Questions

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
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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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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

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Filed Under: Indian History

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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

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Q:

Charge on proton is equal to the charge on ______.

 

A) Electron B) Positron
C) Neutron D) Alpha particle
 
Answer & Explanation Answer: B) Positron

Explanation:
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Filed Under: Chemistry
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Q:

Select the antonym of

 

conception

 

A) clue B) cognition
C) fact D) notion
 
Answer & Explanation Answer: C) fact

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Filed Under: English
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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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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

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