IIT JEE Practice Question and Answer
8Q: A is 30% more efficient than B. How much time will they, working together, take to complete a job which A alone could have done in 23 days ? 1889 05b5cc6dee4d2b4197774ea99
5b5cc6dee4d2b4197774ea99- 19 daysfalse
- 211 daysfalse
- 313 daystrue
- 415 daysfalse
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Answer : 3. "13 days"
Explanation :
Answer: C) 13 days Explanation: Ratio of times taken by A and B = 100 : 130 = 10 : 13.Suppose B takes x days to do the work. Then, 10 : 13 :: 23 : x => x = ( 23 x 13/10 ) => x = 299 /10. A's 1 day's work = 1/23 ;B's 1 day's work = 10/299 . (A + B)'s 1 day's work = ( 1/23 + 10/299 ) = 23/299 = 113 . Therefore, A and B together can complete the work in 13 days.
Q: Nepal Government announces public holidays during Nepalese President's visit to _____ 1889 05b5cc6eee4d2b4197774eefa
5b5cc6eee4d2b4197774eefa- 1Indiatrue
- 2Chinafalse
- 3Japanfalse
- 4Russiafalse
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Answer : 1. "India"
Explanation :
Answer: A) India Explanation: Nepalese President Bidya Devi Bhandari is arriving in New Delhi on a five-day visit to India. This will be Bhandari's first foreign trip after assuming the office in October 2015, following the promulgation of the new Constitution in Nepal.
Q: What type of bone is a phalanx? 1888 05b5cc632e4d2b4197774b9d0
5b5cc632e4d2b4197774b9d0- 1Short bonesfalse
- 2Jointsfalse
- 3Long bonestrue
- 4None of the abovefalse
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Answer : 3. "Long bones"
Explanation :
Answer: C) Long bones Explanation: The phalanges or a phalanx are/is digital bones in the hands and feet of most vertebrates. In primates, the thumbs and big toes have two phalanges while the other digits have three phalanges. The phalanges are classed as long bones.
Q: The Simon commission visited India in the year? 1888 05b5cc6a1e4d2b4197774caa9
5b5cc6a1e4d2b4197774caa9- 11933false
- 21939false
- 31921false
- 41927true
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Answer : 4. "1927"
Explanation :
Answer: D) 1927 Explanation: The British government appointed a commission under the chairmanship of Sir John Simon to report on India's constitutional progress for introducing constitutional reforms as had been promised in 1927.
Q: In a 100 litre of mixture the ratio of milk and water is 6:4. How much milk must be added to the mixture in order to make the ratio 3 : 1? 1888 05b5cc6b4e4d2b4197774d4e3
5b5cc6b4e4d2b4197774d4e3- 185false
- 260true
- 355false
- 445false
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Answer : 2. "60"
Explanation :
Answer: B) 60 Explanation: Let M litres milk be added => 60 + M40 = 31 => 60 + M = 120 => M = 60 lit.
Q: Karthik could cover a distance of 200 km in 22 days while resting for 2 hrs. per day. In how many days (approx) he will cover a distance of 250 km while resting for 2 hrs. per day and moving with 2/3rd of the previous speed ? 1888 05b5cc6cee4d2b4197774e203
5b5cc6cee4d2b4197774e203- 141.25 daystrue
- 237.5 daysfalse
- 339.75 daysfalse
- 440 daysfalse
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Answer : 1. "41.25 days"
Explanation :
Answer: A) 41.25 days Explanation: Given Karthik can cover the distance of 200 kms resting 2 hrs per day in 22 days. Let the initial speed be '1' Hence, Time = 22(24hrs - 2) Noe new speed = 2/3 Let the number of days he take be 'D' Therefore, 2224-2x3200=D24-2x2250 D = 11 x 3 x 5/4 = 41.25 days. = 41 1/4 days.
Q: Statements : National Aluminium Company has moved India from a position of shortage to self-sufficiency in the metal. Conclusions : a) Previously, India had to import aluminium.b) With this speed, it can soon become a foreign exchange earner. 1888 05b5cc715e4d2b4197774f418
5b5cc715e4d2b4197774f418- 1Only a followsfalse
- 2Only b followsfalse
- 3Neither a nor b followsfalse
- 4Both a and b followstrue
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Answer : 4. "Both a and b follows"
Explanation :
Answer: D) Both a and b follows Explanation: According to the statement, National Aluminium Company has moved India from a position of shortage in the past to self-sufficiency in the present. This means that previously, India had to import aluminium. So, I follows. Also, it can be deduced that if production increases at the same rate, India can export it in future. So, II also follows.
Q: What is not a reason christian missionaries went to Asia? 1888 05b5cc619e4d2b4197774b745
5b5cc619e4d2b4197774b745- Show AnswerHide Answer
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Answer :
Explanation :
To obtain exotic spices or to find trade items are not the reasons for christian missionaries went to Asia.