This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Who gave the slogan 'One Person, One Empire and One Leader'?1. Hitler2. Napoleon3. Jar4. Mahatma Gandhi |
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Answer» Correct Answer - Option 1 : Hitler The correct answer is Hitler.
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| 2. |
Read the following passage and answer the questions that follow :1. Are you bored of bananas, apples and grapes and need a fresh produce pick? A nutrient-rich serving of kiwifruit may be just what you need. A serving of kiwifruit (2 kiwis) has twice the vitamin C of an orange, as much potassium as a banana and the fiber of a bowl of whole grain cereal“all for less than 100 calories!2. The fuzzy fruit is sky-high in both soluble and insoluble fiber, both of which are essential for promoting heart health, regulating digestion, and lowering cholesterol levels-that's a winning trifecta. Kiwi fruit has also been considered a "nutritional all-star," as Rutgers University researchers found that kiwifruit has the best nutrient density of 21 commonly consumed fruits.3. Along with vitamin C, kiwi fruit are rich in many bioactive compounds that have antioxidant capacity to help to protect against free radicals, harmful by-products produced in the body. If you want clean energy, think of kiwifruit because they're rich in magnesium, a nutrient essential to convert food into energy.4. A kiwi fruit also doubles as a peeper-keeper by supplying your eyes with protective lutein, a carotenoid that's concentrated in eye tissues and helps protect against harmful free radicals. Kiwifruit is also packed with blood pressure-lowering potassium. In fact, a 100 gram serving of kiwi fruit-that's about one large kiwi-provides 15% of the Recommended Daily Allowance (RDA) of potassium.5. Kiwi fruit has been growing in New Zealand for over 100 years. Once the fruit gained in popularity, other countries started to grow them including Italy, France, Chile, Rapan, South Korea and Spain. At first, kiwis were referred to as 'Yang Tao' or 'Chinese Gooseberry,' but the name was ultimately changed to kiwifruit so that everyone would know where the fruit came from.6. A ripe kiwi fruit will be plump and smooth-skinned, and free of wrinkles, bruise, and punctures. If you find that your kiwi is a little too firm after buying it, simply let it ripen at room temperature for three to five days. The former the fruit, the more tart it will taste. To speed up the ripening process, you can also place kiwis in a paper bag with an apple or banana. If you want to store the fruit longer, you should keep in a plastic bag in the refrigerator.1. What does a serving of kiwi offer?a. Kiwi fruit offers twice the Vitamin C of an orange, as much potassium as a banana and the fibre of a bowl of whole grain cereal- for all less than 100 calories!b. Kiwi fruit offers twice the Vitamin C of an orange, as much potassium as a banana and the fibre of a bowl of whole grain cereal- for all less than 200 calories!c. Kiwi fruit offers twice the Vitamin C of an orange, as much potassium as a banana and the fibre of a bowl of whole grain cereal- for all less than 10 calories!d. Kiwi fruit offers twice the Vitamin C of an orange, as much potassium as a banana and the fibre of a bowl of whole grain cereal- for all less than 122 calories!2. How is kiwi fruit helpful for the eyes?a. Kiwi fruit is helpful for the eyes because it supplies your eyes with protective carbon, a carotenoid that's concentrated in eye tissues and helps protect against harmful free radicals.b. Kiwi fruit is helpful for the eyes because it supplies your eyes with protective lutein, a carotenoid that's concentrated in eye tissues and helps protect against harmful free radicals.c. Kiwi fruit is helpful for the eyes because it supplies your eyes with protective fibre, a carotenoid that's concentrated in eye tissues and helps protect against harmful free radicals.d. Kiwi fruit is helpful for the eyes because it supplies your eyes with protective lutein, a nutrient that's concentrated in eye tissues and helps protect against harmful free radicals.3. Why has kiwi been considered a "nutritional all-star"?a. Kiwi has been considered a "nutritional all-star" because it is the best nutrient density of 15 commonly consumed fruits.b. Kiwi has been considered a "nutritional all-star" because it is the best nutrient density of 16 commonly consumed fruits.c. Kiwi has been considered a "nutritional all-star" because it is the best nutrient density of 21 commonly consumed fruits.d. Kiwi has been considered a "nutritional all-star" because it is the best nutrient density of 7 commonly consumed fruits.4. The synonym of 'capability' as given in paragraph 3 is -a. consumedb. densityc. caloriesd. capacity5. The antonym of 'dispersed' as given in paragraph 4 is -a. packedb. producedc. concentratedd. consumed6. How can you make a kiwi fruit ripen?a. If a kiwi fruit is a firm then it can be ripened by keeping it at room temperature for 10 days.b. If a kiwi fruit is a firm then it can be ripened by keeping it at room temperature for three to five days.c. If a kiwi fruit is a firm then it can be ripened by keeping it at room temperature for six days.d. If a kiwi fruit is a firm then it can be ripened by keeping it at room temperature for 7 days.7. The word 'compound' means :a. mixtureb. togetherc. concentratedd. consumed8. The word 'concentrated' means' :a. focusb. strongc. producedd. consumed9. The word 'bruises' means :a. packedb. togetherc. discolouredd. strong10. The word 'tart' means :a. packedb. strongc. concentratedd. bitter |
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Answer» 1. a. Kiwi fruit offers twice the Vitamin C of an orange, as much potassium as a banana and the fibre of a bowl of whole grain cereal- for all less than 100 calories! 2. b. Kiwi fruit is helpful for the eyes because it supplies your eyes with protective lutein, a carotenoid that's concentrated in eye tissues and helps protect against harmful free radicals. 3. c. Kiwi has been considered a "nutritional all-star" because it is the best nutrient density of 21 commonly consumed fruits. 4. d. capacity 5. c. concentrated 6. b. If a kiwi fruit is a firm then it can be ripened by keeping it at room temperature for three to five days. 7. a. mixture 8. b. strong 9. c. discoloured 10. d. bitter |
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| 3. |
Dividing the whole market on the basis of regions, states and climate. It is the example of which base of segmentation? A) Geographical B) Demographic C) PsychographicD) Behavioral |
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Answer» Correct option: A) Geographical |
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| 4. |
Explain the characteristics of a good prospect. |
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Answer» 1. Needy 2. Legally capable 3. Paying capability 4. Decision making power |
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| 5. |
What is SEBI and write its statutory power? |
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Answer» (a) Protecting the interests of investors in securities. (b) Promoting the development of the securities market. (c) Regulating the securities market. |
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| 6. |
What are the requirements for effective segmentation? |
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Answer» 1 segment should be measurable 2 should be accessible 3. Should be large 4. It should be feasible 5 it should be different |
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| 7. |
I LOVE to wear branded clothes. This statement is related to which type of segmentation? A) Geographic B) Demographic C) Behavioral D) Psychographic |
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Answer» Correct option: D) Psychographic |
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| 8. |
People, process and physical evidence are the elements of——A) Service B) Service marketing mix C) Intangible D) Marketing mix |
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Answer» People, process and physical evidence are the elements of Service marketing mix. |
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| 9. |
Write any three risks which mutual funds are exposed? |
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Answer» Some of the Risk to which Mutual Funds are exposed to is given below: 1. Market risk If the overall stock or bond markets fall on account of overall economic factors, the value of stock or bond holdings in the fund‟s portfolio can drop, thereby impacting the fund performance. 2. Non-market risk Bad news about an individual company can pull down its stock price, which can negatively affect fund holdings. This risk can be reduced by having a diversified portfolio that consists of a wide variety of stocks drawn from different industries. 3. Interest rate risk Bond prices and interest rates move in opposite directions. When interest rates rise, bond prices fall and this decline in underlying securities affects the fund negatively. |
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| 10. |
Which OUT of these is NOT requirement for effective segmentation? A) Measurable segmentation B) Non accessible C) Large D) Feasible |
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Answer» Correct option: B) Non accessible |
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| 11. |
Since when classification of 4p’s is in use by marketers throughout the world? A)1952 B)1950 C)1962 D)1960 |
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Answer» Correct option: D) 1960 |
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| 12. |
What is the plural form of ‘Chinese’?(a) Chinese (b) Chineses (c) Chinesies (d) Chinese’s |
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Answer» Correct answer is (a) Chinese |
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| 13. |
What is the plural form of ‘wolf? (a) wolfs (b) wolves (c) wolfies (d) wolfes |
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Answer» Correct answer is (b) wolves |
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| 14. |
Name the large establishment offering a wide variety of products classified into well-defined departments under one roof. |
| Answer» Correct Answer - Departmental Store | |
| 15. |
.........is a large establishment offering a wide variety of products, classified into well defined departments, aimed at satisfying every customer under one roof. a. General storeb. Departmental stores c. Mail order Business d. Street stall holders |
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Answer» b. departmental store |
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| 16. |
Fill in the blanks with a preposition where necessary:(i) He sold the statue - - - an American dealer - - - Rs. Sixty thousand.(ii) Vikas promised - - - us a share - - - the profits.(iii) I can not tell - - - you what she said - - - me - - - confidence.(iv) We must try to get - - - home - - - time - - - tea.(v) I am going - - - home - - - Sunday.(vi) She pressed the seed - - - the soil - - - her thumb.(vii) One morning, grandfather went - - - the garden to get some sun |
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Answer» (i) to, for (ii) to, in (iii) x, to, in (iv) at, on, for (v) to, on (vi) under, with (vii) to. |
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| 17. |
Define Personal Selling. State any two features of personal selling. |
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Answer» Personal selling involves oral presentation of message in the form of conversation with one or more prospective customers for the purpose of making sales. Features of personal selling: (i) Personal form : In personal selling a direct face to face dialogue takes place that involves an interactive relationship between the seller and the buyer. (ii) Development of Relationship: Personal selling allows a salesperson to develop relationship with p |
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| 18. |
Rearrange the segments to form meaningful sentences:1. your trunk In / please put / gently2. peace and tranquility / wanted to have / the hon / In his kingdom. 3. a good deed/and one day / I shall return / you have done me/ your kindness.4. with the findings / I am sure / you will be pleased / of the Commission of Enquiry.5. regarded It as my duty / I have always / of my friends / to protect the interest.6. to save his hut / he invited me / by the hurricane / from being blown away.7. fool people / you can / but not forever / for a time.8. right side of his mouth / Mara did not have / any teeth / on the9. ignorantly took the leaves / Mara’s wife / Into the fire / and threw them10. was completely cured f Krishna / In five days |
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Answer» 1. Please put your trunk in gently. 2. The Ion wanted to have peace and tranquility in his kingdom. 3. You have done me a good deed and one day I shall return your kindness. 4. I am sure you will be pleased with the findings of the Commission of Enquiry. 5. I have always regarded it as my duty to protect the interest of my friends. 6. He Invited me to save his hut from being blown away by the hurricane. 7. You can fool people for a time but not forever. 8. Mara did not have any teeth on the right side of his mouth. 9. Mara’s wife ignorantly took the leaves and threw them into the fire. 10. Krishna was completely cured in five days. |
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| 19. |
An energetic manager can be a great ________ to his firm. A) asset B) profit C) influence D) surcharge E) prosperity |
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Answer» Correct option is A) asset |
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| 20. |
Read the following case and answer the question given: Pankaj wants to start a company and asks his friend Rohit (a businessman) to explain the difference between a private and public company. Rohit told him that ‘a public company is the one which is not a private company’. Pankaj is now more confused than ever before. Suppose you are Sumit, his Chartered Accountant, state any three differences between Public and Private company, to help Pankaj in understanding the same. |
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Answer»
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| 21. |
If n (A) = 15, n (A È B ) = 29, n (A Ç B) = 7 then n (B) = ? |
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Answer» We have, n (A) = 15, n (A ∪ B ) = 29, n (A ∩ B) = 7 Since, n (B) = n (A ∪ B ) + n (A ∩ B) - n (A) = 29 + 7 - 15 So, n (B) = 21 |
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| 22. |
(Rearrange the segments to form a meaningful sentence) could have / asked for / an / you / audience. |
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Answer» You could have asked for an audience. |
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| 23. |
Write a factual description on “Demerits of City Life” in about 100 words. |
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Answer» Demerits of City Life The benefits of city life are shared by the rich. They are not for poor people. The poor live in slums, huts, etc. They do not get even pure air, what to speak of other good things. They often fall victim to diseases. They can’t afford to live in good houses. Due to heavy traffic pollution also burgeons there. There are more crimes in a city than in a village. In a city, accidents are common. In a village, people live in a friendly way. In a city, this fellow feeling is found nowhere. All good things in a city are for the rich. The poor can’t afford to enjoy them. In short, a city is a heaven for the rich but a hell for the poor. शहर की सुविधाओं का भोग धनी लोग ही करते हैं। गरीबों के लिए सुविधाएँ नहीं हैं। गरीब तो गन्दी बस्तियों, झोंपड़ियों इत्यादि में रहते हैं। दूसरी अच्छी चीजों की तो बात ही छोड़ दीजिये, उन्हें शुद्ध हवा तक नसीब नहीं होती। वे अक्सर बीमारियों के शिकार हो जाते हैं। वे अच्छे घरों में नहीं रह सकते। भारी यातायात के कारण वहाँ प्रदूषण भी बढ़ता है। शहर में गाँव से ज्यादा अपराध होते हैं। शहर में, दुर्घटनाएँ होना सामान्य बात है। गाँव में लोग मित्रवत् हिल-मिल कर रहते हैं। शहर में, इस सौहार्द का सर्वत्र अभाव रहता है। शहर की सभी अच्छी वस्तुएँ केवल धनी लोगों के लिए हैं। गरीब के पास उन्हें भोगने के साधन नहीं हैं। संक्षेप में, शहर धनवानों के लिए स्वर्ग है पर गरीबों के लिए नरक। |
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| 24. |
Write a factual description in about 100 words on “Global Warming”. |
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Answer» Global Warming Global warming is an international issue. It happens when the temperature of the earth shoots up to a higher degree. The major reason for this is greenhouse gases, like, methane, carbon dioxide, nitrous oxide etc. A very good example to explain the greenhouse effect is a car being parked in an area on a sunny day. After some time, when you try to get into the car you could feel the amount of heat inside the car. It is because the sun rays affect the car. The rays that affect the car enter inside but find no way to get back from inside. Likewise, the sun rays raise the temperature of the earth because the earth has very little power to re-emit them. Global warming is a danger that is growing proportionally to human progress but working against it. ग्लोबल वार्मिग एक अन्तर्राष्ट्रीय मसला है। यह तब होता है, जब पृथ्वी का तापमान उच्चतर स्तर पर पहुँच जाता है। इसका मुख्य कारण ग्रीन हाउस गैसें, जैसे- मीथेन, कार्बन-डाई-आक्साइड, नाइट्रस ऑक्साइड इत्यादि हैं। ग्रीन हाउस प्रभाव को समझने को सबसे अच्छा उदाहरण है एक कार जिसे धूप में खड़ी कर दिया जाये। कुछ देर बाद, जब आप कार में प्रवेश करने का प्रयास करते हैं तो आप कार के भीतर की गर्मी की मात्रा को महसूस कर सकते हैं। क्योंकि सूर्य की किरणें कार को प्रभावित करती हैं। जो किरणें कार को प्रभावित करती हैं वे कार के भीतर तो। प्रवेश कर जाती हैं लेकिन अन्दर से बाहर आने का कोई रास्ता नहीं पाती हैं। इसी तरह से सूर्य की किरणें पृथ्वी की तापमान इसलिए बढ़ा देती हैं क्योंकि पृथ्वी में उनको निष्कासित करने की इतनी शक्ति नहीं होती है। ग्लोबल वार्मिग एक खतरा है जो, मानवीय प्रगति के अनुरूप ही बढ़ रहा है लेकिन इसके खिलाफ काम कर रही है। |
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| 25. |
Write a factual description in about 100 words on “Laughter: A Good Medicine.” |
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Answer» Laughter: A Good Medicine Whenever a person is in stress, he/she always needs a stress reliever. When we think of various ways to release stress, laughter scores on the top. It is the most correct statement that laughter is the best medicine. A person can choose it from various stress releasing techniques, but a hearty laugh can do the best. A laughter-filled time releases hormones like endorphins that act in the body to release stress. It helps in better functioning of the heart. A laugh also helps develop muscles and acts as an element of exercise. Further, it creates a healthy frame of mind for the person to work or move on with his work ahead. Thus, it is good medicine to keep us healthy in every way. We should laugh as much as we can. जब कभी एक व्यक्ति तनाव में होता है तो उसे हमेशा ही किसी न किसी तनाव मुक्त करने वाले साधन की आवश्यकता होती है। जब हम तनाव मुक्त होने के विभिन्न तरीकों पर विचार करते हैं तो हँसी उनमें सबसे ऊपर होती है। यह सबसे सही कथन है कि हँसी (अट्टहास) सबसे अच्छी औषधि है। एक व्यक्ति तनाव मुक्त होने के विभिन्न तरीके अपना ले लेकिन दिली हंसी ही सबसे अच्छा काम कर सकती है। हँसी से भरा समय एन्डोर्फिन जैसे हार्मोन: मुक्त करता हैं जो कि शरीर में तनाव मुक्ति का कार्य करता है। यह हृदय को बेहतर तरीके से कार्य करने में मदद करता हैं। हँसी मांसपेशियों को विकसित होने में भी मदद करती है तथा व्यायाम जैसा कार्य करती है। और यह व्यक्ति के काम करने के लिए या अपने काम में आगे बढ़ने के लिए स्वस्थ मानसिक ढाँचा तैयार करती है। इस प्रकार से यह हमें हर प्रकार से स्वस्थ रखने की सबसे अच्छी औषधि है। हमें जितना ज्यादा हो सके उतना हँसना चाहिये। |
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| 26. |
Fruits are very important for health. Write “Four Health Benefits of Water Melon” in about 100 words. |
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Answer» Four Health Benefits of Watermelon Water-melons have tremendous health benefits. Anyone who wants to live a healthy lifestyle should make it a habit to take advantage of it every year. Lycopene is found in watermelon which reduces the risk of prostate cancer and heart disease in people. They contain Vitamin B6: which promotes chemicals in the brain that help people cope with anxiety and panic. They contain Vitamin C. Vitamin A works much like Vitamin C, in that it helps your body fight off infections. It also prevents blindness. As you can see, eating watermelon is almost tantamount to taking a multivitamin every morning. So you should make sure to take advantage of them when they are available. तरबूज जबरदस्त स्वास्थ्य लाभकर है। जो कोई भी स्वस्थ जीवन जीना चाहता है उसे प्रतिवर्ष इसका लाभ लेने की आदत बनानी चाहिये। तरबूज में लाइकोपिन पाया जाता है जो लोगों में प्रोस्टेट कैंसर व दिल की बीमारियों के खतरे को कम कर देता है। इनमें विटामिन बी-6 पाया जाता है, इससे मस्तिष्क में वे रसायन बनते हैं जो चिंता व आतंक से लोगों को डटकर मुकाबला करने के लिए मदद करते हैं। इसमें विटामिन-सी पाया जाता है। विटामिन-ए। बहुतं कुछ विटामिन-सी की तरह से कार्य करता है, जो आपके शरीर को संक्रमण से मुक्त रखने में भी मदद करता है। यह अंधेपन को भी रोकती है। जैसा कि आप देख सकते हैं, रोज प्रातः काल तरबूज खाना मल्टीविटामिन खाने के बराबर है। इसलिए आपको निश्चित कर लेना चाहिये कि ये जब उपलब्ध हों तो इनका फायदा उठाना चाहिये। |
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| 27. |
Write a factual description in about 100 words on “Merits of City Life.” |
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Answer» Merits of City Life City life has many pros. In a city, houses are built in a planned way. It has wide roads. Every city has electricity. All sorts of shops are there. Anything can be bought or sold easily. All sorts of transport facilities are there. A city has good hospitals. It also has a number of schools and colleges where one can get a good education. There are courts. Good doctors live in a city. In a city, water is supplied regularly. Every city has paks for walking. Poor people support themselves by doing some business or various menial jobs. Even a hawker earns enough. There are public libraries where one can read books and magazines without spending a paisa. There is a sufficient number of policemen to ensure law and order. शहरी जीवन के अनेक लाभ हैं। शहरों में घर, सुनियोजित ढंग से बने होते हैं। यहाँ चौड़ी सड़कें होती हैं। हर शहर में बिजली होती है। यहाँ हर प्रकार की दुकानें होती हैं। कोई भी वस्तु आसानी से खरीदी और बेची जा सकती है। यहाँ यातायात के सभी साधन मौजूद रहते हैं। शहर में अच्छे अस्पताल होते हैं। अनेक स्कूल और कॉलेज भी होते हैं, जहाँ अच्छी शिक्षा ग्रहण की जा सकती है। यहाँ कचहरियाँ होती हैं। अच्छे डॉक्टर शहर में ही रहते हैं । शहर में नियमित रूप से जलापूर्ति होती है। हर शहर में टहलने के लिए पार्क होते हैं। गरीब लोग किसी न किसी तरह का रोजगार कर अपना जीवन-यापन करते हैं। यहाँ तक कि एक फेरीवाला भी काफी कमा लेता है। शहर में सार्वजनिक पुस्तकालय होते हैं जहाँ बिना कुछ खर्च किये व्यक्ति पुस्तक अथवा पत्रिकाएँ पढ़ सकता है। कानून-व्यवस्था सुनिश्चित कराने के लिए काफी संख्या में पुलिस रहती है। |
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| 28. |
There are so many forms of exercises for health. Write a factual description in about 100 words on “Rope skipping: A Great Exercise.” |
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Answer» Rope skipping: A Great Exercise Rope skipping is a great cardio exercise that also has excellent effects on your body’s coordination and balance. If you do it regularly, it may increase your resistance. Here are a few benefits of rope skipping: it is a cheap way to lose weight. The skipping rope can be used anywhere. You may take it in your luggage if you travel a lot. You may use it indoors, outdoors, at the gym or at home. All you need is a little bit of space around you. This may turn out to be a great change for those who are bored by doing the same exercises again and again. It’s a fast way to burn calories. Skipping rope involves all muscle groups and helps you strengthen your whole body. रस्सी कूदना हृदय संबंधी एक बहुत ही अच्छा व्यायाम है जो आपके शरीर के समन्वय तथा संतुलन पर भी बहुत ही अच्छा प्रभाव डालता है। यदि आप इसे नियमित रूप से करते हैं तो यह आपकी प्रतिरोधक शक्ति को बढ़ा देता है। यहाँ पर रस्सी कूदने के कुछ फायदे दिये जा रहे हैं: वजन घयने का यह एक सस्ता तरीका है। रस्सी कूदना कहीं पर भी किया जा सकता है। यदि आप अत्यधिक यात्रा करते हैं तो आप इसे अपने सामान में साथ ले जा सकते। हैं। इसे आप घर के भीतर, घर के बाहर, जिम में या घर पर काम में ले सकते हैं। जो कुछ भी आपको चाहिये वह है आपके आस-पास थोड़ी-सी जगह। यह उनके लिए बहुत ही बड़ा परिवर्तन होगा जो एक ही एक प्रकार के व्यायाम को कर-करके ऊब गए हैं। कैलोरी को जलाने का यह सबसे तेज तरीका है। रस्सी कूदना आपकी सारी माँसपेशियों के समूह को शामिल कर लेता है तथा आपके पूरे शरीर को मजबूत बनाने में मदद करता है। |
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| 29. |
If \( \cos ^{-1} \frac{1}{x}=\theta \), then \( \tan \theta= \) |
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Answer» cos-1\(\frac 1x\) = \(\theta\) ⇒ \(\frac 1x\) = cos \(\theta\) ⇒ sec \(\theta\) = x ⇒ sec2\(\theta\) - 1 = x2 - 1 ⇒ tan2\(\theta\) = x2 - 1 (\(\because\) tan2\(\theta\) = sec2\(\theta\) - 1) ⇒ tan \(\theta\) = \(\sqrt{x^2-1}\) |
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| 30. |
Prove that \( \cos 4 x=\cos 2 x \) |
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Answer» cos 4x = cos 2x ⇒ cos 4x - cos 2x = 0 ⇒ 2 sin\((\frac{4x+2x}{2})\) sin\((\frac{2x-4x}2)\) = 0 (\(\because\) cos C - cos D = 2 sin(\(\frac{C+D}2\)) sin\((\frac{D-C}2)\)) ⇒ 2 sin 3x sin(-x) = 0 ⇒ -2 sin 3x sin x = 0 (\(\because\) sin(-x) = - sin x) ⇒ sin 3x sin x = 0 ⇒ sin x = 0 or sin 3x = 0 ⇒ x = \(n\pi\) or 3x = \(n\pi\) ⇒ x = \(n\pi\) or x = \(\frac{n\pi}3\) Hence, general solution of trigonometric equation cos 4x - cos 2x is x ∈ {\(n\pi\), \(\frac{n\pi}3\)}, n ∈ N. |
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| 31. |
cos θ = 1/2 and θ lies in IV quadrant. Find the value of θ. |
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Answer» cos θ = 1/2 and θ lies in IV quadrant. ⇒ cos θ = cos(\(\pi/3\)) (\(\because\,cos\,\pi/3 = 1/2\)) But θ lies in IV quadrant ⇒ cos θ = cos(2π - π/3) (\(\because\) cos(2π - θ) = cos θ) = cos (\(\frac{6\pi-\pi}3\)) ⇒ cos θ = cos(5π/3) \(\therefore\) θ = \(\frac{5\pi}3\) |
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| 32. |
cos17π/4 =(A) 1 (B) -1(C) 1/√2(D) -1/√2 |
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Answer» Correct option is: (C) \(\frac{1}{\sqrt{2}}\) |
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| 33. |
Find the derivative of \( f ( x )=\frac{x}{1+\tan x} \). |
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Answer» f(x) = \(\frac{x}{1+tan x}\) \(\therefore\) f'(x) = \(\cfrac{(1+tan x)\frac{dx}{dx}-x\frac{d}{dx}(1+tanx)}{(1+tanx)^2}\) \(\Big(\because\) \(\frac{d}{dx}\frac{u}{v}=\cfrac{v\frac{dy}{dx}-u\frac{dv}{dx}}{v^2}\)\(\Big)\) \(=\frac{1+tan x-x.sec^2x}{(1+tan x)^2}\) |
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| 34. |
The mode of the observation 12, 13, 11 ,14, 12, 13, 15, 11, 13, is– (A) 11 (B) 12 (C) 13 (D) 15 |
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Answer» Correct answer is (C) 13 |
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| 35. |
Evaluate Tan75° using 30° and 45°. |
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Answer» Tan θ = Opposite side/Adjacent side tan 0° = 0/1 = 0 tan 30° = [(√1/4)/√(3/4)] = 1/√3 tan 45° = 1 tan 60° = [(√3/2)/(½)] = √3 tan 90° = 1/0 = ∞ tan 75° can be written as tan(75°) = tan(45° + 30°) tan (A + B) = [tan A + tan B]/[1 – tan A tan B] tan(75°) = [tan(45°) + tan(30°)]/[1 – tan(45°)tan(30°)] tan(75°) = [1 + 1/√(3)]/(1 – 1/√(3)] tan(75°) = (√(3) + 1)/(√(3) – 1) |
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| 36. |
tan75° =(A) 2 - √3(B) 2 + √3(C) 2 + √3/√3(D) 2 - √3/√3 |
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Answer» Correct option is: (B) 2 + √3 |
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| 37. |
If 3 Median = Mode + x Mean then the value of x is(A) 1/3(B) 3/2(C) 2(D) 2/3 |
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Answer» Correct answer is (C) 2 |
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| 38. |
In ∆ABC, tan\((\frac{B-C}{2})\) =(A) \(\frac{b-c}{b+c}\)cot\(\frac{A}{2}\)(B) \(\frac{b+c}{b-c}\)cot\(\frac{A}{2}\)(C) \(\frac{b^2-c^2}{b-c}\)cot\(\frac{A}{2}\)(D) \(\frac{b+c}{b-c}\)cot2\(\frac{A}{2}\) |
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Answer» Correct option is: (A) \(\frac{b-c}{b+c}\)cot\(\frac{A}{2}\) |
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| 39. |
The value of sin40° - sin20° is(A) √3sin10°(B) sin10°(C) √3(D) √3sin20° |
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Answer» Correct option is: (A) √3sin10° |
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| 40. |
The arithemetic mean of 1, 2, 3, …, n is –(A) \(\frac{n}{2}\) + 1(B) \(\frac{n}{2}\)(C) \(\frac{n+1}{2}\)(D) \(\frac{n-1}{2}\) |
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Answer» Correct answer is (C) \(\frac{n+1}{2}\) |
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| 41. |
If `sum_(i=1)^9 (x_i-5)=9 and sum_(i=1)^9 (x_i-5)^2=45` then the standard deviation of the 9 items `x_1,x_2,.....,x_9` isA. 9B. 4C. 2D. 3 |
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Answer» Correct Answer - C Key idea standard deviation is remain is remain unchanged, if observations are odded or subtracted by a fixed number We have, `sum_(i=1)^(9) (x_(1)-5)=9 and sum_(i=1)^(9)(x_(i)-5)^(2)=45` `SD=sqrt ((sum_(i=1)^(9)(x_(1)-5)^(2))/(9)-((sum_(i=1)^(9)(x_(i)-5))/(9))^(2))` `rArr SD=sqrt((45)/(9)-((9)/(9))^(2))rArr SD = sqrt(5-1)=sqrt(4)=2` |
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| 42. |
The lines 3x - 4y + 4 = 0 and 6x - 8y - 7 = 0 are tangents to the same circle. The radius of this circle is:1. \(\dfrac32\)2. \(\dfrac34\)3. \(\dfrac45\)4. \(\dfrac7{10}\) |
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Answer» Correct Answer - Option 2 : \(\dfrac34\) Concept: For a pair of equations a1x + b1y + c1 = 0 and a2x + b2y + c2 = 0, if:
The distance between the parallel lines ax + by + c1 = 0 and ax + by + c2 = 0, is given by: \(\rm Distance=\dfrac{|c_1-c_2|}{\sqrt{a^2+b^2}}\).
Calculation: For the two lines 3x - 4y + 4 = 0 and 6x - 8y - 7 = 0, we have: \(\rm \dfrac{a_1}{a_2}=\dfrac{3}{6}=\dfrac{1}{2}\) \(\rm \dfrac{b_1}{b_2}=\dfrac{4}{8}=\dfrac{1}{2}\) \(\rm \dfrac{c_1}{c_2}=\dfrac{4}{-7}\) Since \(\rm \dfrac{a_1}{a_2}=\dfrac{b_1}{b_2}\ne\dfrac{c_1}{c_2}\), the given pair of lines are parallel to each other. Multiplying the first equation by 2, the two equations can be re-written as 6x - 8y + 8 = 0 and 6x - 7y - 7 = 0. The distance between them will be: \(\rm Distance=\dfrac{|c_1-c_2|}{\sqrt{a^2+b^2}}=\dfrac{|8-(-7)|}{\sqrt{6^2+(-8)^2}}=\dfrac{15}{\sqrt{100}}=\dfrac{15}{10}=\dfrac{3}{2}\). This distance is the diameter of the circle: Therefore, the radius of the circle will be: \(\rm Radius = \dfrac12\times\left(\dfrac12\right)=\dfrac34\).
The equation of the tangent to the circle x2 + y2 = r2 at a point (a, b), is given by: ax + by = r2. |
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| 43. |
Find the distance between 3r + 4y + 5= 0 and 6x + 8y + 2 = 0. |
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Answer» 3x + 4y + 5 = 0) ………….. (1) 3x + 4y + 1 = 0 …………. (2) Required distance |(5 - 1)/√(9 + 16)| = 4/5 units |
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| 44. |
Find k, if one of the lines given by 6x2 + kxy + y2 = 0 is 2x + y = 0. |
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Answer» Given equation is 6x2 + kxy + y2 = 0. Its auxiliary equation is m2 + km + 6 = 0 Since, 2x + y = 0 is one of the lines given by 6x2 + kxy + y2 = 0 Slope of the line 2x + y = 0 is -2. ∴ - 2 is one of the roots of the auxiliary equation m2 + km + 6 = 0 ∴ (- 2)2 + k(-2) + 6 = 0 ∴ 4 - 2k + 6 = 0 ∴ 2k = 10 ∴ k = 5 |
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| 45. |
What is the mean of the first 85 natural numbers?1. 362. 213. 284. 43 |
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Answer» Correct Answer - Option 4 : 43 Given: The first 85 natural numbers Formula used: Mean of first N natural numbers = (N + 1) ÷ 2 Calculation Mean = (85 + 1) ÷ 2 = 86/2 Mean = 43 |
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| 46. |
The mean and mode of 15, 12, 11, 15, and 22 is:1. 16, 152. 15, 153. 16, 224. 15, 22 |
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Answer» Correct Answer - Option 2 : 15, 15 Given: The given data, 15, 12, 11, 15, and 22 Concept used: Mode is the most repeated value in a data Formula used: Mean = Sum of numbers / Number of observations Calculations: Mean = (15 + 12 + 11 + 15 + 22)/5 ⇒ 75/5 ⇒ 15 The most repeated term, Mode = 15 ∴ The mean and mode of the given data is 15 and 15 respectively. |
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| 47. |
Find the range of 25, 10, 3, 13, 15, 21, 5, 2, 19, 4, 6?1. 162. 213. 234. 19 |
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Answer» Correct Answer - Option 3 : 23 Given: The numbers 25, 10, 3, 13, 15, 21, 5, 2, 19, 4, 6 Formula used: Range = Max number – minimum number Calculation Range = 25 – 2 Range = 23 |
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| 48. |
Find the mean of 21, 24, 25, 33, 28, and 19.1. 232. 243. 254. 26 |
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Answer» Correct Answer - Option 3 : 25 Given: The given data, 21, 24, 25, 33, 28, and 19 Formula used: Mean = Sum of numbers / Number of observations Calculations: Sum of numbers = 21 + 24 + 25 + 33 + 28 + 19 Sum = 150 Mean = 150/6 ∴ The mean of the given set of numbers is 25 |
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| 49. |
The negation of p ∧ (q → r) is(A) p v (~ q v r) (B) ~ p ∧ (q → r) (C) ~ p ∧ (~ q → ~ r) (D) ~ p v (q ∧ ~ r) |
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Answer» (D) ~ [p ∧ (q → r)] ≡ ~p v ~(q → r) ….(Negation of conjunction) ≡ ~p v (q ∧ ~r) .…(Negation of implication) |
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| 50. |
Find the range of 10, 21, 5, 1, 3, 17, 19, 2.A. 19B. 10C. 20D. 171. D2. A3. C4. B |
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Answer» Correct Answer - Option 3 : C Given: We have to find a range of 10, 21, 5, 1, 3, 17, 19, 2. Concept used: Arrange all numbers in ascending order Range = highest value - minimum value Calculation: Arrange numbers in ascending order ⇒ 1, 2, 3, 5, 10, 17, 19, 21 Range = highest value - minimum value ⇒ 21 - 1 ⇒ 20 ∴ The range of numbers is 20. |
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