Sawaal

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Q:

A potentiometer wire is 100 cm long and a constant potential difference is maintained across it. Two cells are connected in series first to support one another and then in opposite direction. The balance points are obtained at 50 cm and 10 cm from the positive end of the wire in the two cases. The ratio of the emf's is :

A) 3:4 B) 5:4
C) 5:1 D) 3:2
 
Answer & Explanation Answer: D) 3:2

Explanation:

In series : E1 + E2 = K(50)

In parallel : E1 - E2 = K(10)

E1 + E2 / E1 - E2 = 5/1

=> E1/E2 = 3/2

The emf's are in the ratio of 3:2.

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Filed Under: Physics
Exam Prep: AIEEE

40 11082
Q:

The Vikramshila Mahavihara, a great centre of education, was founded by

A) Baladitya B) Harsha
C) Gopala D) Dharmapala
 
Answer & Explanation Answer: D) Dharmapala

Explanation:
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Filed Under: Indian History

12 11077
Q:

The Sum of three consecutive numbers is 126.Find the highest number.

 

A) 41 B) 42
C) 43 D) 44
 
Answer & Explanation Answer: D) 44

Explanation:
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Filed Under: Inventions
Exam Prep: Bank Exams

61 11076
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 11076
Q:

The common name for the crime of stealing passwords is

A) Spoofing B) Surfing
C) Identity Theft D) Speeling
 
Answer & Explanation Answer: A) Spoofing

Explanation:

A spoofing attack is a situation in which one individual or program effectively disguises or mask as another by falsifying information and thereby gaining up an ill-conceived advantage. It may use for stealing password or IP addresses.

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Filed Under: Computer
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO , Database Administration , IT Trainer , Network Engineer , Project Manager

18 11056
Q:

Mechanical energy is the combination of kinetic energy and

 

A) Heat energy B) Chemical energy
C) Potential energy D) Nuclear energy
 
Answer & Explanation Answer: C) Potential energy

Explanation:
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Filed Under: Physics
Exam Prep: Bank Exams

1 11052
Q:

Why ABC computer is called so ?

A) Because it was thought to be the first computer so named with first alphabets of English B) Because it was developed by Atanasoff and Berry
C) Both of above are the reason to name the computer ABC D) None of the above
 
Answer & Explanation Answer: A) Because it was thought to be the first computer so named with first alphabets of English

Explanation:
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Filed Under: Computer
Exam Prep: Bank Exams , CAT
Job Role: Bank Clerk , Bank PO

11 11046
Q:

Simla is cooler than Amritsar although they are on the same latitude. This is because

A) Simla is further north B) Simla is at greater height above sea level than Amritsar
C) Simla is farther from the equator D) Their longitudes differ
 
Answer & Explanation Answer: B) Simla is at greater height above sea level than Amritsar

Explanation:
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Filed Under: World Geography

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