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Q:

The metal which reacts most violently with with cold water is

A) calcium B) sodium
C) magnesium D) potassium
 
Answer & Explanation Answer: D) potassium

Explanation:

Potassium reacts violently with water liberating hydrogen. The reaction is so violent that the liberated hydrogen catches fire.

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Filed Under: Chemistry

47 11740
Q:

Minute hand overlaps hour hand in 65 mins. In how many days it will gain 1440 hours ?

A) 57 days B) 58 days
C) 60 days D) 61 days
 
Answer & Explanation Answer: C) 60 days

Explanation:

In this problem , it has considered that 65 mins = 1hr
So mins has increased by 5 mins so multiply 5 x 24 = 120 mins extra ,
That is now per day it adds 2hr extra, so divide 1440/26 = 59.384 days =~ 60 days.

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Filed Under: Clock puzzles
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Bank Clerk , Bank PO

38 11711
Q:

 What is the name of the virus that fool a user into downloading and executing them by pretending to be useful applications  ?

A) Trojan horses B) Keylogger
C) Worm D) File virus
 
Answer & Explanation Answer: A) Trojan horses

Explanation:
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Filed Under: Computer
Exam Prep: Bank Exams , CAT
Job Role: Analyst , IT Trainer

32 11707
Q:

Delayed payload of some viruses is also called as _____

A) Bomb B) Late - Virus
C) Time D) Anti-virus
 
Answer & Explanation Answer: A) Bomb

Explanation:
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Filed Under: Computer
Exam Prep: Bank Exams , CAT
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22 11689
Q:

What is Black, when Clean and White, when Dirty?

A) Shoes B) Car
C) Chalkboard D) None
 
Answer & Explanation Answer: C) Chalkboard

Explanation:

It is Blackboard or Chalkboard which is Black when clean, and as you write on it with white chalk it becomes dirty in White color.

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Filed Under: Word Puzzles
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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12 11679
Q:

Cinematography was invented by

A) Graham Bell B) Edison
C) Zeiss D) Faraday
 
Answer & Explanation Answer: B) Edison

Explanation:
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Filed Under: Inventions

20 11671
Q:

The Plan-Do-Check-Act cycle can be used to plan and implement Service Management Processes:
How many times should each stage of the cycle be visited?

A) There should be a single Plan and Do, and then Check and Act should be carried out multiple times to Implement Continual Improvement B) There should be a single %n. then the Do-Check-Act cycle should be repeated multiple times to Implement Continual improvement
C) The entire cycle should be repeated multiple times to Implement Continual Improvement D) Each stage should be carried out once in the order Plan-Do-Check-Act
 
Answer & Explanation Answer: D) Each stage should be carried out once in the order Plan-Do-Check-Act

Explanation:
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Filed Under: ITIL Certification

1 11668
Q:

Who invented Radar?

A) Henrey Backquerel B) Max Planck
C) Robert Watson Watt D) Humphrey Davy
 
Answer & Explanation Answer: C) Robert Watson Watt

Explanation:

Who_invented_Radar1556273104.jpg image

RADAR stands for Radio Detection and Ranging.

Radar is a detecting system that uses radio waves to determine the range, angle, or velocity of objects. It operates in the ultra-high-frequency of the radio-frequency (RF) spectrum.

 

Uses ::

To detect

aircraft,

ships,

spacecraft,

guided missiles,

motor vehicles,

weather formations, and

terrain.

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Filed Under: Inventions
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Job Role: Bank PO , Bank Clerk , Analyst

18 11667