Exams


Q:

A passenger train covers the distance between station K and L, 40 minutes faster than a goods train. Find this distance between K and L if the average speed of the passenger train is 50 km/h and that of goods train is 30 km/h?

A) 50 kms B) 48 kms
C) 46 kms D) 44 kms
 
Answer & Explanation Answer: A) 50 kms

Explanation:

Let the distance be 'd' kms.

According to the given data,

d30 - d50 = 4060 hrs=> 6d = 300=> d = 50 kms.

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Filed Under: Problems on Trains
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Q:

A and B can do a piece of work for Rs 1540. Find the difference between the wages of C and B for the same work If A can do the work in 12 days and B can do the same work in 8 days and with the help of C, A and B can do the same work in 2 days?

A) 980 B) 1232
C) 810 D) 1121
 
Answer & Explanation Answer: B) 1232

Explanation:

From the given data,


                       Day      Capacity

A              ->    12          2

B              ->     8           3             2

A + B + C ->     2            12

=> Capacity of C = 12 - 5 = 7

Ratio of capacity of A : B : C = 2 : 3 : 7

Difference of wages of C & B = 4/5 x 1540

= 4 x 308 = Rs. 1232

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Filed Under: Time and Work
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13 6561
Q:

Mastic : Gum : : Suet : ?

A) Fur B) Hide
C) Fat D) Milk
 
Answer & Explanation Answer: C) Fat

Explanation:

Mastic is a gum obtained from plants and suet is a fat obtained from animals.

 

Hence, Mastic : Gum :: Suet : Fat.

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Filed Under: Analogy
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3 6559
Q:

Water soluble vitamin include

A) vitamin C B) niacin
C) riboflavin D) all of the above
 
Answer & Explanation Answer: D) all of the above

Explanation:
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Filed Under: General Science
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31 6558
Q:

Find the area of the rectangle or square with the given dimensions L = 5 inches, W= 3 inches?

A) 13 B) 14
C) 15 D) 16
 
Answer & Explanation Answer: C) 15

Explanation:

We know that,

Area of rectangle A = L x W = 5 x 3 = 15 sq.inches.

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Filed Under: Area
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2 6553
Q:

Largest Mint in India is at

A) Mumbai B) Hyderabad
C) Noida D) Kolkata
 
Answer & Explanation Answer: D) Kolkata

Explanation:

The Largest Mint in India is Kolkata Mint.

 

Government of India operates 4 Mints in the country for the production of Coins. They are at

      • Hyderabad, Telangana
      • Mumbai, Maharashtra
      • Kolkata, West Bengal
      • Noida, Uttar Pradesh. 
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Filed Under: Famous Places
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17 6552
Q:

When was the first central legislative assembly constituted?

A) 1909 B) 1917
C) 1920 D) 1925
 
Answer & Explanation Answer: C) 1920

Explanation:

The first central legislative assembly constituted in the year 1920.

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Filed Under: Indian Politics
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Q:

The top and bottom of a tower were seen to be at angles of depression 30° and 60° from the top of a hill of height 100 m. Find the height of the tower ?

A) 42.2 mts B) 33.45 mts
C) 66.6 mts D) 58.78 mts
 
Answer & Explanation Answer: C) 66.6 mts

Explanation:

ht1488353450.jpg image

From above diagram
AC represents the hill and DE represents the tower

Given that AC = 100 m

angleXAD = angleADB = 30° (∵ AX || BD )
angleXAE = angleAEC = 60° (∵ AX || CE)

Let DE = h

Then, BC = DE = h, AB = (100-h) (∵ AC=100 and BC = h), BD = CE

tan 60°=AC/CE => √3 = 100/CE =>CE = 100/√3 ----- (1)

tan 30° = AB/BD => 1/√3 = 100−h/BD => BD = 100−h(√3)
∵ BD = CE and Substitute the value of CE from equation 1
100/√3 = 100−h(√3) => h = 66.66 mts

The height of the tower = 66.66 mts.

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Filed Under: Height and Distance
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17 6547