GATE Practice Question and Answer
8Q: What looks back but cannot see? 1383 05b5cc636e4d2b4197774ba14
5b5cc636e4d2b4197774ba14- Show AnswerHide Answer
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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 05b5cc636e4d2b4197774ba09
5b5cc636e4d2b4197774ba09- 1316false
- 2384false
- 3450true
- 4479false
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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 05b5cc636e4d2b4197774b9ff
5b5cc636e4d2b4197774b9ff- 12false
- 21.5true
- 31.25false
- 42.5false
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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 05b5cc636e4d2b4197774b9fa
5b5cc636e4d2b4197774b9fa- 1politicianfalse
- 2constituentsfalse
- 3attorneyfalse
- 4lawtrue
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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 05b5cc636e4d2b4197774b9f0
5b5cc636e4d2b4197774b9f0- 1Umbrellafalse
- 2Liftfalse
- 3Stairstrue
- 4All the abovefalse
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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 05b5cc636e4d2b4197774b9eb
5b5cc636e4d2b4197774b9eb- 12false
- 26false
- 34true
- 48false
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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 05b5cc632e4d2b4197774b9d5
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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 05b5cc632e4d2b4197774b9cb
5b5cc632e4d2b4197774b9cb- 1Hfalse
- 2Asfalse
- 3Fetrue
- 4Srfalse
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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.

