GATE Practice Question and Answer

Q: What looks back but cannot see? 1383 0

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Answer :
Explanation :

Reflection is what which looks back but can't see.

Q: What is the missing number in 5, 14, 42, 107, 233, ? 3319 0

  • 1
    316
    Correct
    Wrong
  • 2
    384
    Correct
    Wrong
  • 3
    450
    Correct
    Wrong
  • 4
    479
    Correct
    Wrong
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Answer : 3. "450"
Explanation :

Answer: C) 450 Explanation: Given Series is 5, 14, 42, 107, 233, _? 5, 14, 42, 107, 233, _? Differences is 9, 28, 65, 126 9 = 2^3 + 1 28 = 3^3 + 1 65 = 4^3 + 1 126 = 5^3 + 1 Now, next difference must be 6^3 + 1 = 217 Hence, next number in the given series = 233 + 217 = 450.

Q: Five boxes of bananas sell for Rs. 30. how many boxes can you buy for Rs.9? 2643 0

  • 1
    2
    Correct
    Wrong
  • 2
    1.5
    Correct
    Wrong
  • 3
    1.25
    Correct
    Wrong
  • 4
    2.5
    Correct
    Wrong
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Answer : 2. "1.5"
Explanation :

Answer: B) 1.5 Explanation: Given Five boxes of bananas sell for Rs. 30. => 1 Box of Bananas for = 30/5 = Rs. 6   Then, for Rs. 9 => 9/6 = 3/2 = 1.5   Hence, for Rs. 9, 1.5 box of bananas can buy.

Q: Artist is to painting as senator is to 4103 0

  • 1
    politician
    Correct
    Wrong
  • 2
    constituents
    Correct
    Wrong
  • 3
    attorney
    Correct
    Wrong
  • 4
    law
    Correct
    Wrong
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Answer : 4. "law"
Explanation :

Answer: D) law Explanation: As we know that an artist makes paintings, similarly, a senator makes laws.   Hence, Artist : Painting :: Senator : Law.

Q: What goes up and down the stairs without moving? 1652 0

  • 1
    Umbrella
    Correct
    Wrong
  • 2
    Lift
    Correct
    Wrong
  • 3
    Stairs
    Correct
    Wrong
  • 4
    All the above
    Correct
    Wrong
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Answer : 3. "Stairs"
Explanation :

Answer: C) Stairs Explanation: Those are stairs which goes up and down without moving.

Q: How many right angles does a square have? 1778 0

  • 1
    2
    Correct
    Wrong
  • 2
    6
    Correct
    Wrong
  • 3
    4
    Correct
    Wrong
  • 4
    8
    Correct
    Wrong
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Answer : 3. "4"
Explanation :

Answer: C) 4 Explanation: A square and a rectangle each have 4 right (90 deg) angles.  Both square and rctangle have 4 sides and 4 angles, but the only difference is square is a rectangle with all sides equal.

Q: Atomic mass of first 30 elements? 1214 0

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Answer :
Explanation :

Here I give you the first 30 Atomic elements names and their Atomic masses.   Atomic number      Element        Atomic mass                                      1                 Hydrogen           1         2                  Helium              4         3                 Lithium              6.94         4                Beryllium            9.01         5                  Boron               10.81         6                Carbon               12.01         7                Nitrogen             14.01         8                Oxygen              15.99         9                Fluorine              19.00        10                Neon                 20.18        11               Sodium               22.99        12             Magnesium           25.31        13             Aluminium            26.98        14               Silicon                28.09        15             Phosphorus           30.97        16               Sulphur               32.07        17               Chlorine              35.45        18                Argon                 39.95        19             Potassium              39.10        20              Calcium                40.08        21             Scandium              44.96        22             Titanium               47.87        23            Vanadium              50.94        24             Chromium            24. 52        25            Manganese            54.94        26                Iron                  55.85        27              Cobalt                 58.93        28               Nickel                 58.69        29              Copper                 63.55        30                Zinc                   65.41

Q: Which one of the following elements is a transition element? 1263 0

  • 1
    H
    Correct
    Wrong
  • 2
    As
    Correct
    Wrong
  • 3
    Fe
    Correct
    Wrong
  • 4
    Sr
    Correct
    Wrong
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Answer : 3. "Fe"
Explanation :

Answer: C) Fe Explanation: In chemistry, the term transition metal has three possible meanings: The IUPAC definition defines a transition metal as "an element whose atom has a partially filled d sub-shell, or which can give rise to cations with an incomplete d sub-shell". Any of the set of metallic elements occupying a central block (Groups IVB–VIII, IB, and IIB, or 4–12) in the periodic table, e.g. iron, manganese, chromium, and copper. Chemically they show variable valency and a strong tendency to form coordination compounds, and many of their compounds are coloured.   Here in the given options, only iron (Fe) is a transition metal since Strontium is an alkaline earth, arsenic is a metalloid, hydrogen is (normally) a diatomic gas.

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