GATE Practice Question and Answer

Q: Translator program used in assembly language 2154 0

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    Assembler
    Correct
    Wrong
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    Interpreter
    Correct
    Wrong
  • 3
    Compiler
    Correct
    Wrong
  • 4
    Operating system
    Correct
    Wrong
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Answer : 1. "Assembler"
Explanation :

Answer: A) Assembler Explanation: Assemblers are used to translate a program written in a low-level assembly language into a machine code (object code) file so it can be used and executed by the computer.   Hence, Assembler is the translator program used in assembly language.

Q: A work which could be finished in 11 days was finished 4 days earlier after 4 more men joined. The number of men employed was ? 2154 0

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    7
    Correct
    Wrong
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    8
    Correct
    Wrong
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    9
    Correct
    Wrong
  • 4
    10
    Correct
    Wrong
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Answer : 1. "7"
Explanation :

Answer: A) 7 Explanation: As the work is sameM1D1 = M2D2 Here Let the number of men employed was M=> 11M = 7(M+4)=> 11M - 7M = 28=> M = 7

Q: Which of the following elements is a metal? 2153 0

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    Se
    Correct
    Wrong
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    I
    Correct
    Wrong
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    Zn
    Correct
    Wrong
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    S
    Correct
    Wrong
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Answer : 3. "Zn"
Explanation :

Answer: C) Zn Explanation: In chemistry, a metal is an element that readily forms positive ions (cations) and has metallic bonds. Metals are opaque, lustrous elements that are good conductors of heat and electricity. Most metals are malleable and ductile and are, in general, denser than the other elemental substances.   Examples of metals are aluminium, copper, iron, tin, gold, lead, silver, titanium, uranium, and zinc.   Here Se - Selenium is an element but is not a metal, S - Sulphur is not a metal and I - Iodine is also not a metal.   Hence, Zn - Zinc is the only metal in the given options.

Q: Which of the following elements has the highest electronegativity? 2153 0

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    Chlorine
    Correct
    Wrong
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    Bromine
    Correct
    Wrong
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    Fluorine
    Correct
    Wrong
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    Helium
    Correct
    Wrong
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Answer : 3. "Fluorine"
Explanation :

Answer: C) Fluorine Explanation: Electronegativity refers to the ability of an atom to attract shared electrons in a covalent bond. The higher the value of the electronegativity, the more strongly that element attracts the shared electrons. Electronegativity increases from bottom to top in groups, and increases from left to right across periods. Thus, fluorine is the most electronegative element and lithium is the least.

Q: A jogger running at 9 km/hr along side a railway track is 260 m ahead of the engine of a 140 m long train running at 45 km/hr in the same direction. In how much time will the train pass the jogger ? 2152 0

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    25 sec
    Correct
    Wrong
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    40 sec
    Correct
    Wrong
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    38 sec
    Correct
    Wrong
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    32 sec
    Correct
    Wrong
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Answer : 2. "40 sec"
Explanation :

Answer: B) 40 sec Explanation: Speed of train relative to jogger = 45 - 9 = 36 km/hr.= 36 x 5/18 = 10 m/sec. Distance to be covered = 260 + 140 = 400 m. Time taken = 400/10 = 40 sec.

Q: A is 30% more efficient than B. How much time will they, working together, take to complete a job which A alone could have done in 23 days  ? 2152 0

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    9 days
    Correct
    Wrong
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    11 days
    Correct
    Wrong
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    13 days
    Correct
    Wrong
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    15 days
    Correct
    Wrong
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Answer : 3. "13 days"
Explanation :

Answer: C) 13 days Explanation: Ratio of times taken by A and B = 100 : 130 = 10 : 13.Suppose B takes x days to do the work. Then, 10 : 13 :: 23 : x     =>     x = ( 23 x 13/10 )     =>     x = 299 /10. A's 1 day's work = 1/23 ;B's 1 day's work = 10/299 . (A + B)'s 1 day's work = ( 1/23 + 10/299 ) = 23/299 = 113 . Therefore, A and B together can complete the work in 13 days.

Q: Which startup acquired Google's satellite imaging business in 2017 ? 2152 0

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    NovaWurks
    Correct
    Wrong
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    PlanetiQ
    Correct
    Wrong
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    Planet Labs
    Correct
    Wrong
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    UrtheCast
    Correct
    Wrong
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Answer : 3. "Planet Labs"
Explanation :

Answer: C) Planet Labs Explanation: American startup Planet Labs, that launches small satellites into orbit and sells the imagery, has announced its acquisition of Google's 'Terra Bella' satellite business. As part of the agreement, 60 Google employees will join the startup founded by ex-NASA scientists. Terra Bella, was acquired by Google in 2014 for $500 million and that time it was known as Skybox Imaging.

Q: Animal migration on savannas is often governed by 2151 0

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    Rainfall
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    Distance
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    Reproduction
    Correct
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    Fire
    Correct
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Answer : 1. "Rainfall"
Explanation :

Answer: A) Rainfall Explanation: Savannas are home to a wide diversity of animals. Many animals of the savanna migrate throughout the year, searching for food and water. Many of the droughts are seasonal and hit one area before another, so animals are constantly following the rains.   Hence, Rain fall is what often governs animal migration on savannas.

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