GATE Practice Question and Answer
8Q: Anu's present age is 9 years more than that of what Raj's age will be after five years. Raj's present age is seven years more than that of what Renu's age was 4 years ago. Renu's present age is 19 years. What will be Anu's age after 5 years ? 1604 05b5cc6cae4d2b4197774dfd4
5b5cc6cae4d2b4197774dfd4- 139 yrsfalse
- 236 yrsfalse
- 346 yrsfalse
- 441 yrstrue
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Answer : 4. "41 yrs"
Explanation :
Answer: D) 41 yrs Explanation: Anu = (Raj + 5) + 9 = Raj + 14 -------- (I) Raj = (Renu - 4) + 7 = Renu + 3 ------- (II) Raj's age = 19 + 3 = 22 years After 5 years Anu's age = 22 + 14 + 5 = 41 years
Q: Rangaswamy Cup is associated with 1604 05b5cc6a5e4d2b4197774ccd1
5b5cc6a5e4d2b4197774ccd1- 1Footballfalse
- 2Badmintonfalse
- 3Cricketfalse
- 4Hockeytrue
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Answer : 4. "Hockey"
Explanation :
Answer: D) Hockey Explanation:
Q: A can do a piece of work in 15 days and B can do it in 16 days and C can do it 24 days. They started the work together and A leaves after 3 days and B leaves after 4 days from the beginning. How long will work lost ? 1604 05b5cc6dae4d2b4197774e8dc
5b5cc6dae4d2b4197774e8dc- 110 2/3 daysfalse
- 213 1/5 daystrue
- 312 2/3 daysfalse
- 411 5/7 daysfalse
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Answer : 2. "13 1/5 days"
Explanation :
Answer: B) 13 1/5 days Explanation: 3/15 + 4/16 + x/24 = 1 ⇒x=1315
Q: Is steel a compound? 1604 05b5cc62ae4d2b4197774b8b5
5b5cc62ae4d2b4197774b8b5- 1TRUEfalse
- 2FALSEtrue
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Answer : 2. "FALSE"
Explanation :
Answer: B) FALSE Explanation: Steel is not a compound or element. Steel is an alloy of iron and carbon and other elements and hence it is a mixture. Because of its high tensile strength and low cost, it is a major component used in buildings, infrastructure, tools, ships, automobiles, machines, appliances, and weapons.
Q: World Suicide Prevention Day (WSPD) is observed every year on _______ 1603 05b5cc6c6e4d2b4197774de04
5b5cc6c6e4d2b4197774de04- 11 Septemberfalse
- 27 Septemberfalse
- 3D) is observed every year on _______ A) 1 September B) 7 September C)false
- 4is observed every year on _______ A) 1 September B) 7 September C) 9 September D) 10 Septembertrue
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Answer : 4. "is observed every year on _______
A) 1 September
B) 7 September
C) 9 September
D) 10 September"
Explanation :
Answer: D) 10 September Explanation: World Suicide Prevention Day (WSPD) is an awareness day celebrated on 10 September every year, keeping in mind the end goal to give overall commitment and action to anticipate suicides, with various activities around the world since 2003.
Q: Is air homogeneous or heterogeneous? 1603 05b5cc642e4d2b4197774bb52
5b5cc642e4d2b4197774bb52- 1homogeneoustrue
- 2heterogeneousfalse
- 3Both A & Bfalse
- 4None of the abovefalse
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Answer : 1. "homogeneous"
Explanation :
Answer: A) homogeneous Explanation: A Mixture is a material made up of two or more different substances which are mixed. Mixtures can be either homogeneous or heterogeneous. * A homogeneous mixture is a type of mixture in which the composition is uniform and every part of the solution has the same properties. * A heterogeneous mixture is a type of mixture in which the components can be seen, as there are two or more phases present. Air is a homogeneous mixture of the gaseous substances nitrogen, oxygen, and smaller amounts of other substances.
Q: What will be the ratio of simple interest earned by certain amount at the same rate of interestfor 4 years and 6 years ? 1603 05b5cc767e4d2b4197774fe15
5b5cc767e4d2b4197774fe15- 11:2false
- 22:1false
- 32:3true
- 43:2false
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Answer : 3. "2:3"
Explanation :
Answer: C) 2:3 Explanation: Let p be the principle amount And R% be the rate of interest Then, required ratio =P×4×R100P×6×R100 ⇒4PR6PR= 2:3
Q: In a mixture of milk and water the proportion of water by weight was 75%. If in 60 gm of mixture 15 gm water was added, what would be the percentage of water ? (Weight in gm) 1603 05b5cc73de4d2b4197774f943
5b5cc73de4d2b4197774f943- 180%true
- 270%false
- 375%false
- 462%false
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Answer : 1. "80%"
Explanation :
Answer: A) 80% Explanation: Water in 60 gm mixture=60 x 75/100 = 45 gm. and Milk = 15 gm. After adding 15 gm. of water in mixture, total water = 45 + 15 = 60 gm and weight of a mixture = 60 + 15 = 75 gm. So % of water = 100 x 60/75 = 80%.

