Questions

Q:

The bonds in the compound MgSO4 can be described as

A) covalent B) ionic
C) both A & B D) None of the above
 
Answer & Explanation Answer: C) both A & B

Explanation:

Here the given compound is MgSO4.

In the given compound, Sulphur (S) and Oxygen (O) are two non metals and Magnesium (Mg) is a metal.

In this compound, Sulphur and Oxygen reacts to form covalent bond and the metal Magnesium reacts with both non metals Sulphur and Oxygen to form ionic bonds.

 

Hence, in the given compound MgSO4 there are both covalent and ionic bonds.

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Filed Under: Chemistry
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Q:

A clock is started at 11 a.m. By 600 seconds past 6 p.m, the hour hand has turned through ?

A) 155 degrees B) 175 degrees
C) 205 degrees D) 215 degrees
 
Answer & Explanation Answer: D) 215 degrees

Explanation:

The total angle traced by the hour hand is the angle traced in 7 hours and 10 minutes.
We know that the angle traced by the hour hand in one hour is 30º and in one minute is 1/2º.
Therefore, (30º x 7) + (10 x 1/2º) = 215º is the angle traced by the hour hand.

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Q:

Which keystroke is used for updating a field?

A) F11 B) F12
C) F6 D) F9
 
Answer & Explanation Answer: D) F9

Explanation:

F9 keystroke is used for updating a field.

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Q:

Hindustan Lever is selling Lipton Ice Tea in the Indian Market in association with which company?

A) McDonald B) pepsiCo
C) Coca Cola D) Rasna
 
Answer & Explanation Answer: B) pepsiCo

Explanation:
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Q:

The power of a lens is measured in:

A) diopters B) aeon
C) lumen D) candela
 
Answer & Explanation Answer: A) diopters

Explanation:
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Filed Under: General Science

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Q:

Which part of a computer performs calculations?

A) Control unit B) Arithmetic and logical unit
C) Both A & B D) Logic bus
 
Answer & Explanation Answer: B) Arithmetic and logical unit

Explanation:

A computer has a CPU which is called as Central Processing UNit or a Processor builton the mother board. It has many components like control unit and Arithmetic and logical unit. 

 

The Arithmetic and logical unit of the CPU performs the arithmetic operations or mathematical calculations.

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Q:

In word, the mailing list is known as the

A) Data source B) Sheet
C) Source D) Data sheet
 
Answer & Explanation Answer: A) Data source

Explanation:

In word, the mailing list is known as the Data source.

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Q:

When an electric bulb breaks , there is an explosive sound. That is due to

A) the chemical reaction between the gases inside the bulb B) the compressed gases inside rushing out suddenly
C) the air outside rushing in to fill the vacuum inside the bulb D) None of these
 
Answer & Explanation Answer: C) the air outside rushing in to fill the vacuum inside the bulb

Explanation:

The inside of the bulb being a vacuum, the outside air rushes in when the bulb is broken. The vibrations of the rushing air molecules produce the sound.

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Filed Under: Physics

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