IIT JEE प्रश्न और उत्तर का अभ्यास करें
8प्र: The Most Important Ore of Aluminium is 1867 05b5cc6b9e4d2b4197774d71b
5b5cc6b9e4d2b4197774d71b- 1Calaminefalse
- 2Monazitefalse
- 3Magnetitefalse
- 4Bauxitetrue
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उत्तर : 4. "Bauxite"
व्याख्या :
Answer: D) Bauxite Explanation:
प्र: The Rain Shadow Effect is associated with 1720 15b5cc6b9e4d2b4197774d716
5b5cc6b9e4d2b4197774d716- 1Convectional rainfallfalse
- 2Frontal rainfallfalse
- 3Cyclonic rainfallfalse
- 4Orographic rainfalltrue
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उत्तर : 4. "Orographic rainfall"
व्याख्या :
Answer: D) Orographic rainfall Explanation: Orographic precipitation or Rain produced when moist air is lifted as it moves over a mountain range. As the air rises and cools, orographic clouds form and serve as the source of the precipitation, most of which falls upwind of the mountain ridge. Some also falls a short distance downwind of the ridge and is sometimes called spillover. On the lee side of the mountain range, rainfall is usually low, and the area is said to be in a Rain Shadow.
प्र: P, Q, R, S, T and U are six consecutive odd numbers and their average is 52. What is the product of P and U ? 2569 05b5cc6b9e4d2b4197774d711
5b5cc6b9e4d2b4197774d711- 12212false
- 22154false
- 32349false
- 42679true
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उत्तर : 4. "2679"
व्याख्या :
Answer: D) 2679 Explanation: Let x, x+2, x+4, x+6, x+8 and x+10 are six consecutive odd numbers. Given that their average is 52 Then, x + x+2 + x+4 + x+6 + x+8 + x+10 = 52×6 6x + 30 = 312 x = 47 So Product = 47 × 57 = 2679
प्र: The Gas used for Artificial Ripening of Green Fruit is 1458 05b5cc6b9e4d2b4197774d707
5b5cc6b9e4d2b4197774d707- 1Acetonefalse
- 2Di Carbonatefalse
- 3Ethylenetrue
- 4Ethyl Alcoholfalse
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उत्तर : 3. "Ethylene"
व्याख्या :
Answer: C) Ethylene Explanation: Ethylene is used for Artificial Ripening of Green Fruit. Calcium carbide is also used in some countries for artificially ripening fruit. When calcium carbide comes in contact with moisture, it produces acetylene gas, which is quite similar in its effects to the natural ripening agent, ethylene
प्र: A seller charges 28% more from a customer as GST on an article. If customer paid Rs. 4544, what is the cost price of the article? 1305 05b5cc6b9e4d2b4197774d70c
5b5cc6b9e4d2b4197774d70c- 1Rs. 3550true
- 2Rs. 2650false
- 3Rs. 3840false
- 4Rs. 2450false
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उत्तर : 1. "Rs. 3550"
व्याख्या :
Answer: A) Rs. 3550 Explanation: Let the cost price of the article be 'P' Then from given data, P + 28P100 = 4544=> 128P = 454400=> P = 3550 Hence, the cost price of the article = P = Rs. 3550
प्र: Which is the largest coal producing country in the World? 1529 05b5cc6b9e4d2b4197774d6fd
5b5cc6b9e4d2b4197774d6fd- 1Indiafalse
- 2Chinatrue
- 3Russiafalse
- 4New-zealandfalse
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उत्तर : 2. "China"
व्याख्या :
Answer: B) China Explanation: China has been by far the biggest coal producing country over the last three decades. The country produced about 3.6 billion tonnes (Bt) of coal in 2012 accounting for over 47% of the world's total coal output.
प्र: 3 : 12 :: 5 : ? 1297 05b5cc6b9e4d2b4197774d702
5b5cc6b9e4d2b4197774d702- 117false
- 230true
- 326false
- 432false
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उत्तर : 2. "30"
व्याख्या :
Answer: B) 30 Explanation: 332 + 3 = 12552 + 5 = 30
प्र: Which of the following metal is generally used for making filaments of bulb? 2785 05b5cc6b9e4d2b4197774d6f3
5b5cc6b9e4d2b4197774d6f3- 1Wtrue
- 2Agfalse
- 3Fefalse
- 4Rhfalse
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उत्तर : 1. "W"
व्याख्या :
Answer: A) W Explanation: W is the symbol for chemical element Tungsten or Wolfram. It is used in making filaments of bulbs.

