Q:

Which bond has the greatest ionic character?

A) H-F	B) H-Cl
C) H-N	D) H-O

Answer & Explanation Answer: A) H-F

Explanation:

Ionic character depends on the electronegativity difference between the bonding elements. The greatest the elctronegativity diffference the greatest the ionic character.

Here in the given options, H-F has has the greatest ionic character. The electronegativity of Hydrogen is 2.1 and that of Fluorine is 4. Now the electronegativity difference is 4 - 2.1 = 1.9.

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Q:

An electrically charged atom or group of atoms is called

A) An ion	B) A meson
C) A electron	D) None of the above

Answer & Explanation Answer: A) An ion

Explanation:

An electrically charged atom or group of atoms formed by the loss or gain of one or more electrons is called an Ion.

Cation:

An ion is a cation (positive ion) if it is created by electron loss and is attracted to the cathode in electrolysis.

Anion:

An ion is an anion (negative ion) if it is created by an electron gain and is attracted to the anode.

The valence of an ion is equal to the number of electrons lost or gained and is indicated by a plus sign for cations and a minus sign for anions.

Ex: Na +, Cl−, Ca ++,...

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11 8579

Q:

Michael Jackson was a distinguished personality in which of the following fields

A) Journalism	B) Acting
C) Pop Music	D) Sports

Answer & Explanation Answer: C) Pop Music

Explanation:

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Filed Under: Famous Personalities

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Q:

Puzzle : Bridge Crossing

Jim, Jeanne, Louis and Anne wants to cross the bridge at night. They have only one torch light with them. Only two can cross the bridge at a time. They need torch light to cross the bridge. Each of them walks at a different speed. Jim needs 1 minute, Jeanne needs 2 minutes, Louis needs 5 minutes and Anne needs 10 minutes. A pair must walk together at the rate of the slower person. How these people can cross the bridge within 17 minutes?

Answer

First Jim and Jeanne walks across the bridge, it takes 2 minutes.

Jim walks back with the torch light, which takes 1 minute.

Then Louis and Anne walk on the bridge, which takes 10 minutes.

Jeanne comes back with the torch light, it takes 2 minutes.

Finally Jim and Jeanne walks across the bridge, which takes 2 minutes.

Total = 2 + 1 + 10 + 2 + 2 = 17 minutes

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Subject: Math Puzzles

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Q:

The load and index is which of the following?

A) A process to reject data from the data warehouse and to create the necessary indexes	B) A process to load the data in the data warehouse and to create the necessary indexes
C) A process to upgrade the quality of data after it is moved into a data warehouse	D) A process to upgrade the quality of data before it is moved into a data warehouse

Answer & Explanation Answer: B) A process to load the data in the data warehouse and to create the necessary indexes

Explanation:

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Filed Under: Database

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Q:

Who was the first posthumous recipient of Bharat Ratna ?

A) B.R. Ambedkar	B) Lal Bahadur Shastri
C) K. Kamraj	D) M.G. Ramachandran

Answer & Explanation Answer: B) Lal Bahadur Shastri

Explanation:

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Q:

Two bodies A and B are of same mass and same amount of heat is given to both of them. If the temperature of A increases more than that of B because of heat addition, then

A) the specific heat capacity of A is more than that of B	B) the specific heat capacity of A is less than that of B
C) both A and B have the same specific heat capacity but A has greater thermal conductivity	D) both A and B the same specific heat capacity but B has greater thermal conductivity

Answer & Explanation Answer: B) the specific heat capacity of A is less than that of B

Explanation:

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Filed Under: Physics

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Q:

A user reports a PC problem to the Service Desk. A Service Desk representative determines that the PC is defective and indicates that according to the services catalogue, the PC will be replaced within three hours. Which ITIL process is responsible for having this user's PC replaced within three hours?

A) Availability Management	B) Change Management
C) Configuration Management	D) Service Level Management

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