IIT JEE प्रश्न और उत्तर का अभ्यास करें
8प्र: Which of the following is true of VoIP? 3397 05b5cc615e4d2b4197774b6d8
5b5cc615e4d2b4197774b6d8- 1It uses the public switched telephone network.false
- 2Skype is an example of VoIP software.true
- 3It uses a slow speed dial-up connection.false
- 4All of the abovefalse
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उत्तर : 2. "Skype is an example of VoIP software."
व्याख्या :
Answer: B) Skype is an example of VoIP software. Explanation: VOIP is an acronym for Voice Over Internet Protocol, or in more common terms phone service over the Internet. Voice over Internet Protocol is a category of hardware and software that enables people to use the Internet as the transmission medium for telephone calls by sending voice data in packets using IP rather than by traditional circuit transmissions of the PSTN.
प्र: ROM में भंडारित प्रोग्राम कहलाते हैं 3396 15b5cc6a9e4d2b4197774ceef
5b5cc6a9e4d2b4197774ceef- 1हार्डवेयरfalse
- 2फर्मवेयरtrue
- 3फ्रीवेयरfalse
- 4सॉफ्टवेयरfalse
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उत्तर : 2. "फर्मवेयर"
व्याख्या :
Answer: B) फर्मवेयर स्पष्टीकरण: वे प्रोग्राम जो हार्डवेयर की तरह स्थायी होते हैं और ROM में संग्रहीत होते हैं, फर्मवेयर के रूप में जाने जाते हैं। ROM में संग्रहीत डेटा को केवल धीरे-धीरे, कठिनाई के साथ संशोधित किया जा सकता है, या बिल्कुल भी नहीं, इसलिए इसका उपयोग मुख्य रूप से फर्मवेयर (सॉफ्टवेयर जो विशिष्ट हार्डवेयर से निकटता से जुड़ा हुआ है, और लगातार अपडेट की आवश्यकता नहीं है) या एप्लिकेशन सॉफ़्टवेयर को प्लग-इन में संग्रहीत करने के लिए किया जाता है। कारतूस।
प्र: Sum of the ages of Rajesh, Suresh, Mahesh and Dinesh is 76 years. 7 years hence, their age ratio is 7:6:5:8. Find Mahesh’s present age ? 3396 05b5cc6c2e4d2b4197774dba5
5b5cc6c2e4d2b4197774dba5- 117 yearsfalse
- 213 yearstrue
- 314 yearsfalse
- 416 yearsfalse
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उत्तर : 2. "13 years"
व्याख्या :
Answer: B) 13 years Explanation: Given R + S + M + D = 76 => R+7 : S+7 : M+7 : D+7 = 7:6:5:8 => Let the ratio = x => M+7 = 5x => M = 5x-7 => R = 7x-7 => S = 6x-7 => D = 8x-7 => R + S + M + D = 76 => 7x-7 + 6x-7 + 5x-7 + 8x-7 = 76 => 26x - 28 = 76 => 26x = 104 => x = 4 => Mahesh's present age = 5x-7 = 20 - 7 = 13 years.
प्र: A woman says, "If you reverse my own age, the figures represent my husband's age. He is, of course, senior to me and the difference between our ages is one-eleventh of their sum." The woman's husband age is ? 3389 05b5cc720e4d2b4197774f613
5b5cc720e4d2b4197774f613- 145false
- 224false
- 342false
- 454true
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उत्तर : 4. "54"
व्याख्या :
Answer: D) 54 Explanation: By trial and error method from the given options, as 54 - 45 = (1/11) x (45+54) = 99/11 = 9 Hence this satisfies the given conditions. Then the woman's husband age is 54.
प्र: The main goal for farmers in 1900 was to 3388 05b5cc672e4d2b4197774c0d8
5b5cc672e4d2b4197774c0d8- 1Force the railroads to lower freight ratesfalse
- 2Enable them to pay back their loans more easilyfalse
- 3Hold on to political and economic power.true
- 4voters greater direct participation in governmentfalse
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उत्तर : 3. "Hold on to political and economic power."
व्याख्या :
Answer: C) Hold on to political and economic power. Explanation:
प्र: A garrison of 2000 men has provisions for 54 days. At the end of 15 days, a reinforcement arrives, and it is now found that the provisions will last only for 20 days more. What is the reinforcement ? 3386 05b5cc6e7e4d2b4197774edb0
5b5cc6e7e4d2b4197774edb0- 11900true
- 22100false
- 31700false
- 42000false
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उत्तर : 1. "1900"
व्याख्या :
Answer: A) 1900 Explanation: Given 2000 ---- 54 days The provisions for 2000 men for 39 days can be completed by 'm' men for only 20 days. i.e, 2000 ----- 39 days == m ---- 20 days => m x 20 = 2000 x 39 m = 3900 So total men for 20 days is 3900 => 2000 old and 1900 new reinforcement. Hence, reinforcement = 1900.
प्र: The basic operations performed by a computer are 3385 05b5cc651e4d2b4197774bcea
5b5cc651e4d2b4197774bcea- 1Logical operationfalse
- 2Storage and relativefalse
- 3Arithmetic operationfalse
- 4All the abovetrue
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उत्तर : 4. "All the above"
व्याख्या :
Answer: D) All the above Explanation: The basic operations performed by a computer are Arithmetic operation, Logical operation and Storage and relative.
प्र: How many number of weights do you need to weight 31 kg of Rice if you have one kg of weight stone ? 3383 05b5cc736e4d2b4197774f879
5b5cc736e4d2b4197774f879- 13false
- 25true
- 37false
- 49false
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उत्तर : 2. "5"
व्याख्या :
Answer: B) 5 Explanation: There are total 5 ways.we have only one kg of weight so,2kg = 1kg + 1kg4kg = 1 + 2 + 18kg = 1 + 2 + 4 + 116kg = 1 + 2 + 4 + 8 + 131kg = 1 + 2 + 4 + 8 + 16So 5 weights are needed.

