IIT JEE Practice Question and Answer
8Q: A circular piece of thin wire is converted into a rhombus of side 11 cm. Find the diameter of the circular piece? 2366 05b5cc6bbe4d2b4197774d85d
5b5cc6bbe4d2b4197774d85d- 128 cmfalse
- 23.5 cmfalse
- 37 cmfalse
- 414 cmtrue
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Answer : 4. "14 cm"
Explanation :
Answer: D) 14 cm Explanation: Circular piece is 4 x 11 = 44 cm long, Then Circumference of circle is given by, 44 = pi x D, where D is the diameter D = 44 / pi Take pi = 22 / 7, then D = 44 / (22/7) = (44 x 7) / 22 D = 14 cm.
Q: There are 600 Kabaddi players 4% wear knee band on one leg. Of the remaining, 25% wear knee bands on both legs. How many players don't wear a knee band ? 2364 05b5cc741e4d2b4197774f9db
5b5cc741e4d2b4197774f9db- 1426false
- 2428false
- 3415false
- 4432true
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Answer : 4. "432"
Explanation :
Answer: D) 432 Explanation: There are 600 Kabaddi players4% wear knee band on one legRemaining players = 600 x 0.96 = 576Of the remaining, 25% wear knee bands on both leg and Of the remaining, 75% do not wear knee bands .So players not wearing knee bands = 0.75 x 576 = 576 x 3/4 = 144 x 3 = 432.
Q: Is blood homogeneous or heterogeneous? 2364 05b5cc626e4d2b4197774b86f
5b5cc626e4d2b4197774b86f- 1Homogeneousfalse
- 2Heterogeneoustrue
- 3Both A & Bfalse
- 4None of the abovefalse
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Answer : 2. "Heterogeneous"
Explanation :
Answer: B) Heterogeneous Explanation: Blood is a heterogeneous mixture because the blood cells are physically separate from the blood plasma. The cells have different properties than the plasma. The cells can be separated from the plasma by centrifuging, which is a physical change.
Q: The term metabolism is best defined as 2364 05b5cc696e4d2b4197774c556
5b5cc696e4d2b4197774c556- 1the number of calories it takes to keep from shivering on a cold dayfalse
- 2biochemical reactions involved in building cell molecules or breaking down molecules for energytrue
- 3the length of time it takes to digest and absorb fatsfalse
- 4a measure of carbohydrate utilization, typically involving measurement of caloriesfalse
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Answer : 2. "biochemical reactions involved in building cell molecules or breaking down molecules for energy"
Explanation :
Answer: B) biochemical reactions involved in building cell molecules or breaking down molecules for energy Explanation: Metabolism (from Greek: μεταβολή metabolē, "change") is the set of life-sustaining chemical transformations within the cells of organisms. The three main purposes of metabolism are the conversion of food/fuel to energy to run cellular processes, the conversion of food/fuel to building blocks for proteins, lipids, nucleic acids, and some carbohydrates, and the elimination of nitrogenous wastes. In brief, the chemical processes that occur within a living organism in order to maintain life is called metabolism.
Q: If MILITARY can be written as 1, 2, 3, 2, 4, 5, 6, 7 then how can TIMLI be written in that code ? 2362 05b5cc6cde4d2b4197774e1b8
5b5cc6cde4d2b4197774e1b8- 12, 3, 1, 4, 2false
- 24, 2, 1, 5, 7false
- 33, 4, 5, 1, 6false
- 44, 2, 1, 3, 2true
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Answer : 4. "4, 2, 1, 3, 2"
Explanation :
Answer: D) 4, 2, 1, 3, 2 Explanation:
Q: Which solution is most concentrated? 2362 05b5cc615e4d2b4197774b6ce
5b5cc615e4d2b4197774b6ce- 16 g of solute in 10 ml of solutionfalse
- 220.5 g of solute in 50 ml of solutionfalse
- 330 g of solute in 120 ml of solutionfalse
- 42.6 g of solute in 2 ml of solutiontrue
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Answer : 4. "2.6 g of solute in 2 ml of solution"
Explanation :
Answer: D) 2.6 g of solute in 2 ml of solution Explanation: A concentrated solution will contain the most solute molecules per solvent molecules. Here in the given options, 1) 6/10 = 0.6 2) 20.5/50 = 0.41 3) 30/120 = 0.25 4) 2.6/2 = 1.3 Hence, option D) is most concentrated.
Q: A tailor has 37.5 metres of cloth and he has to make 8 pieces out of a metre of cloth. How many pieces can he make out of half of the cloth he has ? 2360 05b5cc6dfe4d2b4197774eb0c
5b5cc6dfe4d2b4197774eb0c- 1300false
- 2150true
- 3175false
- 4200false
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Answer : 2. "150"
Explanation :
Answer: B) 150 Explanation: Half of the cloth = 37.5/2 From 1 meter he will make 8 pieces=> in 37.5/2 ---- ? 37.5/2 x 8 = 150.
Q: The sum of three consecutive multiples of 3 is 72. What is the second largest number ? 2357 05b5cc6d8e4d2b4197774e7ba
5b5cc6d8e4d2b4197774e7ba- 127false
- 224true
- 321false
- 442false
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Answer : 2. "24"
Explanation :
Answer: B) 24 Explanation: Let the numbers be 3x, 3x + 3 and 3x + 6.Then,3x + (3x + 3) + (3x + 6) = 729x = 63x = 7Largest number = 3x + 6 = 27. => Second largest number = 27 - 3 = 24