IIT JEE Practice Question and Answer
8Q: The most healthy edible oil for heart is 1779 05b5cc6b9e4d2b4197774d6da
5b5cc6b9e4d2b4197774d6da- 1Almond Oilfalse
- 2Sesame Oilfalse
- 3Mustard Oilfalse
- 4Olive Oiltrue
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Answer : 4. "Olive Oil"
Explanation :
Answer: D) Olive Oil Explanation:
Q: Which type of forests occupies the highest percentage of area in India ? 1778 25b5cc6d6e4d2b4197774e693
5b5cc6d6e4d2b4197774e693- 1Savanna & desert vegetationfalse
- 2Tropical deciduoustrue
- 3Tropical Rainforestsfalse
- 4Equatorial evergreenfalse
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Answer : 2. "Tropical deciduous"
Explanation :
Answer: B) Tropical deciduous Explanation: Tropical Deciduous Forests: They are also called the “Monsoon forests”. They grow in the areas with annual rainfall of 70-200 cm. Sandal wood, Shisam, Mahua, Sal, Teak and Bamboo are important species of trees. Moist deciduous and the dry deciduous forests are two major categories of these forests.
Q: Pointing to a photograph, a man said, "I have no brother or sister but that man’s father is my father’s son." Whose photograph was it? 1778 05b5cc76ae4d2b4197774fe5b
5b5cc76ae4d2b4197774fe5b- 1His uncle'sfalse
- 2His nephew'sfalse
- 3His son'strue
- 4His Cousin'sfalse
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Answer : 3. "His son's"
Explanation :
Answer: C) His son's Explanation: Since the narrator has no brother, his father’s son is he himself. So, the man who is talking is the father of the man in the photograph. Thus, the man in the photograph is his son.
Q: Find the odd one in the given series ? 5-20-25, 10-40-50, 4-15-24, 25-100-125 1777 05b5cc6dde4d2b4197774e9ec
5b5cc6dde4d2b4197774e9ec- 14-15-24true
- 25-20-25false
- 310-40-50false
- 425-100-125false
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Answer : 1. "4-15-24"
Explanation :
Answer: A) 4-15-24 Explanation: In each term second two numbers are multiples of the first number. But in 4-15-24 15 is not multiple of 4.
Q: Which continent has the least countries? 1777 05b5cc672e4d2b4197774c0b9
5b5cc672e4d2b4197774c0b9- 1Africafalse
- 2South Americafalse
- 3Antarcticatrue
- 4Europefalse
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Answer : 3. "Antarctica"
Explanation :
Answer: C) Antarctica Explanation: Africa - 54 countries South America - 12 countries Antarctica - 0 countries Europe - 43 countries. Hence, Antarctica continent has the least countries.
Q: Which structure is common to plant and animal cells? 1775 05b5cc6a2e4d2b4197774cbb3
5b5cc6a2e4d2b4197774cbb3- 1Centriolefalse
- 2Chloroplastfalse
- 3Central Vacuolefalse
- 4Mitochondriatrue
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Answer : 4. "Mitochondria"
Explanation :
Answer: D) Mitochondria Explanation: Mitochondria are present in both plant and animal cells.
Q: It costs Rs. p each to send the first thousand messsages and Rs. q to send each subsequent one . If r is greater than 1,000, how many Rupees will it cost to send r messages ? 1775 05b5cc6cfe4d2b4197774e2ef
5b5cc6cfe4d2b4197774e2ef- 11000 (r - p) + pqfalse
- 21000 p + qrfalse
- 31000 (r - q) + prfalse
- 41000(p - q) + qrtrue
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Answer : 4. "1000(p - q) + qr"
Explanation :
Answer: D) 1000(p - q) + qr Explanation: We need to find the total cost to send r messsages, r > 1000. The first 1000 messsages will cost Rs.p each (Or) The total cost of first 1000 messsages = Rs.1000p The remaining (r - 1000) messsages will cost Rs.q each (Or) The cost of the (r - 1000) = Rs.(r - 1000)y Therefore, total cost = 1000p + rq - 1000q = 1000(p - q) + qr
Q: A boat travels 72 km downstream in 8 hours and 84 km upstream in 12 hours. Find the speed of the boat in still water and the speed of the water current ? 1775 05b5cc71ee4d2b4197774f581
5b5cc71ee4d2b4197774f581- 19 and 3 kmphfalse
- 26 and 7 kmphfalse
- 38 and 1 kmphtrue
- 47 and 2 kmphfalse
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Answer : 3. "8 and 1 kmph"
Explanation :
Answer: C) 8 and 1 kmph Explanation: Downstream speed = 72km/8hrs = 9 kmphupstream speed = 84km/12hrs = 7 kmphspeed of boat = avg of downstream and upstream speedsspeed of boat = (9+7)/2kmph = 8 kmph.current speed = half of the difference of downstream and upstream speedscurrend speed = (9-7)/2kmph = 1 kmph

