IIT JEE प्रश्न और उत्तर का अभ्यास करें
8प्र: Mica is available abundantly in 1849 05b5cc6b6e4d2b4197774d57d
5b5cc6b6e4d2b4197774d57d- 1Andhra Pradesh, Jharkand, Bihartrue
- 2Bihar, Gujarat, Telanganafalse
- 3Andhra Pradesh, Karnataka, Jharkandfalse
- 4Telangana, Andhra Pradesh, Biharfalse
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उत्तर : 1. "Andhra Pradesh, Jharkand, Bihar"
व्याख्या :
Answer: A) Andhra Pradesh, Jharkand, Bihar Explanation: According to 2005 - 2006 census - Jharkand According to 2011 - 2012 census - Andhra Pradesh are the highest producers of Mica in India.
प्र: The length of a class room floor exceeds its breadth by 25 m. The area of the floor remains unchanged when the length is decreased by 10 m but the breadth is increased by 8 m. The area of the floor is 1580 05b5cc6b6e4d2b4197774d577
5b5cc6b6e4d2b4197774d577- 15100 sq.mtrue
- 24870 sq.mfalse
- 34987 sq.mfalse
- 44442 sq.mfalse
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उत्तर : 1. "5100 sq.m"
व्याख्या :
Answer: A) 5100 sq.m Explanation: Let the breadth of floor be 'b' m. Then, length of the floor is 'l = (b + 25)' Area of the rectangular floor = l x b = (b + 25) × b According to the question, (b + 15) (b + 8) = (b + 25) × b b2 + 8b + 15b + 120 = b2 + 25b 2b = 120 b = 60 m. l = b + 25 = 60 + 25 = 85 m. Area of the floor = 85 × 60 = 5100 sq.m.
प्र: A decision committee of 5 members is to be formed out of 4 Actors, 3 Directors and 2 Producers. In how many ways a committee of 2 Actors, 2 Directors and 1 Producer can be formed ? 2151 05b5cc6b6e4d2b4197774d572
5b5cc6b6e4d2b4197774d572- 118false
- 224false
- 336true
- 432false
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उत्तर : 3. "36"
व्याख्या :
Answer: C) 36 Explanation: Required Number of ways = 4C2 × 3C2 × 2C1 = 36 = 36
प्र: In India, planned economy is based on 4504 05b5cc6b5e4d2b4197774d568
5b5cc6b5e4d2b4197774d568- 1Mixed Economy Systemfalse
- 2Capitalist Systemfalse
- 3Gandhian Systemfalse
- 4Socialist Systemtrue
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उत्तर : 4. "Socialist System"
व्याख्या :
Answer: D) Socialist System Explanation:
प्र: Which is the Largest Organ in the Human Body? 1745 05b5cc6b5e4d2b4197774d563
5b5cc6b5e4d2b4197774d563- 1Heartfalse
- 2Brainfalse
- 3Skintrue
- 4Liverfalse
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उत्तर : 3. "Skin"
व्याख्या :
Answer: C) Skin Explanation: There are about 70 organs in the human body. The Top 10 largest organs in the human body based on size are: 1. Skin 2. Liver 3. Brain 4. Lungs 5. Heart 6. Kidneys 7. The Spleen 8. The Pancreas 9. Thyroxin 10. The Prostrate.
प्र: Which Crop is Sown on the Largest Area in India? 6680 05b5cc6b5e4d2b4197774d55e
5b5cc6b5e4d2b4197774d55e- 1Wheatfalse
- 2Barleyfalse
- 3Ricetrue
- 4Maizefalse
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उत्तर : 3. "Rice"
व्याख्या :
Answer: C) Rice Explanation: India is the second largest producer of Rice in the World. Rice is the most cultivated crop in India. According to 2002-2003 census, about 33 million hectares of area in India was cultivated with Rice.
प्र: 0 divided by 0 1884 05b5cc6b5e4d2b4197774d558
5b5cc6b5e4d2b4197774d558- 10false
- 21false
- 3Undefinedfalse
- 4Indeterminatetrue
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उत्तर : 4. "Indeterminate"
व्याख्या :
Answer: D) Indeterminate Explanation: Indeterminate are those,which mathematics can’t determine. Because we don’t actually know which one is the exact answer for this due to having lots of results for this. Explanation:: Let us think by this analogy that, 0 / 1 = 0 0 / 2 = 0 ………… ……….. we can say 0 / n = 0 from this we can write, 0/0 = 0 Again, another analogy,(from limiting concept of 1/0 = infinity) 1 / 0 = +∞ or -∞ 2 /0 = +∞ or -∞ ……… .……. we can say 0 / 0 = ∞ Again, another analogy, 1 / 1 = 1 2/2 = 1 .…….. ……….. we can say, 0/0 = 1 Now, you see it’s confusing. Every analog is mathematically correct then which one is the right answer for 0/0. Therefore Mathematics can’t determine this fact. So, 0/0 is indeterminate.
प्र: A Step-Up Transformer Increases 1976 05b5cc6b5e4d2b4197774d54e
5b5cc6b5e4d2b4197774d54e- 1Powerfalse
- 2Currentfalse
- 3Frequencyfalse
- 4Voltagetrue
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उत्तर : 4. "Voltage"
व्याख्या :
Answer: D) Voltage Explanation: A transformer that increases voltage from primary to secondary (more secondary winding turns than primary winding turns) is called a Step-Up Transformer. Conversely, a transformer designed to do just the opposite is called a Step-Down Transformer.

