GATE Practice Question and Answer
8Q: A man whose speed is 4.5 kmph in still water rows to a certain upstream point and back to the starting point in a river which flows at 1.5 kmph, find his average speed for the total journey ? 2056 05b5cc6dce4d2b4197774e997
5b5cc6dce4d2b4197774e997- 15 kmphfalse
- 27 kmphfalse
- 33 kmphfalse
- 44 kmphtrue
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Answer : 4. "4 kmph"
Explanation :
Answer: D) 4 kmph Explanation: Speed of Man = 4.5 kmphSpeed of stream = 1.5 kmphSpeed in DownStream = 6 kmphSpeed in UpStream = 3 kmphAverage Speed = (2 x 6 x 3)/9 = 4 kmph.
Q: Pradeep correctly remembers that his mother's is before twenty third February but after ninteenth February, whereas his brother correctly remembers that their mother's birthday is not on or after twentysecond February. On which day in February is definitely their mother's birthday ? 2055 05b5cc758e4d2b4197774fc0f
5b5cc758e4d2b4197774fc0f- 120 or 21true
- 220false
- 321false
- 4Nonefalse
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Answer : 1. "20 or 21"
Explanation :
Answer: A) 20 or 21 Explanation: According to Pradeep : 20,21 or 22...(1)According to his brother : not 22....(2)From (1)&(2), the birthday falls on February 20 or 21.
Q: Statement: Ministry of Tourism in its one of the reports revealed that due to recent social disturbance in the country, the number of foreign tourists has decreased considerably, which resulted in a financial loss of Rs 100 crore.Courses of action:a. The Government should provide financial support to the tourism sector.b. Foreign tourists should be informed that they visit the country at their risk. 2055 05b5cc764e4d2b4197774fd8f
5b5cc764e4d2b4197774fd8f- 1Only b followsfalse
- 2Only a followsfalse
- 3Both a & b followsfalse
- 4Neither a nor b followstrue
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Answer : 4. "Neither a nor b follows"
Explanation :
Answer: D) Neither a nor b follows Explanation: Financial support to the tourism sector is not a permanent solution. Secondly, constant risk for the foreign tourists will never encourage tourism in India. Hence, none of the course action is the right solution in this direction.
Q: What is the Iupac name for the compound shown below. 2054 05b5cc662e4d2b4197774be6b
5b5cc662e4d2b4197774be6b- 11-Bromo-3-chlorocyclohexenefalse
- 22-Bromo-6-chlorocyclohex-1-enefalse
- 36-Bromo-2-chlorocyclohexenefalse
- 43-Bromo-1-chlorocyclohex-1-enetrue
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Answer : 4. "3-Bromo-1-chlorocyclohex-1-ene"
Explanation :
Answer: D) 3-Bromo-1-chlorocyclohex-1-ene Explanation: In chemical nomenclature, the IUPAC nomenclature of organic chemistry is a systematic method of naming organic chemical compounds as recommended by the International Union of Pure and Applied Chemistry (IUPAC).
Q: In a party there are male and female members. If 15 female quit then the number of females will become double the number of males. If 45 males quit no. of female becomes five times the number of males. Find the number of females ? 2054 05b5cc741e4d2b4197774f9ef
5b5cc741e4d2b4197774f9ef- 1175true
- 2145false
- 3165false
- 4135false
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Answer : 1. "175"
Explanation :
Answer: A) 175 Explanation: Let the number of males be 'M'Let the number of females be 'F'From the given conditions,(F-15)=2M.....(i)F=5(M-45).....(ii)By solving the equations (1) & (2) we get M = 80 Then substitute M = 80 in (1)F = 2M + 15F = 2 x 80 + 15=> F = 175Therefore, number of males = 80 and females = 175 in the party.
Q: What important polymer is located in the nucleus? 2052 05b5cc611e4d2b4197774b650
5b5cc611e4d2b4197774b650- 1Ribosomesfalse
- 2Chromosomesfalse
- 3DNAtrue
- 4Proteinsfalse
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Answer : 3. "DNA"
Explanation :
Answer: C) DNA Explanation: The most important polymer present in the nucleus is DNA- the master molecule. It is a polymer of Nucleotides.
Q: A letter lock consists of three rings each marked with six different letters. The number of distinct unsuccessful attempts to open the lock is at the most ? 2051 05b5cc6e1e4d2b4197774ebde
5b5cc6e1e4d2b4197774ebde- 1215true
- 2268false
- 3254false
- 4216false
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Answer : 1. "215"
Explanation :
Answer: A) 215 Explanation: Since each ring consists of six different letters, the total number of attempts possible with the three rings is = 6 x 6 x 6 = 216. Of these attempts, one of them is a successful attempt. Maximum number of unsuccessful attempts = 216 - 1 = 215.
Q: What profit percent is made by selling an article at a certain price, if by selling at 2/3rd of that price, there would be a loss of 20% ? 2051 05b5cc6dbe4d2b4197774e937
5b5cc6dbe4d2b4197774e937- 130 %false
- 225 %false
- 315 %false
- 420 %true
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Answer : 4. "20 %"
Explanation :
Answer: D) 20 % Explanation: SP2 = 2/3 SP1CP = 100SP2 = 802/3 SP1 = 80 SP1 = 120100 --- 20 => 20%