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Q:

Which of the following is a scalar quantity

A) electric current B) electric field
C) Acceleration D) linear momentum
 
Answer & Explanation Answer: A) electric current

Explanation:

A Scalar quantity is a quantity that has only magnitude but no direction as like vector. 

Here in the given options, electric current is the only one which is scalar.

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Filed Under: Physics
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21 10671
Q:

A heap of coconuts is divided into groups of 2, 3 and 5 and each time one coconut is left over. The least number of Coconuts in the heap is  ?

A) 63 B) 31
C) 16 D) 27
 
Answer & Explanation Answer: B) 31

Explanation:

To get the least number of coconuts :
LCM = 30 => 30 + 1 = 31

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Filed Under: HCF and LCM
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33 10667
Q:

The given graph shows the distribution of minerals in the human body?

 

 

Based on the given data, what is the ratio of the metal with the second highest percentage of distribution to that with the second lowest percentage of distribution in the human body?

 

A) 1 : 2 B) 2 : 1
C) 3 : 1 D) 4 : 1
 
Answer & Explanation Answer: B) 2 : 1

Explanation:
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Filed Under: Pie Charts
Exam Prep: Bank Exams

0 10655
Q:

The average number of visitors of a library in the first 4 days of a week was 58. The average for the 2nd, 3rd, 4th and 5th days was 60.If the number of visitors on the 1st and 5th days were in the ratio 8 : 9. Then what is the number of visitors on the 5th day of the library ?

A) 54 B) 64
C) 68 D) 72
 
Answer & Explanation Answer: D) 72

Explanation:

If number of visitors on 1st, 2nd, 3rd, 4th & 5th day are k, l, m, n & o respectively, then
k + l + m + n = 58 x 4 = 232 ---- (i) &
l + m + n + o = 60 x 4 = 240 ---- (ii)
Subtracting (i) from (ii), we get
o-k = 8 ---(iii)
Given, k/o = 8/9 ----(iv)
So from (iii) & (iv), we get
a = 64, e = 72
Therefore, number of visitors on 5th day is 72.

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Filed Under: Simplification
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8 10637
Q:

Atmospheric pressure exerted on earth is due to

A) gravitational pull B) rotation of earth
C) revolution of earth D) uneven heating of earth
 
Answer & Explanation Answer: A) gravitational pull

Explanation:

The atmospheric pressure at the surface of the Earth is due to gravitational pull of the earth and is about 14.7 psi.

 

That means that the weight of a column of air which has a cross section of 1 square inch and which stretches from the surface of the Earth to space is 14.7 pounds. 

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Filed Under: Physics
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7 10637
Q:

In the following Venn diagram which region represents the coach who is also a player but not a girl?

 

A) U B) T
C) R D) S
 
Answer & Explanation Answer: B) T

Explanation:
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Filed Under: Logical Venn Diagram
Exam Prep: Bank Exams

3 10636
Q:

Which one of the following does not contain Silver ?

A) Horn Silver B) Ruby Silver
C) Lunar Caustic D) German Silver
 
Answer & Explanation Answer: D) German Silver

Explanation:
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Filed Under: General Awareness
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30 10630
Q:

A is two years older than B who is twice as old as C. If the total of the ages of A, B and C be 27, then how old is B ?

A) 10 yrs B) 11 yrs
C) 12 yrs D) 13 yrs
 
Answer & Explanation Answer: A) 10 yrs

Explanation:

Let C's age be x years.
Then, B's age = 2x years.
A's age = (2x + 2) years.
(2x + 2) + 2x + x = 27
5x = 25 => x = 5
Hence, B's age = 2x = 10 years.

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Filed Under: Problems on Ages
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4 10628