IIT JEE Practice Question and Answer
8Q: Robert is traveling on his cycle and has calculated to reach point A at 2 p.m. if he travels at 10 km/hr; he will reach there at 12 noon if he travels at 15 km/hr. At what speed must he travel to reach A at 1 p.m. ? 1465 05b5cc6dae4d2b4197774e899
5b5cc6dae4d2b4197774e899- 120 kmphfalse
- 218 kmphfalse
- 312 kmphtrue
- 416 kmphfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 3. "12 kmph"
Explanation :
Answer: C) 12 kmph Explanation: Let the distance traveled be x km.Then, x/10 - x/15 = 23x - 2x = 60 => x = 60 km.Time taken to travel 60 km at 10 km/hr = 60/10 = 6 hrs.So, Robert started 6 hours before 2. p.m. i.e., at 8 a.m.Required speed = 60/5 = 12 kmph.
Q: When 5% is lost in grinding Maize, a country has to import 20 million bags; but when only 2% is lost, it has to import only 15 million bags. Find the quantity of Maize, which grows in the country ? 1501 05b5cc6dae4d2b4197774e88f
5b5cc6dae4d2b4197774e88f- 1188 millionfalse
- 2166 2/3 milliontrue
- 3192 3/4 millionfalse
- 4Nonefalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 2. "166 2/3 million"
Explanation :
Answer: B) 166 2/3 million Explanation: 5% - 2% = 3%=> 3% ------ 5 million bags 100% ---- ? => 166 2/3 million bags.
Q: Which state government has launched “Mahaswayam portal” for job seekers and employers ? 1743 05b5cc6dae4d2b4197774e885
5b5cc6dae4d2b4197774e885- 1Andhra Pradeshfalse
- 2Assamfalse
- 3Telanganafalse
- 4Maharashtratrue
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 4. "Maharashtra"
Explanation :
Answer: D) Maharashtra Explanation: The Chief Minister of Maharashtra Devendra Fadnavis has recently launched a web portal ‘Mahaswayam’ for job seekers, employers, entrepreneurs and training institutes. At ‘Mahaswayam’, job seekers will be able to register themselves, search as well as apply for jobs, inquire for training, get information on self-employment and get details of job fairs. Besides, training institutes can also register, get details on participation in the state skill development programme, get training fee receipts, and can also receive training fee through ECS. Apart from this, entrepreneurs can also post job vacancy advertisements at the portal.
Q: Find the quadratic equations whose roots are the reciprocals of the roots of 2x2+5x+3? 1840 05b5cc6dae4d2b4197774e88a
5b5cc6dae4d2b4197774e88a- 13x2+5x+2=0true
- 25x2+3x+2=0false
- 33x2-5x-2=0false
- 4Nonefalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "3x2+5x+2=0"
Explanation :
Answer: A) A Explanation: The quadratic equation whose roots are reciprocal of 2x2+5x+3=0 can be obtained by replacing x by 1/x. Hence, 2(1/x)(1/x)+ 5(1/x) + 3 = 0 => 3x2+5x+2=0
Q: Which of the following metals forms an amalgam with other metals ? 3236 15b5cc6d9e4d2b4197774e86c
5b5cc6d9e4d2b4197774e86c- 1Mercurytrue
- 2Zincfalse
- 3Tinfalse
- 4Leadfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "Mercury"
Explanation :
Answer: A) Mercury Explanation:
Q: I, J , K and L are all distinct individual. I is the daughter of J. J is the son of K and 'K' is the father of L. If B is the son of J and B has one brother, 'D'. Then which of the following statements is/ are true ? I. I is the sister of D. II. D and B are brother. III. K is the grand father of D. 1394 05b5cc6d9e4d2b4197774e867
5b5cc6d9e4d2b4197774e867- 1Only Ifalse
- 2I & IIfalse
- 3Only IIIfalse
- 4All of thesetrue
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 4. "All of these"
Explanation :
Answer: D) All of these Explanation: K | J -- L | I -- D -- B Here I is female J, K, L & D , B are males Then from the above conditions, All of the given statements are true.
Q: Pointing towards a photograph kiran said to chotu, "I am the only daughter of this lady and her son is your maternal uncle " How is the kiran related to chotu's father ? 2175 05b5cc6d9e4d2b4197774e862
5b5cc6d9e4d2b4197774e862- 1Cousinfalse
- 2Daughterfalse
- 3Sisterfalse
- 4Wifetrue
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 4. "Wife"
Explanation :
Answer: D) Wife Explanation: So, the speaker is the mother of chotu. Kiran is wife of chotu's father. Chotu's father is not shown in the diagram.
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer :
Explanation :
Answer 1) True Answer 2) Cannot tell Answer 3) True

