Practice Question and Answer
8Q: A motorboat can go 10 miles downstream on a river in 20 min. It takes 30 min for this boat to go back at the same 10 miles. Find the speed of the current ? 2243 05b5cc6bfe4d2b4197774da29
5b5cc6bfe4d2b4197774da29- 18 m/hfalse
- 25 m/htrue
- 37 m/hfalse
- 46 m/hfalse
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Answer : 2. "5 m/h"
Explanation :
Answer: B) 5 m/h Explanation: As the distance travelled is constant, the time taken is inversely proportional to speed. Let 'u' be the speed of the current and 'v' be the speed of the boat. Speed of the boat downstream = v + u & upstream = v - u => v+u/v-u = 30/20 => v/u = 5 => v = 5u => v + u = 6u = 10/20/60 miles/hr => 6u = 30 m/h => u = 5 m/h
Q: A alone would take 6 hours more to complete the job than if both A and B would work together. When B worked alone he took 1.5 hours more to complete the job and A and B worked together. How much time they will take if they if they work together?
2243 05fd9c0a389d4575ab49095cc
5fd9c0a389d4575ab49095cc- 13 hourstrue
- 24 hoursfalse
- 34.5 hoursfalse
- 45 hoursfalse
- 5None of thesefalse
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Answer : 1. "3 hours"
Q: Which letter will come in place of the question mark (?) in the following series?
FLO, H?Q, JPS, LRU
2243 05f195038209bcc11a7859120
5f195038209bcc11a7859120FLO, H?Q, JPS, LRU
- 1Pfalse
- 2Mfalse
- 3Ntrue
- 4Ifalse
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Answer : 3. "N"
Q: Which region has the least contribution to India's national income?
2243 05efbfe670a52267797b6b43a
5efbfe670a52267797b6b43a- 1Primary Sectorfalse
- 2Secondary Sectortrue
- 3Tertiary sectorfalse
- 4None of thesefalse
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Answer : 2. "Secondary Sector"
Q: In agroup of six women, there are four dancers, four vocal musicians, one actress and three violinists. Girija and Vanaja are among the violinists while Jalaja and Shailaja do not know how to ply on the violin. Shailaja and Tanuja are among the dancers. Jalaja, Vanaja, Shailaja and Tanuja are all vocal musicians and two of them are also violinists. If Pooja is an actress, who among the following is both a dancer and a violinist ? 2243 05b5cc758e4d2b4197774fbfe
5b5cc758e4d2b4197774fbfe- 1Shailajafalse
- 2Vanajafalse
- 3Girijafalse
- 4Tanujatrue
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Answer : 4. "Tanuja"
Explanation :
Answer: D) Tanuja Explanation: The four vocal musicians and one actress in the group are given. Two dancers are Shailaja and Tanuja. Two violinists are Girija and Vanaja. Since Jalaja and Shailaja cannot be violinists, so remaining two violinists are Tanuja and Pooja. Clearly, Tanuja is both a violinist and a dancer.
Q: In which country has the 13th edition of the Indian Premier League (IPL) started?
2242 05f686bf3397b1a529085be90
5f686bf3397b1a529085be90- 1Americafalse
- 2Francefalse
- 3UAEtrue
- 4Japanfalse
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Answer : 3. "UAE"
Q: Which of the following metals is in a liquid state at orbital temperature?
2242 05db92494e7ff3d08a1c5f8d7
5db92494e7ff3d08a1c5f8d7- 1Mercurytrue
- 2Tungstenfalse
- 3Leadfalse
- 4Brominefalse
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Answer : 1. "Mercury"
Q: Length of train is 170 meters and speed of train is 63 km/hour. This train can pass a bridge in 30 seconds, then find the length of the bridge. 2241 05b5cc76fe4d2b4197774ff49
5b5cc76fe4d2b4197774ff49- 1355 mtstrue
- 2325 mtsfalse
- 3365 mtsfalse
- 4312 mtsfalse
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Answer : 1. "355 mts"
Explanation :
Answer: A) 355 mts Explanation: Given speed = 63 km/hr = 63×518=352 m/s Let the length of the bridge = x mts Given time taken to cover the distance of (170 + x)mts is 30 sec. We know speed = distancetimem/s ⇒352=170+x30 --> x = 355 mts.