GATE Practice Question and Answer
8Q: Whale : Mammal :: Rat : ? 2206 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: What is the gram formula mass of K2CO3? 2206 05b5cc632e4d2b4197774b9b8
5b5cc632e4d2b4197774b9b8- 1147false
- 2138true
- 3129false
- 4116false
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Answer : 2. "138"
Explanation :
Answer: B) 138 Explanation: The gram formula mass of a compound is nothing but the molar mass. The molar mass of K2CO3 (Potassium Carbonate) is given by Atomic weights of individual elements are K (Potassium) = 39 g C (Carbon) = 12 g O (Oxygen) = 16 g Hence, that of K2CO3 = 39(2) + 12 + 16(3) = 78 + 12 + 48 = 138.
Q: A quantity of tea is sold at Rs. 5.75 per kilogram. The total gain by selling the tea at this rate is Rs. 60. Find the quantity of tea being sold if a profit of 15% is made on the deal ? 2205 05b5cc70ee4d2b4197774f332
5b5cc70ee4d2b4197774f332- 172 kgsfalse
- 280 kgstrue
- 376 kgsfalse
- 484 kgsfalse
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Answer : 2. "80 kgs"
Explanation :
Answer: B) 80 kgs Explanation: Say total cost price of tea is x.Then total profit at a rate of 15% is = (15x/100)According to question,15x/100 = 60so x = 400C.p of the tea is Rs. 400.so total selling price will be = (400+60) = Rs.460so the quantity of the tea will be = (460/5.75) = 80kg.
Q: Which planet has maximum satellite? 2205 05b5cc6a1e4d2b4197774caef
5b5cc6a1e4d2b4197774caef- 1Saturnfalse
- 2Earthfalse
- 3Jupitertrue
- 4Marsfalse
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Answer : 3. "Jupiter"
Explanation :
Answer: C) Jupiter Explanation: Jupiter has 67 natural satellites. Eight of Jupiter's moons are regular satellites, with 4 large, spherical moons, and 4 smaller moons that orbit closer to Jupiter. Jupiter has an additional 55 tiny irregular satellites. The planet with the second highest number of moons is Saturn, with 61 moons. Earth has only one natural satellite i.e, Moon. Mercury and Venus have no satellites.
Q: I shrink smaller every time I take a bath. What am I ? 2204 05b5cc662e4d2b4197774be96
5b5cc662e4d2b4197774be96- Show AnswerHide Answer
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Answer :
Explanation :
A Soap. Yes, it gets shrinks smaller every time we take a bath.
Q: How many squares with sides 1/2 inch long are needed to cover a rectangle that is 4 ft long and 4 ft wide ? 2204 05b5cc74fe4d2b4197774fb49
5b5cc74fe4d2b4197774fb49- 19216true
- 210246false
- 312345false
- 47527false
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Answer : 1. "9216"
Explanation :
Answer: A) 9216 Explanation: It takes four of those little squares -- each one 1/2 inch on a side -- to cover one square inch. That's because each one is 1/2 x 1/2, or 1/4 of a square inch. In a rectangle that is 48 inches by 48 inches, there are 2304 square inches.(1 ft = 12 inches) Since it takes 4 little squares to cover 1 sq inch, then it would need 2304 x 4 squares (1/2 inch on a side each) to cover a rectangle 4 feet by 4 feet. That is 9,216 of those squares.
Q: How much does a gallon of water weigh? 2204 05b5cc6b4e4d2b4197774d4cf
5b5cc6b4e4d2b4197774d4cf- 12.741 kgsfalse
- 22.956 kgsfalse
- 33.418 kgsfalse
- 43.785 kgstrue
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Answer : 4. "3.785 kgs"
Explanation :
Answer: D) 3.785 kgs Explanation: 1 Gallon = 3.785 kgs Gallon is a unit of measurement of liquid. We know that 1 gallon = 3.785 liters But we know that, 1 cubic meter = 1000 lit or 1000 kgs => 1 lit = 1 kg Hence, 1 gallon = 3.785 lit = 3.785 kgs.
Q: How many 3-digit numbers can be formed from the digits 2, 3, 5, 6, 7 and 9 which are divisible by 5 and none of the digits is repeated ? 2203 05b5cc774e4d2b4197775000c
5b5cc774e4d2b4197775000c- 115false
- 220true
- 35false
- 410false
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Answer : 2. "20"
Explanation :
Answer: B) 20 Explanation: Since each number to be divisible by 5, we must have 5 0r 0 at the units place. But in given digits we have only 5. So, there is one way of doing it. Tens place can be filled by any of the remaining 5 numbers.So, there are 5 ways of filling the tens place. The hundreds place can now be filled by any of the remaining 4 digits. So, there are 4 ways of filling it. Required number of numbers = (1 x 5 x 4) = 20.

