Bank PO Questions and Answers with Explanation, Job Roles

Q:

Which best describes a tetrad?

A) A diploid cell	B) Two gametes
C) Four chromatids	D) A haploid cell

Answer & Explanation Answer: C) Four chromatids

Explanation:

A tetrad is best described by Four chromatids. It is formed from two homologous chromosomes, each consisting of two chromatids in the first stage of meiosis called prophase1.

A_tetrad_is_made_up_of1562827273.jpg image

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Filed Under: Biology
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Q:

K can finish the work in 18 days and L can do the same work in 15 days. L worked for 10 days and left the job. In how many days, K alone can finish the remaining work ?

A) 5.5 days	B) 6 days
C) 4.2 days	D) 5 days

Answer & Explanation Answer: B) 6 days

Explanation:

L's 10 days work = $(\frac{1}{15} \times 10) = \frac{2}{3}$

Remaining work = $(1 - \frac{2}{3}) = \frac{1}{3}$

Now, work is done by K in one day = 1/18

1/3 work is done by K in $(18 \times \frac{1}{3})$ = 6 days

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Filed Under: Time and Work
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Q:

Which of the following memory is volatile?

A) RAM	B) Floppy disc
C) ROM	D) Magnetic tape

Answer & Explanation Answer: A) RAM

Explanation:

Volatile memory is computer memory that requires power to maintain the stored information. It is a temporary memeory which cannot contain information permanently.

Example :: RAM or Random Access Memory

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Filed Under: Computer
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Q:

The series of differences between consecutive prime numbers is represented as Cp1, Cp2, Cp3, .... Cpn , Whare Cp1 is the difference between the second and the first prime number. Find the sum of series when n = 23, given that the 23rd prime number is 83 ?

A) 87	B) 81
C) 83	D) 85

Answer & Explanation Answer: A) 87

Explanation:

Cp1 = p2 - p1 ,
Cp2 = p3 - p2
..
..
..
Cp23 = p24 - p23
Sum of series = (p2-p1) + (p3-p2) + .....(p23-p22) + (p24-p23)
All terms get cancelled, except p1 = 2 and p24 = 89
So Sum = -p1 + p24
Sum of series = -2 + 89 = 87

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Filed Under: Problems on Numbers
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Q:

Which helps prevent errors in DNA replication?

A) Complementary base pairing reduce errors	B) DNA ligase checks the DNA for errors
C) DNA is located in the ribosomes	D) Any base can pair with any other base

Answer & Explanation Answer: A) Complementary base pairing reduce errors

Explanation:

DNA replication is the biological process of producing two identical replicas of DNA from one original DNA molecule. DNA replication occurs in all living organisms acting as the basis for biological inheritance. Complementary base pairing helps prevent errors in DNA replication.

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Filed Under: Biology
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Q:

The main goal for farmers in 1900 was to

A) Force the railroads to lower freight rates	B) Enable them to pay back their loans more easily
C) Hold on to political and economic power.	D) voters greater direct participation in government

Answer & Explanation Answer: C) Hold on to political and economic power.

Explanation:

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Filed Under: Indian History
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Q:

Fill in the blank with an appropriate word from the following options.

Usually the room tariff in this hotel is higher. At present, it is low because of the------- season.

A) Peak	B) Off
C) Down	D) Slow

Answer & Explanation Answer: B) Off

Explanation:

Season can be either at peak or off.
Presently it is low, that is because of OFF season.

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Filed Under: Analogy
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Q:

Group the given figures into three classes using each figure only once.

9_(1)1484718122.png image

A) 1,5,9 ; 2,7,8 ; 3,4,6	B) 2,4,9 ; 6,7,8 ; 1,3,5
C) 3,7,8 ; 4,5,9 ; 1,2,6	D) 1,5,6 ; 4,7,8 ; 2,3,9

Answer & Explanation Answer: B) 2,4,9 ; 6,7,8 ; 1,3,5

Explanation:

2, 4, 9 have two similar elements intersecting each other.
6, 7, 8 have two different elements one placed inside the other.
1, 3, 5 have two different elements intersecting each other.

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Filed Under: Grouping of Images
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