IIT JEE Practice Question and Answer
8Q: Which one of the following vitamins is known as the anti sterile factor ? 4609 05b5cc6d7e4d2b4197774e719
5b5cc6d7e4d2b4197774e719- 1Ascorbic acidfalse
- 2Riboflavintrue
- 3Niacinfalse
- 4Retinolfalse
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Answer : 2. "Riboflavin"
Explanation :
Answer: B) Riboflavin Explanation:
Q: The current of a stream at 1 kmph. A motor boat goes 35 km upstream and back to the starting point in 12 hours. The speed of the motor boat in still water is ? 4608 05b5cc6dce4d2b4197774e9c4
5b5cc6dce4d2b4197774e9c4- 18 kmphfalse
- 26 kmphtrue
- 37.5 kmphfalse
- 45.5 kmphfalse
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Answer : 2. "6 kmph"
Explanation :
Answer: B) 6 kmph Explanation: Speed of the stream = 1Motor boat speed in still water be = x kmphDown Stream = x + 1 kmphUp Stream = x - 1 kmph[35/(x + 1)] + [35/(x - 1)] = 12x = 6 kmph
Q: ऑनलाइन कार्यात्मक शिक्षण पोर्टलों का उपयोग के माध्यम से किया जाता है 4600 05b5cc62fe4d2b4197774b983
5b5cc62fe4d2b4197774b983- 1वेब पोर्टलtrue
- 2इंटरएक्टिव मल्टीमीडिया निर्देशfalse
- 3प्रशिक्षक सुविधा नए उपकरणfalse
- 4उपरोक्त सभीfalse
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Answer : 1. "वेब पोर्टल"
Explanation :
Answer: A) वेब पोर्टल व्याख्या: ऑनलाइन कार्यात्मक शिक्षण पोर्टलों को वेब पोर्टल के माध्यम से एक्सेस किया जाता है।
Q: The marked price of an article is increased by 25% and the selling price is increased by 16.66%, then the amount of profit doubles. If the original marked price be Rs. 400 which is greater than the corresponding cost price by 33.33%, what is the increased selling price? 4582 05b5cc69ae4d2b4197774c755
5b5cc69ae4d2b4197774c755- 1Rs. 380false
- 2Rs. 420true
- 3Rs. 460false
- 4Rs. 440false
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Answer : 2. "Rs. 420"
Explanation :
Answer: B) Rs. 420 Explanation: As given in the question, Marked price is 25% more than the Cost price. => C.P of the article = 34 x 400 = 300 Now, Let the original S.P of the article be Rs. P Now the new S.P = P + 16.666 +13.333300 x P => S.P = 7P6 According to the question, 7P6 - 300 = 2P - 300 => 5P = 1800 => P = Rs. 360 Hence, the increased S.P = 360 x 7/6 = Rs. 420.
Q: कंप्यूटर पर गुम स्लॉट कवर का कारण बन सकता है 4545 15b5cc6ade4d2b4197774d118
5b5cc6ade4d2b4197774d118- 1प्रभाव में तेजी से व्रद्धिfalse
- 2ESD का अधूरा पथfalse
- 3ओवर हाईटtrue
- 4EMIfalse
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Answer : 3. "ओवर हाईट"
Explanation :
Answer: C) ओवर हैट स्पष्टीकरण: कंप्यूटर पर स्लॉट कवर कंप्यूटर के अंदर जमा धूल को कम करता है। इसलिए स्लॉट कवर उचित स्थान पर मौजूद होना चाहिए। लापता कवर केस के एयरफ्लो डिज़ाइन को बाधित कर सकते हैं और ओवरहीटिंग की समस्या पैदा कर सकते हैं।
Q: The wages of labourers in a factory increases in the ratio 22:25 and there was a reduction in the number of labourers in the ratio 15:11. Find the original wage bill if the present bill is Rs. 5000 ? 4533 05b5cc709e4d2b4197774f294
5b5cc709e4d2b4197774f294- 1Rs. 5500false
- 2Rs. 6000true
- 3Rs. 6200false
- 4Rs. 6350false
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Answer : 2. "Rs. 6000"
Explanation :
Answer: B) Rs. 6000 Explanation: The wages of labourers in a factory increases in the ratio 22:25 and there was a reduction in the number of labourers in the ratio 15:11. Find the original wage bill if the present bill is Rs 5000 ?Ratio of increase of wages = 22:25Ratio of decrease of labourers = 15:11Compound ratio of wages of labourers = 22 x 15 : 25 x 11 = 330:275Final bill = Rs. 5000For 275 ratio wages = Rs. 5000For 1 ratio wages = 5000/275For 330 ratio wages = 5000/275 x 330 = Rs. 6000
Q: In one hour, a boat goes 12 km/hr along the stream and 6 km/hr against the stream. The speed of the boat in still water (in km/hr) is: 4532 05b5cc6bde4d2b4197774d8fc
5b5cc6bde4d2b4197774d8fc- 19true
- 28false
- 37false
- 47.5false
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Answer : 1. "9"
Explanation :
Answer: A) 9 Explanation: Speed in still water = Average of Speed in Upstream and speed in Downstream = 1/2 (12 + 6) kmph = 9 kmph.
Q: "Kargil Vijay Diwas" was observed on _____. 4516 05b5cc6cae4d2b4197774e054
5b5cc6cae4d2b4197774e054- 126 Julytrue
- 227 Julyfalse
- 325 Julyfalse
- 429 Julyfalse
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Answer : 1. "26 July"
Explanation :
Answer: A) 26 July Explanation: