GATE Practice Question and Answer
8Q: Lux is the SI unit of 2326 05b5cc69fe4d2b4197774ca0a
5b5cc69fe4d2b4197774ca0a- 1luminous fluxfalse
- 2luminous efficiencyfalse
- 3intensity of illuminationtrue
- 4luminous intensityfalse
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Answer : 3. "intensity of illumination"
Explanation :
Answer: C) intensity of illumination Explanation: The lux (lx) is the SI derived unit of illuminance and luminous emittance, measuring luminous flux per unit area. It is equal to one lumen per square meter.
Q: The average of a non-zero number and its square is 11 times the number. The number is ? 2320 05b5cc72ce4d2b4197774f741
5b5cc72ce4d2b4197774f741- 122true
- 221false
- 311false
- 417false
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Answer : 1. "22"
Explanation :
Answer: A) 22 Explanation: Let the number be 'x'. x+x22 = 11x x2= 22x => x = 22.
Q: Arun is a cashew merchant in Telangana. He has cashews in sealed wooden boxes of 10kg each. The price of the cashew increases by Rs.20 per kg for every year, but at the same time, 10% of the cashews are eaten by rodents every year. If the price of a 1 kg of fresh cashew is Rs.120, what is the change in his profits if he sells a sealed box after one year of storage, rather than selling it fresh ? (In Rs.) 2319 05b5cc728e4d2b4197774f719
5b5cc728e4d2b4197774f719- 1Rs. 60true
- 2Rs. 54false
- 3Rs. 80false
- 4Rs. 75false
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Answer : 1. "Rs. 60"
Explanation :
Answer: A) Rs. 60 Explanation: Price of 1kg fresh cashew = Rs.120Therefore, price of 10kg = Rs.120 x 10 = Rs.1200 10% of 10kg which eaten by rodents = 10 x 10/100 = 1kg. So, End of Year he had 10kg - 1kg = 9kg So, he sells that 9kg with Rs.20 per kg profit = 9 x 140 = 1260. He buy 10kg wooden box with cashew for Rs.1200 and sell that for Rs. 1260 So, profit = 1260 - 1200 = Rs.60 more money he get.
Q: Milk is an example of a 2317 05b5cc651e4d2b4197774bd23
5b5cc651e4d2b4197774bd23- 1Emulsiontrue
- 2Solutionfalse
- 3Gelfalse
- 4Suspensionfalse
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Answer : 1. "Emulsion"
Explanation :
Answer: A) Emulsion Explanation: Milk is an emulsion of oil in water (o/w). Emulsion: A suspension of droplets of one liquid in another. Constituents of milk : The principal constituents of milk are water, fat, proteins, lactose (milk sugar) and minerals (salts). Milk also contains trace amounts of other substances such as pigments, enzymes, vitamins, phospholipids (substances with fatlike properties), and gases.
Q: If x = √8 - √7, y = √6 - √5 and z = √10 - 3, which of the following is true ? 2312 05b5cc6dbe4d2b4197774e955
5b5cc6dbe4d2b4197774e955- 1x > y < zfalse
- 2x < y < zfalse
- 3x > y > zfalse
- 4z < x < ytrue
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Answer : 4. "z < x < y"
Explanation :
Answer: D) z < x < y Explanation: x = √8 - √7 = 1/(√8 + √7) and y = √6 - √5 = 1/(√6 + √5) and z = √10 - 3 = 1/(√10 + 3) As (√8 + √7) > (√6 + √5), (√8 - √7) < (√6 - √5) As (√10 + 3) > (√8 + √7) > (√6 + √5) z < x < y.
Q: A man walks 6 km at a speed of 112kmph, runs 8 km at a speed of 2 kmph and goes by bus another 32 km. Speed of the bus is 8 kmph. Find the average speed of the man in kmph. 2310 05b5cc764e4d2b4197774fd8a
5b5cc764e4d2b4197774fd8a- 14314false
- 24213true
- 32413false
- 43414false
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Answer : 2. "4213"
Explanation :
Answer: B) Option B Explanation: Man walked 6 km at 1.5 kmph, again he walked 8 km at speed of 2 kmph and 40 km at a speed of 8kmphtime taken indivisually: => 6/1.5 = 4 m=> 8/2 = 4 m=> 40/8 = 5 m Average speed of man= total distance/ total time=> 54/13 = 4213 kmph
Q: What gets wetter and wetter the more it dries? 2309 05b5cc6a8e4d2b4197774cec0
5b5cc6a8e4d2b4197774cec0- 1Soapfalse
- 2Toweltrue
- 3Clothesfalse
- 4Spongefalse
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Answer : 2. "Towel"
Explanation :
Answer: B) Towel Explanation: Towel gets wetter and wetter the more it dries because we use that towel which is dried after used.
Q: The average age of the district level hockey team of eleven is 22 years.The average age gets increased by 1 year when the coach age is also included.what is the age of the coach ? 2308 05b5cc705e4d2b4197774f24e
5b5cc705e4d2b4197774f24e- 133 yrsfalse
- 234 yrstrue
- 335 yrsfalse
- 436 yrsfalse
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Answer : 2. "34 yrs"
Explanation :
Answer: B) 34 yrs Explanation: Total age of players in team = 22 x 11 = 242When coach is included, total members = 12, Avg age increases by one becomes 23Total age when coach is included = 23x12 = 276Age of coach = 276-242 = 34 yrs.

