IIT JEE प्रश्न और उत्तर का अभ्यास करें
8प्र: Incorporation creates a local government and 2795 05b5cc626e4d2b4197774b85a
5b5cc626e4d2b4197774b85a- 1determines who will serve as mayor and council members.false
- 2divides a state into separate counties with their own leaders.true
- 3manages the court system on the county and city level.false
- 4creates geographic boundaries for villages, towns, and cities.false
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उत्तर : 2. "divides a state into separate counties with their own leaders."
व्याख्या :
Answer: B) divides a state into separate counties with their own leaders. Explanation: Incorporation is a legal process that enables the formation of a local government and divides a state into separate counties with their own leaders. The different counties become self governing entities under the laws of the state in which they fall and are given the authority to function as independent units but within the jurisdiction of the state laws.
प्र: 5% people of a village in India died by dengue, 15% of the remainder left the village on account of fear. If now the population is reduced to 3553, how much was it in the beginning ? 2794 05b5cc6e0e4d2b4197774eb5c
5b5cc6e0e4d2b4197774eb5c- 14400true
- 23100false
- 32800false
- 45600false
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उत्तर : 1. "4400"
व्याख्या :
Answer: A) 4400 Explanation: Let 'P' be the original population at the beginning P x (95/100) x (85/100) = 3553 P = 4400.
प्र: निम्नलिखित में से कौन सा सॉफ्टवेयर नहीं है? 2792 05b5cc6a7e4d2b4197774ce03
5b5cc6a7e4d2b4197774ce03- 1Compilertrue
- 2Adobefalse
- 3Microsoft Officefalse
- 4Driversfalse
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उत्तर : 1. "Compiler"
व्याख्या :
Answer: A) कंपाइलर स्पष्टीकरण: एक कंपाइलर एक सॉफ्टवेयर नहीं है। Adobe, Microsoft Office और Drivers सभी कंप्यूटर के सॉफ़्टवेयर हैं।
प्र: One major cause of floods is 2790 05b5cc699e4d2b4197774c6d7
5b5cc699e4d2b4197774c6d7- 1light rain over a large areafalse
- 2a decrease in stream dischargefalse
- 3rapid spring snowmelttrue
- 4increased capacity of stream channelsfalse
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उत्तर : 3. "rapid spring snowmelt"
व्याख्या :
Answer: C) rapid spring snowmelt Explanation: There are lots of reasons behind the flood in any area but the main reason is a heavy downpour or rapid snowmelt can flood canyons with a mixture of soil, rock, and water is a major cause of floods. When the spring times come, sometimes there's a lot of warmth that suddenly comes, especially nowadays when there are things such as global warming. So the snow melts and large amounts of water can flood the fields that are often found at the foot of a mountain or similar things. But they may also be caused by deforestation, drainage channel modification from a landslide, earthquake or volcanic eruption. Examples include outburst floods and lahars.
प्र: A user type a content on 20 sheets, each sheet consist of 55 lines, and each line can have 66 characters. The content is again retyped on another set of sheets, these new sheets have 65 lines and each line can take 70 characters. Calculate the reduction in sheets ? 2790 05b5cc6fee4d2b4197774f15c
5b5cc6fee4d2b4197774f15c- 12 or 60%false
- 24 or 20%true
- 36 or 10%false
- 48 or 5%false
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उत्तर : 2. "4 or 20%"
व्याख्या :
Answer: B) 4 or 20% Explanation: 20 x 55 x 66 = L x 65 x 70Here L = 72,600/4550 = 15.95 =~ 16Reduction is 20-16 = 4 which is 20% reduction.
प्र: At what time between 3 and 4 o’clock will the minute hand and the hour hand are on the same straight line but facing opposite directions ? 2784 05b5cc75ee4d2b4197774fcee
5b5cc75ee4d2b4197774fcee- 13:15 2/8false
- 23:49false
- 33:49 1/11true
- 43:51false
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उत्तर : 3. "3:49 1/11"
व्याख्या :
Answer: C) 3:49 1/11 Explanation: On straight line means 180 degree angle.180 = 11/2 min – 30 hrs180 = 11/2 m – 30 × 3180 = 11/2 m – 90(180 + 90) 2 = 11 mm = 540/11 = 49 1/11 minutes.
प्र: Which of the following statements about ddntps is true? 2780 05b5cc688e4d2b4197774c350
5b5cc688e4d2b4197774c350- 1They have a hydrogen at the 3’ carbon of the sugar.true
- 2DNA polymerase can add a new dNTP to a 3’ ddNTP.false
- 3They have a free 3’-hydroxyl group on the ribose sugar.false
- 4They have an oxygen at the 2’ carbon of the ribose sugar.false
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उत्तर : 1. "They have a hydrogen at the 3’ carbon of the sugar."
व्याख्या :
Answer: A) They have a hydrogen at the 3’ carbon of the sugar. Explanation: ddNTPs - Dideoxynucleotides and abbreviated as ddNTPs. They are chain-elongating inhibitors of DNA polymerase, used in the Sanger method for DNA sequencing. They have a hydrogen at the 3’ carbon of the ribose sugar.
प्र: Select the correct statement about the Heart Valves. 2780 05b5cc6b3e4d2b4197774d40e
5b5cc6b3e4d2b4197774d40e- 1Aortic and pulmonary valves control the flow of blood into the heart.false
- 2The AV valves are supported by chordae tendineae so that regurgitation of blood into the atria during ventricular contraction does not occur.true
- 3The tricuspid valve divides the left atrium from the left ventricle.false
- 4The mitral valve separates the right atrium from the right ventricle.false
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उत्तर : 2. "The AV valves are supported by chordae tendineae so that regurgitation of blood into the atria during ventricular contraction does not occur."
व्याख्या :
Answer: B) The AV valves are supported by chordae tendineae so that regurgitation of blood into the atria during ventricular contraction does not occur. Explanation: The correct statement from the given options is The AV valves are supported by chordae tendineae so that regurgitation of blood into the atria during ventricular contraction does not occur.