GATE Practice Question and Answer
8Q: In a daily morning walk three persons step off together. their steps measure 75 cm, 80 cm and 85 cm respectively. What is the minimum distance each should walk so that thay can cover the distance in complete steps ? 2174 05b5cc6c0e4d2b4197774dabc
5b5cc6c0e4d2b4197774dabc- 1222 m 44 cmfalse
- 2204 mtrue
- 3201 m 21 cmfalse
- 4208 mfalse
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Answer : 2. "204 m"
Explanation :
Answer: B) 204 m Explanation: To find the minimum distance, we have to get the LCM of 75, 80, 85 Now, LCM of 75, 80, 85 = 5 x 15 x 16 x 17 = 20400 Hence, the minimum distance each should walk so that thay can cover the distance in complete steps = 20400 cms = 20400/100 = 204 mts.
Q: Sources of geothermal power are 2174 05b5cc60de4d2b4197774b5e1
5b5cc60de4d2b4197774b5e1- 1waterfalse
- 2earth's heatfalse
- 3Both A & Btrue
- 4None of the abovefalse
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Answer : 3. "Both A & B"
Explanation :
Answer: C) Both A & B Explanation: Geothermal power plants are used in order to generate electricity by the use of geothermal energy (the Earth's internal thermal energy). They essentially work the same as a coal or nuclear power plant, the main difference being the heat source. Geothermal power plants use hydrothermal resources that have both water (hydro) and heat (thermal). Geothermal power plants require high-temperature (300°F to 700°F) hydrothermal resources that come from either dry steam wells or from hot water wells.
Q: What will come in place of the question mark (?) in the following number series ? 12, 24, 26.5, 79.5, ?, 330 2173 05b5cc6c1e4d2b4197774db5f
5b5cc6c1e4d2b4197774db5f- 1211false
- 2101.5false
- 382.5true
- 499false
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Answer : 3. "82.5"
Explanation :
Answer: C) 82.5 Explanation: The given series 12 24 26.5 79.5 ? 330 follows a pattern that, 12 x 2 = 24 24 + 2.5 = 26.5 26.5 x 3 = 79.5 79.5 + 3 = 82.5 82.5 x 4 = 330 Hence, the missing number is 82.5
Q: Find the odd one out of the following words ? 2173 05b5cc6d9e4d2b4197774e81b
5b5cc6d9e4d2b4197774e81b- 1cruisetrue
- 2crusadefalse
- 3expeditionfalse
- 4campaignfalse
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Answer : 1. "cruise"
Explanation :
Answer: A) cruise Explanation: Cruise = a sea voyage for pleasure. All other words are related to ‘journey on land, sea with an aim’.
Q: If the price of diesel increases by 25% and Karthik intends to spend only an additional 15% on diesel, by how much % will he reduce the quantity of diesel purchased ? 2173 05b5cc6d3e4d2b4197774e4a5
5b5cc6d3e4d2b4197774e4a5- 16.67 %false
- 28 %true
- 37.41 %false
- 49 %false
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Answer : 2. "8 %"
Explanation :
Answer: B) 8 % Explanation: Let the price of 1 litre of diesel be Rs.x and let Karthik initially buy 'y' litres of diesel. Therefore, he would have spent Rs. xy on diesel. When the price of diesel increases by 25%, the new price per litre of diesel is 1.25x. Karthik intends to increase the amount he spends on diesel by 15%.i.e., he is willing to spend xy + 15% of xy = 1.15xy Let the new quantity of diesel that he can get be 'q'.Then, 1.25x x q = 1.15xyOr q = (1.15/1.25)y = 0.92y. As the new quantity that he can buy is 0.92y, he gets 0.08y lesser than what he used to get earlier. Or a reduction of 8%.
Q: Which combination of atoms can form a polar covalent bond? 2173 05b5cc699e4d2b4197774c68c
5b5cc699e4d2b4197774c68c- 1H and Brtrue
- 2H and Hfalse
- 3Na and Brfalse
- 4N and Nfalse
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Answer : 1. "H and Br"
Explanation :
Answer: A) H and Br Explanation: Only H and Br form Polar Covalent Bond. Covalent bonding: Covalent bonding occurs when pairs of electrons are shared by atoms. Atoms will covalently bond with other atoms in order to gain more stability, which is gained by forming a full electron shell. By sharing their outer most (valence) electrons, atoms can fill up their outer electron shell and gain stability. 1. Polar Covalent Bond 2. Nonpolar Covalent Bond 1. Polar Covalent Bond: A Polar Covalent Bond is created when the shared electrons between atoms are not equally shared. This occurs when one atom has a higher electronegativity than the atom it is sharing with. The atom with the higher electronegativity will have a stronger pull for electrons (Similiar to a Tug-O-War game, whoever is stronger usually wins). As a result, the shared electrons will be closer to the atom with the higher electronegativity, making it unequally shared. 2. Nonpolar Covalent Bond: A Nonpolar Covalent Bond is created when atoms share their electrons equally. This usually occurs when two atoms have similar or the same electron affinity. The closer the values of their electron affinity, the stronger the attraction. This occurs in gas molecules; also known as diatomic elements. Nonpolar covalent bonds have a similar concept as polar covalent bonds; the atom with the higher electronegativity will draw away the electron from the weaker one. Here H and H and N and N form Non-polar covalent bonds. Na and Br form the ionic bond.
Q: India's longest cable-bridge inaugurated by PM Modi in which state ? 2172 05b5cc720e4d2b4197774f603
5b5cc720e4d2b4197774f603- 1Assamfalse
- 2Telanganafalse
- 3Gujarattrue
- 4Karnatakafalse
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Answer : 3. "Gujarat"
Explanation :
Answer: C) Gujarat Explanation: PM Modi Inaugurated India's Longest Cable Bridge in Gujarat, a four-lane bridge over the river Narmada in Bharuch. The bridge is 1344 metres long and 22.8 metres wide. It is built by Larsen and Turbo as a part of the Rs. 379 crore project of the National Highway Authority of India.
Q: What occurs once in a minute twice in a moment? 2172 05b5cc67ee4d2b4197774c244
5b5cc67ee4d2b4197774c244- Show AnswerHide Answer
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Answer :
Explanation :
Here the letter 'M' appears once in Minute and twice in a MoMent.

