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Railway Science Practice Set 21 – 15 Bilingual Questions with Detailed Explanations

This published practice set contains 15 questions for competitive-exam preparation. Preview a few questions below, then start the full quiz to record your attempt. Answers and detailed explanations remain inside the submitted-attempt workflow so the preview does not reveal the solution before practice.

Sample Questions from Railway Science Practice Set 21 – 15 Bilingual Questions with Detailed Explanations

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Q1. A force of 50 N acts on a body and displaces it by 6 m in a direction making an angle of 60° with the force. How much work is done by the force?

50 N का बल किसी पिंड पर कार्य करता है और पिंड का विस्थापन 6 m है। बल और विस्थापन के बीच 60° का कोण है। बल द्वारा किया गया कार्य कितना होगा?

A. 150 J
150 जूल
B. 300 J
300 जूल
C. 50 J
50 जूल
D. 600 J
600 जूल

Q2. Which cells of the pancreas secrete insulin?

अग्न्याशय की कौन-सी कोशिकाएँ इंसुलिन का स्राव करती हैं?

A. Alpha cells
अल्फा कोशिकाएँ
B. Beta cells
बीटा कोशिकाएँ
C. Delta cells
डेल्टा कोशिकाएँ
D. Acinar cells
एसिनर कोशिकाएँ

Q3. Which substance is formed at the cathode during the electrolysis of molten sodium chloride?

पिघले हुए सोडियम क्लोराइड के विद्युत अपघटन के दौरान कैथोड पर कौन-सा पदार्थ बनता है?

A. Chlorine gas
क्लोरीन गैस
B. Hydrogen gas
हाइड्रोजन गैस
C. Sodium metal
सोडियम धातु
D. Sodium hydroxide
सोडियम हाइड्रॉक्साइड

Q4. Two resistors of 4 Ω and 12 Ω are connected in parallel. What is their equivalent resistance?

4 Ω और 12 Ω के दो प्रतिरोधकों को समानांतर क्रम में जोड़ा गया है। उनका तुल्य प्रतिरोध कितना होगा?

A. 16 Ω
16 Ω
B. 8 Ω
8 Ω
C. 4 Ω
4 Ω
D. 3 Ω
3 Ω

Q5. Which nitrogenous waste is the major excretory product in adult humans?

वयस्क मनुष्यों में प्रमुख नाइट्रोजनयुक्त उत्सर्जी पदार्थ कौन-सा है?

A. Urea
यूरिया
B. Ammonia
अमोनिया
C. Uric acid only
केवल यूरिक अम्ल
D. Carbon monoxide
कार्बन मोनोऑक्साइड

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