IIT JEE Practice Question and Answer
8Q: Two trains start from same place at same time at right angles to each other. Their speeds are 36km/hr and 48km/hr respectively. After 30 seconds the distance between them will be ? 2673 05b5cc731e4d2b4197774f819
5b5cc731e4d2b4197774f819- 1900 mtsfalse
- 2300 mtsfalse
- 3250 mtsfalse
- 4500 mtstrue
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Answer : 4. "500 mts"
Explanation :
Answer: D) 500 mts Explanation: Using pythagarous theorem,distance travelled by first train = 36x5/18x30 = 300mdistance travelled by second train = 48x5/18x30 = 400mso distance between them =√( 90000 + 160000) = √250000 = 500mts.
Q: One major cause of floods is 2671 05b5cc699e4d2b4197774c6d7
5b5cc699e4d2b4197774c6d7- 1light rain over a large areafalse
- 2a decrease in stream dischargefalse
- 3rapid spring snowmelttrue
- 4increased capacity of stream channelsfalse
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Answer : 3. "rapid spring snowmelt"
Explanation :
Answer: C) rapid spring snowmelt Explanation: There are lots of reasons behind the flood in any area but the main reason is a heavy downpour or rapid snowmelt can flood canyons with a mixture of soil, rock, and water is a major cause of floods. When the spring times come, sometimes there's a lot of warmth that suddenly comes, especially nowadays when there are things such as global warming. So the snow melts and large amounts of water can flood the fields that are often found at the foot of a mountain or similar things. But they may also be caused by deforestation, drainage channel modification from a landslide, earthquake or volcanic eruption. Examples include outburst floods and lahars.
Q: Majid Gyre is a feature of which of the following Oceans ? 2668 05b5cc6d6e4d2b4197774e68e
5b5cc6d6e4d2b4197774e68e- 1Indian Oceantrue
- 2Pacific Oceanfalse
- 3Atlantic Oceanfalse
- 4Arctic Oceanfalse
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Answer : 1. "Indian Ocean"
Explanation :
Answer: A) Indian Ocean Explanation: The Indian Ocean consists of one gyre, the Indian Ocean (Majid) Gyre, which exists mostly in the Southern Hemisphere. It is named after Ahmad Bin Majid, the 15th-century Arab mariner. Following shows the Oceans and their respective Gyres Indian Ocean - Majid Gyre North Atlantic Ocean - Columbus Gyre South Atlantic Ocean - Prince Henry Gyre North Pacific Ocean - Turtle Gyre South Pacific Ocean - Heyerdahl Gyre
Q: Which is true of loyalty boards? 2668 05b5cc67ee4d2b4197774c234
5b5cc67ee4d2b4197774c234- 1They did not care about individual civil rightsfalse
- 2They carefully reveiwed all evidence in open courtfalse
- 3They were careful to pertect the civil rights of government workerstrue
- 4They asked for voluntary statementsfalse
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Answer : 3. "They were careful to pertect the civil rights of government workers"
Explanation :
Answer: C) They were careful to pertect the civil rights of government workers Explanation:
Q: A constructor estimates that 4 people can paint Mr. Karthik's house in 6 days. If he uses 5 people instead of 4, how long will they take to complete the job ? 2667 05b5cc74ae4d2b4197774fac2
5b5cc74ae4d2b4197774fac2- 13 daysfalse
- 226/3 daysfalse
- 313/4 daysfalse
- 424/5 daystrue
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Answer : 4. "24/5 days"
Explanation :
Answer: D) 24/5 days Explanation: we know that m1 x d1 = m2 x d2=> 4 x 6 = 5 x dwhere d = no. of days taken by 5 men to paintd = 24/5 days.
Q: What is the 13th letter of the English Alphabet? 2666 05b5cc6b5e4d2b4197774d52f
5b5cc6b5e4d2b4197774d52f- 1M & Ntrue
- 2M & Mfalse
- 3N & Nfalse
- 4N & Lfalse
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Answer : 1. "M & N"
Explanation :
Answer: A) M & N Explanation: There are 26 English Alphabets. They are: A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z. Therefore, from the left end the 13th letter is M and is Consonent. And from the right end the 13th letter is N and is Consonent.
Q: A family has a man, his wife, their four sons and their wives and one daughter. The family of every son also has 3 sons and one daughter. Find out the total number of female members in the family ? 2664 05b5cc758e4d2b4197774fbe5
5b5cc758e4d2b4197774fbe5- 112false
- 28false
- 39false
- 410true
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Answer : 4. "10"
Explanation :
Answer: D) 10 Explanation: 1) Man's wife. = 12) Man's 4 son's wives. = 43) Man's daughter. = 14) 4 son's has each one daughter. = 4Therefore, total number of female members in the family = 1+4+1+4 = 10.
Q: Arun and Varun started business in partnership investing Rs. 20,000 and Rs. 15,000 respectively. After six months, Akhil joined them with Rs. 20,000. What will be Varun's share in the total profit of Rs. 25,000 earned at the end of 2 years from the starting of the business ? 2663 05b5cc6fbe4d2b4197774f0f1
5b5cc6fbe4d2b4197774f0f1- 1Rs. 7500true
- 2Rs. 4520false
- 3Rs. 8750false
- 4Rs. 6350false
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Answer : 1. "Rs. 7500"
Explanation :
Answer: A) Rs. 7500 Explanation: Arun : Varun : Akhil = (20000 x 24) : (15000 x 24) : (20000 x 18) = 4:3:3 B's share = 25000 x 3/10 = Rs. 7500.