This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 116701. |
सिद्ध कीजिए कि sec 210° = -2√3 |
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Answer» LHS = sec 210° = sec(180° + 30°) = – sec 30°= -2√3 = RHS |
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| 116702. |
सिद्ध कीजिए कि tan 225°= 1 |
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Answer» LHS = tan 225° = tan(180° + 45°) = tan 45° = 1 = RHS |
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| 116703. |
सिद्ध कीजिए कि cosec 225°= -√2 |
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Answer» LHS = cosec 225° = cosec(180° + 45° ) = – sec 45° = -√2 = RHS |
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| 116704. |
11/7 can be expressed in the form (A) 7 1/4 (B) 4 1/7 (C) 1 4/7 (D) 11 1/7 |
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Answer» The correct answer is (C) |
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| 116705. |
The line describing an angle of 750°, lies in:(A) First quadrant(B) Second quadrant(C) Third quadrant(D) Fourth quadrant |
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Answer» Answer is (A) First quadrant |
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| 116706. |
धातु तथा अधातु की जल से क्रिया लिखिये। |
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Answer» धातु-जल से सामान्य ताप पर क्रिया करके H2 गैस निकालती है। |
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| 116707. |
धातुओं की जल के साथ अभिक्रिया को दो उदाहरण द्वारा स्पष्ट कीजिए। |
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Answer» धातु जल के साथ क्रिया करके धातु हाइड्रॉक्साइड/ऑक्साइड तथा हाइड्रोजन गैस बनाते हैं। उदाहरण – (i) सोडियम धातु जल के साथ तीव्र गति से अभिक्रिया करके सोडियम हाइड्रॉक्साइड तथा” हाइड्रोजन गैस बनाता है। 2Na + 2H2O → 2NaOH + H2 (ii) मैग्नीशियम भाप या गर्म पानी के साथ क्रिया करके मैग्नीशियम ऑक्साइड तथा हाइड्रोजन गैस बनाता है। Mg + H2O → MgO + H2 |
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| 116708. |
What is mysterious and fearful? What phrase expresses this idea? |
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Answer» The phrase “ shadowy silent distance grew the iceberg too”. This means that while the ship was being built, God was making the iceberg that the ship crashed into, which feels something fearful and mysterious. It also symbolizes that nobody can escape the nature’s will taking its course. |
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| 116709. |
Two things became historical facts in navigation. What were they? |
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Answer» Two things which became historical are one of the largest, safest manmade conventions of its time, and Hardy presents a philosophical poem about fete’s inevitability and indifference through the eyes of nature, portraying the disaster by presenting the accident. The Titanic was supposed to be unsinkable because of the technology used to build it. But fate proved otherwise Man’s technology is no match against the forces of nature. |
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| 116710. |
सोडियम धातु का जल तथा ऑक्सीजन से क्रिया का रासायनिक समीकरण लिखिए। |
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Answer» सोडियम धातु की जल के साथ क्रिया – सोडियम धातु जल के साथ तीव्र गति से अभिक्रिया करके सोडियम हाइड्रॉक्साइड तथा हाइड्रोजन गैस बनाता है। 2Na + 2H2O → 2NaOH + H2 सोडियम धातु की ऑक्सीजन के साथ क्रिया – सोडियम कमरे के सामान्य ताप पर ऑक्सीजन से क्रिया करके सोडियम ऑक्साईड बनाता है। 4Na + O2 → 2Na2O |
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| 116711. |
धातु के संक्षारण की रोकथाम के लिए अपनाई जाने वाली विभिन्न विधियों का वर्णन कीजिए। |
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Answer» धातु के संक्षारण की रोकथाम की विभिन्न विधियाँ निम्नलिखित हैं – 1. पेंट का लेप चढ़ाकर – धातु की वस्तुओं की सतह पर पेंट लगाकर उसे क्षरण से बचाया जा सकता है। इसी कारण लोहे के फर्नीचर, लोहे के पुल, रेल के डिब्बे, बस, ट्रक आदि को पेंट किया जाता है। 2. ग्रीस या तेल लगाकर – नए औजारों जैसे – कैंची, चाकू, मशीन आदि पर ग्रीस या तेल लगाकर उन्हें क्षरण से बचाया जा सकता है। 3. गैल्वोनीकरण (धातु चढ़ाना) – लोहा को जंग से बचाने के लिए लोहे की चादर या अन्य पात्र को पिघले हुए जस्ते में डुबा देते हैं, जिसके कारण लोहे पर जस्ते की एक पतली परत जम जाती है। इस लोहे का उपयोग बाल्टी, टंकी आदि बनाने में किया जाता है। 4. इलेक्ट्रोप्लेटिंग (विद्युत लेपन) – कुछ धातु जैसे क्रोमियम, निकिल तथा टिन वायुमण्डल में उपस्थित ऑक्सीजन एवं नमी से प्रभावित नहीं होते हैं। लोहे का क्षरण रोकने के लिए उसके चारों ओर क्रोमियम या टिन की इलेक्ट्रोप्लेटिंग की जाती है। एल्युमिनियम को क्षरण से बचाने के लिए उसके ऊपर एल्युमिनियम ऑक्साइड का विद्युत लेपन कर दिया जाता है। 5. मिश्र धातु बनाकर – कभी-कभी एक धातु में दूसरी धातु या अधातु मिलाने पर वह अधिक कठोर, स्थायी तथा संक्षारण से सुरक्षित हो जाता है। स्टील, लोहा तथा कार्बन का मिश्रण मिश्र धातु है, जिसमें आसानी से जंग नहीं लगता है। |
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| 116712. |
What does he say about the ship’s qualities? |
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Answer» He says that ship has grown into a greater height and also the quality rendered being beautiful to look at, and also the degree of brightness in colour is also grown. |
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| 116713. |
The poet uses the word “grew” twice, What does he mean in each case? |
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Answer» Poet uses the word grew twice. Once he tells about the man-made ship, how it grew into a greater height and the quality of ship has also grown, whereas in second case, poet warns as and when science goes on growing nature also grows as big as the science and technology. |
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| 116714. |
In the first three lines the poet speaks of two things. What are they? |
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Answer» In the first three line the poet speaks about smart ship and iceberg. |
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| 116715. |
The Convergence of the Twain by Thomas Hardy About the Author: |
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Answer» Thomas Hardy was an English novelist and poet. A Victorian realist in the tradition of George Eliot, he was influenced both in his novels and in his poetry by romanticism. Like Dickens, he was highly critical of much in Victorian society, though Hardy focused more on declining rural society. While Hardy wrote poetry throughout his life and regarded himself primarily as a poet, his first collection was not published until 1898. Thomas Hardy was born in 1840 in Higher Bockhampton, a hamlet in the parish of Stinsford, where his father Thomas worked as a stonemason and local builder. Hardy’s family lacked the means of university education. His formal education ended at the age of 16 when he became apprenticed to James Hicke, a local architect. He remained preoccupied with his first wife’s death and tried to overcome his remorse by writing poetry. In 1910, Hardy had been awarded the Order of merit. |
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| 116716. |
The event that brought death and destruction was like play to someone. Which two lines say so? |
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Answer» ‘Till the spinner of the years. Said “Now!” and each one hears |
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| 116717. |
In describing the collision the poet has used three phrases and one word. Scan the poem and find them. |
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Answer» The three phrases are “In shadowy silent distance grew the iceberg too” The intimate welding of their later history. On being anon twain halves of one August event The word ‘consummation’ All these describes the collision. |
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| 116718. |
Consider the word “consummation”. What point of time in the short life of the ship was the consummation? a. When the ship stood in the dock in all its glory. b. When it began to leave and the passengers on the deck were cheered by the people on the ground. c. When it reached its maximum speed in the open sea. d. None of the above. |
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Answer» b. When it began to leave and the passengers on the deck were cheered by the people on the ground. |
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| 116719. |
धातुओं का संक्षारण क्या है? |
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Answer» कुछ धातुओं को नम हवा में रखने अथवा वर्षा ऋतु में पानी में पड़े रहने पर उनकी सतह पर एक प्रकार की भूरे रंग की तह (जंग या लेप) जम जाती है। इस प्रकार धातु कमजोर होती जाती है।इस क्रिया को धातु का संक्षारण कहते हैं। लोहे के ऊपर भूरे रंग की जंग लगना तथा जस्ते के ऊपर सफेद रंग की जंग लगना इसके उदाहरण हैं। |
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| 116720. |
मुक्त अवस्था में पाए जाने वाले किन्हीं दो धातुओं के नाम लिखिए। |
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Answer» सोना तथा चाँदी |
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| 116721. |
The Convergence of the Twain Summary In English |
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Answer» Thomas Hardy discusses about the cause of the disaster, the collision of the ship and the iceberg. The pairing of human technology and nature can be seen quite clearly in the poem with all the new technologies of humans set against the bigger force of nature. Poet is his first stanza tells that while the titanic was being built, nature too prepared against it. Creating a sense of menace in the lines ‘shadowy silent distance grew the iceberg too’. The unspoken force was predestined and unavoidable event premeditated by some hidden uncontrollable force. Though they both are opposite to one another they grew simultaneously they are coming closer to join, but no one could predict the future happenings. Both the Titanic and the iceberg grew without anyone ever knowing that they were signs of being purposefully created by the creator they are coming close by the paths in coincidence. They were being the two halves of the tragedy of one adjust event craving great importance and especially of highest social class who is unsympathetic to nature In the last stanza, fate is personified ‘spinner of the years’ which suggests that some force planned this purposefully, the fate decides ‘Now’ which is the time for collision, nothing can change it. “Consummation comes, and joins two hemispheres” gives the idea that human pride was shattered when the ship sank. The two hemispheres refer to either side of the world, the word ‘Jars’ could be the news filtering through and the families being devastated and also human pride being jarred because of those proud to see the ship leave and those waiting for it to arrive anxiously. Unfortunately, fate takes its own decision which is different from people’s expectation. |
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| 116722. |
धातुओं की ऑक्सीजन से अभिक्रिया को उदाहरण सहित स्पष्ट कीजिए। |
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Answer» धातु ऑक्सीजन के साथ क्रिया करके धातु ऑक्साइड बनाते हैं, उदाहरण – (i) सोडियम कमरे के सामान्य ताप पर ऑक्सीजन से क्रिया करके सोडियम ऑक्साइड बनाता है। 4Na +O2 → 2Na2O (ii) मैग्नीशियम का तार ऑक्सीजन की उपस्थिति में जलकर मैग्नीशियम ऑक्साइड (सफेद पाउडर) बनाता है। 2Mg +O2 → 2MgO |
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| 116723. |
किसी एक द्रव धातु का नाम लिखिए। |
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Answer» किसी एक द्रव धातु का नाम है पारा। |
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| 116724. |
मिश्र धातु क्या होती हैं? |
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Answer» दो या दो से अधिक धातुओं के समांगी मिश्रण को मिश्र धातु कहते हैं। ये धातुओं को उनकी पिघली हुई अवस्था में मिलाने पर बनती हैं। |
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| 116725. |
धातुओं की अघातवर्धनीयता तथा तन्यता के गुण का क्या अर्थ है? |
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Answer» धातुओं को पीटकर चादरों के रूप में परिवर्तित करने के गुण को अघातवर्धनीयता कहते हैं। तथा धातुओं को खींचकर तार के रूप में परिवर्तित करने के गुण को तन्यता कहते हैं। |
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| 116726. |
तवे की हैंडल में लकड़ी लगी होती है, क्यों? |
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Answer» लकड़ी ताप का कुचालक है। इसके पकड़ने से हाथ नहीं जलता। इसलिए तवे की हैंडल में लकड़ी लगी होती है। |
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| 116727. |
धातुकर्म से क्या समझते हैं? |
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Answer» धातुकर्म – किसी अयस्क से धातु की प्राप्ति तथा उसके शुद्धिकरण की विधि को धातुकर्म कहते हैं। |
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| 116728. |
खनिज तथा अयस्क में क्या अन्तर है? |
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Answer» खनिज वह पदार्थ है, जिसे जमीन के अन्दर खुदाई करके प्राप्त किया जाता है, परन्तु जिन खनिजों से धातुओं का निष्कर्षण सरलतापूर्वक किया जाता है, उन्हें अयस्क कहते हैं। |
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| 116729. |
लोहा, ताँबा तथा सोने के अयस्क देश में कहाँ पाये जाते हैं। |
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Answer» लोहा- बिहार, उड़ीसा, मध्य प्रदेश, तमिलनाडू, कर्नाटक, छत्तीसगढ़। |
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| 116730. |
बॉक्साइट किसका अयस्क है –(अ) सोडियम(ब) लोहा(स) एल्युमिनियम(द) कॉपर |
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Answer» सही विकल्प है (स) एल्युमिनियम |
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| 116731. |
इनमें से कौन सी सान्द्रण की विधि नहीं है?(अ) फेन प्लावन विधि(ब) चुम्बकीय पृथक्करण(स) निस्तापन(द) गुरुत्वीय पृथक्करण |
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Answer» सही विकल्प है (स) निस्तापन |
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| 116732. |
निम्नलिखित वस्तुओं में कौन-सी वस्तु संक्षारित हो सकती है –(अ) लकड़ी की मेज(ब) स्टील की कुर्सी(स) खुली स्थानों पर रखी लोहे की छड़(द) तेल लेपित लोहे की छड़ |
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Answer» सही विकल्प है (स) खुली स्थानों पर रखी लोहे की छड़ |
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| 116733. |
What are porins? What role do they play in diffusion? |
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Answer» Carrier proteins form porin channels in the outer membranes of plastids, mitochondria and some bacteria. The porin channels allow the molecules up to the size of small proteins to pass through molecule bound to the transport protein and thus allow facilitated diffusion. |
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| 116734. |
Give examples of the following :Tiger and the deer. |
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Answer» Predator and prey relationship |
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| 116735. |
Explain giving reasons why the tourists visiting Rohtang Pass or Mansarovar are advised to resume normal ‘active life’ only after a few days of reaching there. |
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Answer» Initially the person suffers from altitude sickness/nausea, fatigue and heart palpitation because of low oxygen availability and low atmospheric pressure. Gradually the body increases RBC production, decreasing binding capacity of Hb and increases the breathing rate to get acclimatised. |
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| 116736. |
Give examples of the following :Visiting flamingos and fishes in the estuarine water. |
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Answer» Interspecific competition. |
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| 116737. |
How have transgenic animals proved to be beneficial in:(i) Production of biological products?(ii) Chemical safety testing? |
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Answer» (i) Rosie–the transgenic cow, produced human proteins containing human αlactalbumin. Transgenic animals have been made to produce 2- 1-antitrypsin used to treat emphysema. (ii) Toxicity testing – Transgenic animals are more sensitive to toxic substances, so the results are obtained in less time. |
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| 116738. |
If in a pond there were 200 lotus plants last year and through reproduction 20 new plants are added, taking the current population to 220, what is the natality rate of the lotus for that year ? (a) 0.2 (b) 0.4 (c) 0.1 (d) 1.0 |
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Answer» Correct answer is (c) 0.1 |
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| 116739. |
State the role of pith in stem. |
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Answer» Pith stores the food material. |
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| 116740. |
In 1802, Peshwa ………….. signed the Subsidiary Alliance with the British. (a) Bajirao I (b) Sawai Madhavrao (c) Peshwa Nanasaheb (d) Bajirao II |
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Answer» Correct option is (d) Bajirao II |
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| 116741. |
Jamshedjee Tata started the manufacturing of steel at Tata Iron and Steel Industry established in ………….. . (a) Mumbai (b) Kolkata (c) Jamshedpur (d) Delhi |
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Answer» Correct option is (c) Jamshedpur |
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| 116742. |
The process of giving stress on cultivation of cash crops instead of food grains is known as …………. of agriculture. (a) Commercialisation (b) Liberalisation (c) Globalisation (d) Rotation |
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Answer» Correct option is (a) Commercialisation |
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| 116743. |
Which cash crops were encouraged by the British Government? |
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Answer» The British Government gave more encouragement to cash crops like cotton, indigo, tobacco, tea, etc. |
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| 116744. |
Where were the universities established in 1857? |
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Answer» The universities were established in Mumbai, Kolkata and Madras (Chennai) in 1857. |
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| 116745. |
What was the effect of development of modern means of transport and communication ? |
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Answer» The development of modern means of transport and communication helped to improve communication between the people and strengthened their sense of unity between Indians. |
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| 116746. |
Explain the following concept:Dual Government. |
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Answer» 1. The British East India Company in order to consolidate rule introduced new system of governance in India known as Dual Government. 2. It was introduced by Robert Clive in Bengal in 1765 wherein the East India Company took over the revenue collection. The maintenance of law and order was the responsibility of the Nawab of Bengal. |
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| 116747. |
Which values shaped the new era in the 19th century Europe? |
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Answer» The new era in the 19th century Europe was shaped on the values humanitarianism, democracy, nationalism and liberalism. |
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| 116748. |
Choose the wrong pair:AbbreviationsFull Forms1. PACS(a) Primary Agricultural Credit Society2. DCCB(b) Development Central Co-operative Banks3. SCB(c) State Co-operative Banks |
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Answer» Wrong Pair: DCCB – Development Central Cooperative Banks |
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| 116749. |
Choose the wrong pair:A. Agricultural CreditB. Requirement1. Short-term(a) Purchase of fertilizers2. Medium-term(b) To meet expenditureon marriages3. Long-term(c) To buy a tractor |
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Answer» Wrong Pair: Medium-term – To meet expenditure on marriages |
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| 116750. |
Identify and explain the concept from the given illustration:Subsidized credit is provided by banks to small farmers for the purchase of High Yielding Variety (HYV) seeds. |
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Answer» Short Term Loan. A short-term loan is taken for a period not exceeding two years. It is taken to meet shortterm requirements like buying fertilizers, buying HYV seeds, etc. |
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