GATE Practice Question and Answer
8Q: In one year, the Amount collected for social welfare, of a village increased by 10% and in the next year, it decreased by 10%. If at the end of 2nd year, the amount was 7920, what was it in the beginning ? 1818 05b5cc6d8e4d2b4197774e773
5b5cc6d8e4d2b4197774e773- 18800false
- 28650false
- 38000true
- 48980false
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Answer : 3. "8000"
Explanation :
Answer: C) 8000 Explanation: Let the amount collected be 'A'Then, from the given conditions,A x 110/100 x 90/100 = 7920 A x 0.99 = 7920 A = 7920/0.99=> 8000
Q: What are the two types of pure substances? 1817 05b5cc69de4d2b4197774c8a1
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Answer :
Explanation :
An atom is the smallest particle of a substance. Chemical substances are divided into two major groups. They are 1. Pure Substances (and) 2. Mixtures. There are two types of pure substances that are Elements and Compounds. Elements : An element is a substance that is made up of only one kind of atoms and cannot be broken down into simpler substances by chemical means. Metals and Non- metals come under elements. Examples of elements are Iron, Silver, Gold, Mercury etc. Compounds : A Compound is a substance that is formed when two or more elements combine chemically. Examples of compounds are Water, Carbon dioxide, methane, vinegar etc. Mixtures : A Mixture is formed when two or more substances mixed together but not chemically combined. Example: Air.
Q: Two girls ate dinner together. After that they both ordered iced tea. One girl drank them very fast and had finished five in the time it took the other to drink just one. The girl who drank one died while the other survived. However, all of the drinks that were served turned out to contain poison. How did the girl who drank the most survive? 1817 05b5cc67be4d2b4197774c1ea
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Answer :
Explanation :
The poison was in the ice. When the girl drank the iced tea, the ice was still fully frozen. Gradually, as the ice cubes melted the poison was released into the drink. Hence, the girl who died, drunk the tea after the ice melted. So, she was died.
Q: Simplify 39.96% of 649.85 ÷13.07 = 45.14 - ? 1817 05b5cc690e4d2b4197774c45a
5b5cc690e4d2b4197774c45a- 125true
- 226false
- 327false
- 428false
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Answer : 1. "25"
Explanation :
Answer: A) 25 Explanation: This can be easily simplified by Approximation process Given 39.96% of 649.85 ÷13.07 = 45.14 - ? can be written as 40% of 650 ÷13 = 45 - ? 40 x 65010013 = 45 - ?? = 45 - 20? = 25.
Q: India is the largest producer of 1815 05b5cc69ae4d2b4197774c76e
5b5cc69ae4d2b4197774c76e- 1Cottonfalse
- 2Milkfalse
- 3Mangoesfalse
- 4All the abovetrue
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Answer : 4. "All the above"
Explanation :
Answer: D) All the above Explanation: As per the latest updates, India is : Largest producer of milk. Largest producer of millets in the world. Largest producer of jute. Largest producer of ginger. Largest producer of bananas. Largest producer of castor oil seeds. Largest producer of mangoes. Largest producer of safflower oil seeds. Largest producer of papayas. Largest producer of cottonseed (As per International Cotton Advisory Committee (ICAC) report for the month of March 2017) Second largest producer of tea, the first position being held by China. Second largest producer of sugarcane, the first position being held by Brazil. Second largest producer of wheat, the first position being held by China. Second largest producer of onions, the first position being held by China. Second largest producer of potatoes, the first position being held by China. Second largest producer of garlic, the first position being held by China. Second largest producer of rice, the first position being held by China. Second largest producer of cement., next to China. Second largest producer of silk, the first position being held by China.
Q: Four person A, B, C and D. The sum of their present age is 176. Four years ago ratio of their age was 11: 9 : 6 : 14, then find who is eldest and youngest among them ? 1815 05b5cc6c1e4d2b4197774db82
5b5cc6c1e4d2b4197774db82- 1A is eldest & C is youngestfalse
- 2D is eldest & C is youngesttrue
- 3C is eldest & A is youngestfalse
- 4A is eldest & B is youngestfalse
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Answer : 2. "D is eldest & C is youngest"
Explanation :
Answer: B) D is eldest & C is youngest Explanation: Given sum of present ages of A, B, C & D A + B + C + D = 176 and also given that, (A-4) : (B-4) : (C-4) : (D-4) = 11 : 9 : 6 : 14 Let the ratio = x => A-4 + B-4 + C-4 + D-4 = 11x + 9x + 6x + 14x => (A + B + C + D ) - 16 = 40x => 176 - 16 = 40x => x = 4 => A = 44 + 4 = 48 => B = 40 => C = 28 => D = 60 Therefore, from the above conclusions D is eldest with 60 years and C is youngest with 28 years of ages.
Q: Whale : Mammal :: Rat : ? 1815 05b5cc771e4d2b4197774ffdf
5b5cc771e4d2b4197774ffdf- 1Rodenttrue
- 2Mammalfalse
- 3Amphibianfalse
- 4Reptilefalse
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Answer : 1. "Rodent"
Explanation :
Answer: A) Rodent Explanation: Whale belongs to Mammal category whereas Rat belongs to Rodent.
Q: A word i know, six letters it contains, subtract just one and twelve remains. What is it? 1815 05b5cc62ae4d2b4197774b8aa
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Answer :
Explanation :
DOZENS. If we remove 'S' from it, it is DOZEN which tells that 12.

