IIT JEE Practice Question and Answer
8Q: In a 40 litre mixture of alcohol & water, the ratio of alcohol and water is 5 : 3. If 20% of this mixture is taken out and the same amount of water is added then what will be the ratio of alcohol and water in final mixture? 2673 05b5cc6b2e4d2b4197774d3be
5b5cc6b2e4d2b4197774d3be- 11:1true
- 22:1false
- 33:1false
- 41:2false
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Answer : 1. "1:1"
Explanation :
Answer: A) 1:1 Explanation: Quantity of alohol in the mixture = 40 x 5/8 = 25 lit Quantity of water = 40 - 25 = 15 lit According to question, Required ratio = 20 - 40 x 20100 x 5815 - 40 x 20100 x 38 + 40 x 20100 = 2015 - 3 + 8 = 1 : 1
Q: Where are saved files stored in computer ? 2672 05b5cc69ee4d2b4197774c95b
5b5cc69ee4d2b4197774c95b- 1Hard disktrue
- 2Cachefalse
- 3RAMfalse
- 4Any of abovefalse
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Answer : 1. "Hard disk"
Explanation :
Answer: A) Hard disk Explanation: Most operating systems store files on a hard disk.
Q: For Galvanizing Iron which of the following Metals is used? 2671 05b5cc6b1e4d2b4197774d33c
5b5cc6b1e4d2b4197774d33c- 1Zinctrue
- 2Leadfalse
- 3Aluminiumfalse
- 4Copperfalse
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Answer : 1. "Zinc"
Explanation :
Answer: A) Zinc Explanation: Zinc metal is used for Galvanizing Iron. Galvanization or Galvanizing :: Galvanization is the process of applying a protective zinc coating to steel or iron, to prevent rusting. Most common method of Galvanization is Hot-Dip Galvanizing in which parts are submerged in a bath of molten zinc.
Q: Find the odd man out from the given alternatives ? 2670 05b5cc6cee4d2b4197774e232
5b5cc6cee4d2b4197774e232- 197false
- 2233false
- 3437true
- 4599false
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Answer : 3. "437"
Explanation :
Answer: C) 437 Explanation: Except 437 all others are prime numbers.
Q: Which of the following statements about financial aid are true? 2670 05b5cc619e4d2b4197774b72f
5b5cc619e4d2b4197774b72f- 1Financial aid is available to community college students.true
- 2Most high school varsity sports team members will receive an athletic scholarship.false
- 3Elite, private colleges don't offer financial aid packages.false
- 4Only children of unemployed parents can't qualify for financial aid.false
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Answer : 1. "Financial aid is available to community college students."
Explanation :
Answer: A) Financial aid is available to community college students. Explanation:
Q: Samuel Gompers was a leading proponent of what industrial issue? 2669 05b5cc626e4d2b4197774b85f
5b5cc626e4d2b4197774b85f- 1the formation of trustsfalse
- 2the formation of labor unionstrue
- 3the crushing of labor unionsfalse
- 4vertical integrationfalse
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Answer : 2. "the formation of labor unions"
Explanation :
Answer: B) the formation of labor unions Explanation: Samuel Gompers was a leading proponent of workers' rights. He was the first president of the American Federation of Labor, an organization that represented skilled workers from many different industries. Gompers advocated using collective bargaining or negotiations and strikes to gain greater rights for workers.
Q: If 200 cats kill 200 mice in 200 days, then 8 cats would kill 8 mice in how many days ? 2667 05b5cc720e4d2b4197774f5fe
5b5cc720e4d2b4197774f5fe- 18 daysfalse
- 2200 daystrue
- 3800 daysfalse
- 41 dayfalse
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Answer : 2. "200 days"
Explanation :
Answer: B) 200 days Explanation: As given200 cats kill 200 mice in 200 days1 cats kill 1 mouse in 200 daysThen 8 cats kill 8 mice in 200 days.
Q: Eye Test Logical Challenge 2667 05b5cc6d2e4d2b4197774e47b
5b5cc6d2e4d2b4197774e47b- 115true
- 214false
- 316false
- 417false
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Answer : 1. "15"
Explanation :
Answer: A) 15 Explanation: