GATE Practice Question and Answer
8Q: The ratio between present ages of Renuka and Sony is 5 : 4 . 4 years ago, Sony's age was 24 years. What will be Renuka's age after 5 years ? 1424 05b5cc6b5e4d2b4197774d539
5b5cc6b5e4d2b4197774d539- 125false
- 230false
- 335false
- 440true
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 4. "40"
Explanation :
Answer: D) 40 Explanation: Present age of Sony = 24 + 4 = 28 years After 5 years Renuka's age = 7×5 + 5 = 40 years
Q: If rupee two produces rupees eleven over a period of 30 years, find the rate of simple interest ? 1422 05b5cc6e2e4d2b4197774ec7f
5b5cc6e2e4d2b4197774ec7f- 117.25 %false
- 218.14 %false
- 318.33 %true
- 417.35 %false
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 3. "18.33 %"
Explanation :
Answer: C) 18.33 % Explanation: We know that I = PTR/100 11 = (2x30xR)/100 R = 18.333 %
Q: what is the source of energy for the water cycle? 1421 05b5cc611e4d2b4197774b640
5b5cc611e4d2b4197774b640- 1Rain waterfalse
- 2Suntrue
- 3Cloudsfalse
- 4Animalsfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 2. "Sun"
Explanation :
Answer: B) Sun Explanation: The water cycle is a term for the movement of water between the Earth's surface, the sky and underground. Water evaporates due to heat from the sun. Hence, the water cycle is driven primarily by the energy from the sun. This solar energy drives the cycle by evaporating water from the oceans, lakes, rivers, and even the soil. Other water moves from plants to the atmosphere through the process of transpiration.
Q: Which color has the highest frequency? 1421 05b5cc6a7e4d2b4197774ce52
5b5cc6a7e4d2b4197774ce52- 1Violettrue
- 2Redfalse
- 3Indigofalse
- 4Greenfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "Violet"
Explanation :
Answer: A) Violet Explanation: In VIBGYOR. It has colors ordered from highest to lowest frequency. Violet > Indigo > Blue > Green > Yellow > Orange > Red That says Violet has the highest frequency. We know, Speed of light = Frequency x Wavelength => As frequeny is inversely proportional to wavelength i.e, as frequwncy goes high wavelength goes down. So, the violet color has the highest frequency.
Q: Which phase change is an example of an exothermic process? 1421 05b5cc690e4d2b4197774c44a
5b5cc690e4d2b4197774c44a- 1Liquid to Solidfalse
- 2Gas to Solidfalse
- 3Gas to Liquidfalse
- 4All the abovetrue
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 4. "All the above"
Explanation :
Answer: D) All the above Explanation: Processes that require or give off heat will be limited to changes of state, known as phase changes, and changes in chemical constitution, or chemical reactions. Changes of state involve a solid melting, a liquid freezing, a liquid boiling or a gas condensing. An exothermic process is one that gives off heat, which is transferred to the surroundings. An endothermic process is a reaction which heat has to be supplied to the system from the surroundings. Here in all the given options, heat is taken away from them to change there phase. Liquid to Solid --- Freezing Gas to Liquid --- Condensation Gas to Solid --- Deposition are all examples of exothermic processes.
Q: A train running at the speed of 40 km/hr crosses a signal pole in 9 seconds. Find the length of the train ? 1421 05b5cc76fe4d2b4197774ff4e
5b5cc76fe4d2b4197774ff4e- 190 mtsfalse
- 2150 mtsfalse
- 3120 mtsfalse
- 4100 mtstrue
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 4. "100 mts"
Explanation :
Answer: D) 100 mts Explanation: We know that Speed=distancetime distance= speed * time ⇒ d=40×518×9 d= 100 mts.
Q: 'Brothers and sisters, I have none. But that man's father is my father's son'.How I and that man are related respectively? 1420 05b5cc6a3e4d2b4197774cc10
5b5cc6a3e4d2b4197774cc10- 1Father & Sontrue
- 2Brothersfalse
- 3Son & Fatherfalse
- 4Nephewsfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "Father & Son"
Explanation :
Answer: A) Father & Son Explanation: Given that man's father is my father's son => Me because i have no brothers => Mans father is me. Hence, that man is my Son.
Q: LCD of 12 and 18 1420 05b5cc6b8e4d2b4197774d66b
5b5cc6b8e4d2b4197774d66b- 136true
- 242false
- 312false
- 46false
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "36"
Explanation :
Answer: A) 36 Explanation: LCD is nothing but Lowest or Least Common Denominator Here LCD of 12 and 18 means LCD of two fractions with denominators 12 and 18 respectively. Therefore, LCM of 12 & 18 = 6 x 3 x 2 = 36 How to calculate LCD :: The lowest common denominator or least common denominator (LCD) is the least common multiple (LCM) of the denominators of a set of fractions.

