GATE Practice Question and Answer
8Q: At what time will B catch up with A, if A starts from a place at 11.00 A.M. and travels at a speed of 3.5 kmph, B starts at 1.00 P.M. and travels with speeds of 1 kmph for 1 hour, 2 kmph for the next 1 hour, 3 kmph for the next 1 hour and so on. 2432 05b5cc715e4d2b4197774f409
5b5cc715e4d2b4197774f409- 18 : 47 pmfalse
- 26 : 40 pmfalse
- 38 : 42 pmfalse
- 47 : 40 pmtrue
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Answer : 4. "7 : 40 pm"
Explanation :
Answer: D) 7 : 40 pm Explanation: At 1 pm ... Distance between A and B = 2x3.5 = 7 kmsat 2 pm .....Distance between A and B = 7 + 3.5 - 1 = 9.5 kmsAt 3 pm ....Distance between A and B = 9.5 + 3.5 - 2 = 11 kms.......At 7 pm distance between A and B = 3 kms.From 7 pm to 8 pm, speed of A = 3.5 kmphspeed of B = 8 kmphRelative speed = 4.5 kmph Time taken by B to meet A = 3/4.5 hrs = 30/45 hrs = 120/3 mins = 40 mins. So meeting time is 7 : 40 PM.
Q: If the sides of a triangle are 26 cm, 24 cm and 10 cm, what is its area ? 2432 05b5cc6dce4d2b4197774e988
5b5cc6dce4d2b4197774e988- 1108 sq.cmfalse
- 2112 sq.cmfalse
- 3116 sq.cmfalse
- 4120 sq.cmtrue
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Answer : 4. "120 sq.cm"
Explanation :
Answer: D) 120 sq.cm Explanation: The triangle with sides 26 cm, 24 cm and 10 cm is right angled, where the hypotenuse is 26 cm. Area of the triangle =1/2 x base x height => 1/2 x 24 x 10 = 120 sq.cm
Q: Which elements are malleable and good conductors of electricity? 2421 05b5cc619e4d2b4197774b714
5b5cc619e4d2b4197774b714- 1tin and silvertrue
- 2iodine and silverfalse
- 3tin and xenonfalse
- 4iodine and xenonfalse
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Answer : 1. "tin and silver"
Explanation :
Answer: A) tin and silver Explanation: Tin and Silver are malleable and good conductors of electricity. The other combinations have a non metal in them which are bad conductors.
Q: Which best describes Genes? 2416 05b5cc601e4d2b4197774b467
5b5cc601e4d2b4197774b467- 1long, double chains of nucleic acids.true
- 2long, single chains of amino acids.false
- 3long, single chains of nucleic acids.false
- 4long, double chains of amino acids.false
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Answer : 1. "long, double chains of nucleic acids."
Explanation :
Answer: A) long, double chains of nucleic acids. Explanation: Gene is a segment of chromosomal DNA or a sequence of DNA or RNA that codes for a molecule that has a function. It is the basic physical and functional unit of heredity. As genes are made up of DNA it impies that they are long, double chains of nucleic acids as DNA is made of nucleic acids.
Q: The intersection of a column and a row 2411 05b5cc651e4d2b4197774bcdb
5b5cc651e4d2b4197774bcdb- 1Celltrue
- 2Menufalse
- 3Keyfalse
- 4Fieldfalse
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Answer : 1. "Cell"
Explanation :
Answer: A) Cell Explanation: The intersection of a column and a row in a spread sheet is called as a cell or a bon.
Q: The simple interest on Rs. 25 for 4 months at the rate of 3 paise per rupee per month is : 2407 05b5cc6dde4d2b4197774ea23
5b5cc6dde4d2b4197774ea23- 1240 paisefalse
- 2Rs. 1.40false
- 3Rs. 2.20false
- 4Rs. 3true
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Answer : 4. "Rs. 3"
Explanation :
Answer: D) Rs. 3 Explanation: I = PTR/100I = 25 x 4 x 0.03/100I = 0.03 x 100 = 300 Ps = Rs. 3
Q: How long have i been alive? 2404 05b5cc6a5e4d2b4197774ccaf
5b5cc6a5e4d2b4197774ccaf- Show AnswerHide Answer
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Answer :
Explanation :
This is a different way of asking your age. It can be how long you have been living in days weeks months and years since your birth date.
Q: At a certain rate of interest the compound interest of 3 years and simple interest of 5 years for certain sum of money is respectively Rs. 1513.2 and Rs. 2400. Find the common rate of interest per annum ? 2402 05b5cc6cde4d2b4197774e1cc
5b5cc6cde4d2b4197774e1cc- 15%true
- 26%false
- 34%false
- 43%false
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Answer : 1. "5%"
Explanation :
Answer: A) 5% Explanation: Given compound interest for 3 years = Rs. 1513.2 and simple interest for 5 years = Rs. 2400 Now, we know that C.I = P1+R100n - 1 => 1513.2 = P1+R1003 - 1 ...........(A) And S.I = PTR/100 => 2400 = P5R/100 ..................(B) By solving (A) & (B), we get R = 5%.