (LJ) Medium
C) Blood Agar
D) MacConkey Agar
Q2. माइकोबैक्टीरियम ट्यूबरकुलोसिस के प्राथमिक संवर्धन के लिए कौन सा ठोस माध्यम मानक माना जाता है?
A) टीसीबीएस अगर
B) लोवेनस्टीन-जेन्सन (LJ) मीडियम
C) ब्लड अगर
D) मैककॉन्की अगर
Answer: (B)
Lowenstein-Jensen (LJ) medium, an egg-based medium containing malachite green, is standard for growing tubercle bacilli.
तपेदिक के जीवाणु को कल्चर करने के लिए लोवेनस्टीन-जेन्सन (LJ) माध्यम का उपयोग किया जाता है।
Q3. Which laboratory investigation CANNOT be performed on a serum sample and strictly requires anticoagulated plasma?
A) Serum Bilirubin estimation
B) Alkaline Phosphatase (ALP) assay
C) Coagulation Profile (Prothrombin Time / aPTT)
D) Serum Creatinine test
Q3. निम्नलिखित में से कौन सा प्रयोगशाला परीक्षण सीरम पर नहीं किया जा सकता और इसके लिए प्लाज्मा की आवश्यकता होती है?
A) सीरम बिलीरुबिन अनुमान
B) क्षारीय फॉस्फेटेज (ALP) परख
C) कोगुलेशन प्रोफाइल (प्रोथ्रोम्बिन टाइम / aPTT)
D) सीरम क्रिएटिनिन परीक्षण
Answer: (C)
During serum clotting, fibrinogen and factors II, V, and VIII are consumed, so coagulation studies strictly require citrated plasma.
सीरम में क्लॉटिंग कारक समाप्त हो जाते हैं, इसलिए कोगुलेशन प्रोफाइल (PT/aPTT) के लिए प्लाज्मा अनिवार्य है।
Q4. What is the recommended anticoagulant of choice for routine Complete Blood Count (CBC) and automated hematology cell counting?
A) 3.2% Sodium Citrate
B) Sodium Fluoride
C) Heparin sodium
D) K2 / K3 Dipotassium or Tripotassium EDTA
Q4. पूर्ण रक्त गणना (CBC) और हेमटोलॉजी सेल काउंटिंग के लिए पसंदीदा थक्कारोधी (Anticoagulant) कौन सा है?
A) 3.2% सोडियम साइट्रेट
B) सोडियम फ्लोराइड
C) हेपरिन सोडियम
D) K2 / K3 ईडीटीए (EDTA)
Answer: (D)
EDTA chelates calcium and preserves cellular morphology without altering cell size or causing platelet clumping.
सीबीसी और हेमटोलॉजी सेल काउंट के लिए ईडीटीए (EDTA) का उपयोग किया जाता है।
Q5. Platelet concentrates (Random Donor or Single Donor Platelets) must be stored in the blood bank at which temperature?
A) 20°C to 24°C with continuous gentle agitation
B) -18°C in a deep freezer
C) 2°C to 6°C in a refrigerator
D) 37°C in an incubator
Q5. ब्लड बैंक में प्लेटलेट कॉन्संट्रेट को किस तापमान पर संग्रहित किया जाना चाहिए?
A) 20°C से 24°C (लगातार धीरे-धीरे हिलाते हुए)
B) -18°C
C) 2°C से 6°C
D) 37°C
Answer: (A)
Platelets must be stored at 20°C to 24°C under continuous agitation in an incubator-agitator to preserve platelet function.
प्लेटलेट्स को 20°C से 24°C तापमान पर एगिटेटर में लगातार हिलाते हुए स्टोर किया जाता है।
Q6. In the Westergren method for determining ESR, what is the volumetric ratio of 3.8% sodium citrate anticoagulant to whole blood?
A) 1 part citrate to 9 parts blood (1:9 ratio)
B) 1 part citrate to 4 parts blood (1:4 ratio)
C) 1 part citrate to 1 part blood (1:1 ratio)
D) 1 part citrate to 2 parts blood (1:2 ratio)
Q6. वेस्टरग्रेन ईएसआर (ESR) विधि में 3.8% सोडियम साइट्रेट और रक्त का सही अनुपात क्या है?
A) 1 भाग साइट्रेट और 9 भाग रक्त (1:9)
B) 1 भाग साइट्रेट और 4 भाग रक्त (1:4)
C) 1:1 अनुपात
D) 1:2 अनुपात
Answer: (B)
Westergren ESR testing requires 1 volume of 3.8% sodium citrate mixed with 4 volumes of blood (1:4 ratio).
वेस्टरग्रेन ईएसआर के लिए साइट्रेट और रक्त का अनुपात 1:4 होता है।
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