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Railway Science Practice Set 1 – 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 1 – 15 Bilingual Questions with Detailed Explanations

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Q1. Which part of the human brain is primarily responsible for maintaining posture, balance and coordination of voluntary muscular movements?

मानव मस्तिष्क का कौन-सा भाग मुख्य रूप से शरीर की मुद्रा, संतुलन तथा ऐच्छिक पेशीय गतिविधियों के समन्वय के लिए उत्तरदायी है?

A. Cerebrum
सेरिब्रम (प्रमस्तिष्क)
B. Cerebellum
सेरिबेलम (अनुमस्तिष्क)
C. Medulla oblongata
मेडुला ऑब्लोंगाटा
D. Hypothalamus
हाइपोथैलेमस

Q2. Which gas is evolved when zinc reacts with dilute hydrochloric acid?

जब जिंक तनु हाइड्रोक्लोरिक अम्ल के साथ अभिक्रिया करता है, तब कौन-सी गैस निकलती है?

A. Oxygen
ऑक्सीजन
B. Hydrogen
हाइड्रोजन
C. Chlorine
क्लोरीन
D. Carbon dioxide
कार्बन डाइऑक्साइड

Q3. The power of a convex lens is +5 dioptres. What is its focal length?

एक उत्तल लेंस की क्षमता +5 डायोप्टर है। उसकी फोकस दूरी कितनी होगी?

A. 5 cm
5 सेमी
B. 10 cm
10 सेमी
C. 20 cm
20 सेमी
D. 50 cm
50 सेमी

Q4. Which component of blood is mainly responsible for blood clotting?

रक्त का कौन-सा घटक मुख्य रूप से रक्त के थक्के जमने के लिए उत्तरदायी है?

A. Red blood cells
लाल रक्त कोशिकाएँ
B. White blood cells
श्वेत रक्त कोशिकाएँ
C. Platelets
प्लेटलेट्स
D. Plasma
प्लाज्मा

Q5. Which phenomenon is primarily responsible for the blue colour of the clear sky?

स्वच्छ आकाश के नीले दिखाई देने के लिए मुख्य रूप से कौन-सी घटना उत्तरदायी है?

A. Reflection
परावर्तन
B. Refraction
अपवर्तन
C. Dispersion
वर्ण विक्षेपण
D. Scattering of light
प्रकाश का प्रकीर्णन

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