GATE Practice Question and Answer
8Q: What state of matter is Jello? 1910 05b5cc6a2e4d2b4197774cbd7
5b5cc6a2e4d2b4197774cbd7- 1Liquidfalse
- 2Solidfalse
- 3Colloidtrue
- 4Gasfalse
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Answer : 3. "Colloid"
Explanation :
Answer: C) Colloid Explanation: Jello is a colloid, a semi-rigid structure i.e, semi-solid suspended in a liquid. When you Heat it up a bit and you'll break the protein bonds of the gelatin and it will liquefy completely and if you freeze, it becomes solid.
Q: 12 men complete a work in 9 days. After they have worked for 6 days, 4 more men join them. How many days will they take to complete the remaining work ? 1909 05b5cc6d7e4d2b4197774e700
5b5cc6d7e4d2b4197774e700- 12 daysfalse
- 22.5 daysfalse
- 32.25 daystrue
- 43 daysfalse
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Answer : 3. "2.25 days"
Explanation :
Answer: C) 2.25 days Explanation: 1 man's 1 day work = 1/108 12 men's 6 day's work = 1/9 x 6 = 2/3 Remaining work = 1 - 2/3 = 1/3 16 men's 1 day work = 1/108 x 16 = 4/274/27 work is done by them in 1 day. 1/3 work is done by them in 27/4 x 1/3 = 9/4 days.
Q: A laborer is engaged for 30 days on the condition that he receives Rs.25 for each day he works and is fined Rs.7.50 for each day is absent. He gets Rs.425 in all. For how many days was he absent ? 1908 05b5cc6dfe4d2b4197774ead0
5b5cc6dfe4d2b4197774ead0- 110 daystrue
- 214 daysfalse
- 311 daysfalse
- 49 daysfalse
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Answer : 1. "10 days"
Explanation :
Answer: A) 10 days Explanation: For 30 days he receives 30 x 25 = 750 Actually he gets 425 Therefore, Fine is 750 - 425 = 325 => No of days absent = 325/(25+7.50)= 10
Q: In what time a 360 m. long train moving at the speed of 44 km/hr will cross a 140 m. long bridge ? 1907 05b5cc6c8e4d2b4197774df0f
5b5cc6c8e4d2b4197774df0f- 136 secfalse
- 239 secfalse
- 341 sectrue
- 443 secfalse
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Answer : 3. "41 sec"
Explanation :
Answer: C) 41 sec Explanation: Speed = 44 kmph x 5/18 = 110/9 m/s We know that, Time = distance/speed Time = (360 + 140) / (110/9) = 500 x 9/110 = 41 sec.
Q: Simplify 2392-21+8-72=?2 1907 05b5cc6b9e4d2b4197774d775
5b5cc6b9e4d2b4197774d775- 14false
- 25false
- 36true
- 49false
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Answer : 3. "6"
Explanation :
Answer: C) 6 Explanation: ?2 = 2×78-21+8+49-148= 57 - 21=36=> ? = ±6
Q: There are n boxes and m fruits. If we put 3 fruits in each box 3 fruits will be excess. If we put 4 fruits in each box 1 box will be excess. Find number of boxes and fruits ? 1906 05b5cc711e4d2b4197774f3ff
5b5cc711e4d2b4197774f3ff- 13 & 9false
- 26 & 19false
- 37 & 24true
- 45 & 18false
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Answer : 3. "7 & 24"
Explanation :
Answer: C) 7 & 24 Explanation: 7 boxes & 24 Balls.Let, n = No. of boxes ; m = No. of fruits3n+3 = m---------->(1)4(n-1)= m---------->(2)=>4n-4 = 3n+3;=>4n-3n = 4+3n = 7Put n=7 in eqn(1)=> 3(7)+3 = m21+3 = mm = 24; Number of boxes = 7 and fruits = 24
Q: What is a Solution and what are the two parts of a solution? 1905 05b5cc6a4e4d2b4197774cc9f
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Answer :
Explanation :
A solution is a homogeneous type of mixture of two or more substances. A solution has two parts:: 1. A solute and 2. A solvent. The solute is the substance that dissolves, and the solvent is the majority of the solution.
Q: I go around and in the house but never touches the house. What am I? 1904 05b5cc632e4d2b4197774b9bd
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Answer :
Explanation :
Te Sun. From the time rising it goes around the house upto sunset, but never touches the house.