Test-7/ Education Venue Smart Classes Khunti

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  • 1/12 Questions

    शीतल पेय पधार्थों में किस  अम्ल का प्रयोग किया जाता है?

    • कार्बोनिक अम्ल
    • एसिटिक अम्ल
    • बोरिक अम्ल
    • फोरमिक अम्ल
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Test-7/ Education Venue Smart Classes Khunti - Quiz

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  • 2. 

    किन लेंसों को अभिसारी लेंस कहा जाता है?

    • उत्तल

    • अवतल

    • गोलीय

    • अभियोतल

    Correct Answer
    A. उत्तल
  • 3. 

    LASER का विस्तार है-

    • LIGHT AMPLICATION BY STIMULATED EMISSION OF REFLECTION

    • LIGHT AMPLIFIER BY STUNNING EMERGENCY RADIATION

    • LIGHT AMPLICATION BY STIMULATED EMISSION OF RADIATION

    • इन में से कोई नहीं

    Correct Answer
    A. LIGHT AMPLICATION BY STIMULATED EMISSION OF RADIATION
    Explanation
    The correct answer is "LIGHT AMPLICATION BY STIMULATED EMISSION OF RADIATION". This is because LASER stands for "Light Amplification by Stimulated Emission of Radiation".

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  • 4. 

    ओम के नियमानुसार प्रवाहित धरा किसके समानुपाती होता है?

    • प्रतिरोध के

    • विभवान्तर के

    • चालकता के

    • प्रतिरोधता के

    Correct Answer
    A. विभवान्तर के
    Explanation
    According to Ohm's law, the current flowing through a conductor is directly proportional to the potential difference across it. This means that the current is equal to the potential difference divided by the resistance. Therefore, the correct answer is "विभवान्तर के" (potential difference).

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  • 5. 

    शक्ति का SI  मात्रक क्या होता है?

    • न्यूटन

    • कैलोरी

    • वाट

    • वाल्ट

    Correct Answer
    A. वाट
    Explanation
    The SI unit of power is the watt. Power is the rate at which work is done or energy is transferred or converted. It is measured in watts, which are equal to one joule per second.

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  • 6. 

    सूर्य का निकटम तारा मन जाता है-

    • ध्रुव तारे को

    • गेनीमेड को

    • प्रोक्सिमा सेंचुरी को

    • टाइटन को

    Correct Answer
    A. प्रोक्सिमा सेंचुरी को
    Explanation
    The correct answer is "प्रोक्सिमा सेंचुरी को". This is because Proxima Centauri is the closest star to the Sun. It is located about 4.24 light-years away from the Sun and is part of the Alpha Centauri system. Proxima Centauri is a red dwarf star and is too faint to be seen with the naked eye from Earth. However, it is still considered the closest star to our solar system.

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  • 7. 

    विधुत धरा का SI मात्रक क्या होता है?

    • एम्पेयर

    • वाल्ट

    • ओम

    • महो

    Correct Answer
    A. एम्पेयर
    Explanation
    The SI unit of electric current is ampere (एम्पेयर).

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  • 8. 

    हाइड्रोजन के समस्थ्निकों  की संख्या कितनी होती है?

    • 2

    • 1

    • 3

    • 4

    Correct Answer
    A. 3
    Explanation
    The question is asking for the number of isotopes of hydrogen. Hydrogen has three isotopes: protium (1H), deuterium (2H), and tritium (3H). Therefore, the correct answer is 3.

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  • 9. 

    आलू किसका महत्वपूर्ण उद्धरण है?

    • प्रकंद का

    • सल्क्कंद का

    • धन्कंद का

    • स्कन्दकन्द का

    Correct Answer
    A. स्कन्दकन्द का
  • 10. 

    किस रंग के प्रकाश की चाल सर्वाधिक होती है?

    • लाल

    • नीला

    • बैगीनी

    • स्वेत

    Correct Answer
    A. लाल
  • 11. 

    फ्यूज का तार किसका मिश्र धातु का प्रयोग किया जाता है?

    • लेड और सीसा

    • तम्बा और जस्ता

    • टिन और सीसा

    • ताम्बा और सीसा

    Correct Answer
    A. लेड और सीसा
    Explanation
    The correct answer is "लेड और सीसा" because a fuse wire is made by combining lead and tin.

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  • 12. 

    फेरस सलफेट का सामान्य नाम क्या है?

    • नीला थोथा

    • हरा थोथा

    • स्वेत कसिश

    • फिटकिरी

    Correct Answer
    A. हरा थोथा

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  • Current Version
  • Jul 22, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Feb 11, 2015
    Quiz Created by
    ANANDEVS
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