IIT JEE Practice Question and Answer
8Q: I am the mother of three children. Can you find my Age ? 2081 05b5cc6d1e4d2b4197774e3f2
5b5cc6d1e4d2b4197774e3f2- 127true
- 236false
- 324false
- 432false
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Answer : 1. "27"
Explanation :
Answer: A) 27 Explanation: From the given conditions , only A = 27 yrs satisfies.
Q: If the given two numbers are respectively 7% and 28% of a third number, then what percentage is the first of the second ? 2081 05b5cc75ce4d2b4197774fc48
5b5cc75ce4d2b4197774fc48- 124%false
- 229%false
- 334%false
- 425%true
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Answer : 4. "25%"
Explanation :
Answer: D) 25% Explanation: Here, k = 7 and l = 28Therefore, first number = klx100 % of second number = 7/28 x 100% of second number = 25% of second number.
Q: The Ghodazari Wildlife Sanctuary (GWS) will come up in which state? 2079 05b5cc6ace4d2b4197774d087
5b5cc6ace4d2b4197774d087- 1Maharashtratrue
- 2Karnatakafalse
- 3Tamil Nadufalse
- 4Odishafalse
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Answer : 1. "Maharashtra"
Explanation :
Answer: A) Maharashtra Explanation: The Maharashtra Government has recently approved Ghodazari Wildlife Sanctuary in Chandrapur district as a new wildlife sanctuary in the state.
Q: A,B,C together can do a piece of work in 10 days.All the three started workingat it together and after 4 days,A left.Then,B and C together completed the work in 10 more days.In how many days can complete a work alone ? 2078 05b5cc70ee4d2b4197774f34c
5b5cc70ee4d2b4197774f34c- 125true
- 224false
- 323false
- 421false
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Answer : 1. "25"
Explanation :
Answer: A) 25 Explanation: (A+B+C) do 1 work in 10 days. So (A+B+C)'s 1 day work=1/10 and as they work together for 4 days so workdone by them in 4 days=4/10=2/5 Remaining work=1-2/5=3/5 (B+C) take 10 more days to complete 3/5 work. So( B+C)'s 1 day work=3/50 Now A'S 1 day work=(A+B+C)'s 1 day work - (B+C)'s 1 day work=1/10-3/50=1/25 A does 1/25 work in in 1 day Therefore 1 work in 25 days.
Q: What determines the value of an item? 2077 05b5cc6a0e4d2b4197774ca76
5b5cc6a0e4d2b4197774ca76- 1the capital required to build the factorytrue
- 2the unlimited wants of the consumersfalse
- 3the resources consumed in productionfalse
- 4the amount of goods that are producedfalse
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Answer : 1. "the capital required to build the factory"
Explanation :
Answer: A) the capital required to build the factory Explanation: Value is the monetary worth of something, in this case, it is an item. In option A, since it is talking about capital which is measured in monetary terms. The value of an item is determined by its quality and its age. Often antiques with good quality are sold in the market with a high value and are sometimes auctioned.
Q: Milk is an example of a 2076 05b5cc651e4d2b4197774bd23
5b5cc651e4d2b4197774bd23- 1Emulsiontrue
- 2Solutionfalse
- 3Gelfalse
- 4Suspensionfalse
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Answer : 1. "Emulsion"
Explanation :
Answer: A) Emulsion Explanation: Milk is an emulsion of oil in water (o/w). Emulsion: A suspension of droplets of one liquid in another. Constituents of milk : The principal constituents of milk are water, fat, proteins, lactose (milk sugar) and minerals (salts). Milk also contains trace amounts of other substances such as pigments, enzymes, vitamins, phospholipids (substances with fatlike properties), and gases.
Q: The first effective vaccine against polio was prepared by ? 2075 05b5cc723e4d2b4197774f681
5b5cc723e4d2b4197774f681- 1Robert Edwardsfalse
- 2James Simpsonfalse
- 3H Gibbonfalse
- 4Jonas E Salktrue
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Answer : 4. "Jonas E Salk"
Explanation :
Answer: D) Jonas E Salk Explanation:
Q: In a class, seven students are standing in a row. Q is standing left to R but right to P. O is standing right to N and left to P. Similarly, S is standing right to R and left to T. Find out who is standing in the middle ? 2074 05b5cc711e4d2b4197774f394
5b5cc711e4d2b4197774f394- 1Qtrue
- 2Rfalse
- 3Pfalse
- 4Sfalse
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Answer : 1. "Q"
Explanation :
Answer: A) Q Explanation: As from the given conditions;Order is N O P Q R S THere the student standing in the middle is 'Q'.

