Questions

Q:

What is formed when helium atom loses one electron?

 

A) Proton B) Positive helium ion
C) Negative helium ion D) Alpha particle
 
Answer & Explanation Answer: B) Positive helium ion

Explanation:
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Q:

Logical puzzle

There are three boxes in a table. One of the box contains Gold and the other two are empty. A printed message contains in each box. One of the message is true and the other two are lies. The first box says 'The Gold is not here'. The Second box says 'The Gold is not here'. The Third box says 'The Gold is in the Second box'. Which box has the Gold?

Answer

As the message contains one truth, the third says that the gold is in the second box, if it is to be true, then the first box message will also become true. So Gold cannot be in second and third boxes. Gold is in the first box.

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Q:

The process of transferring of charge from a charged object to the earth is called ______________.

 

A) neutralisation B) negation
C) terraforming D) earthing
 
Answer & Explanation Answer: D) earthing

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Q:

What is the capital of Ghana?

 

A) Banjul B) Bishkek
C) Accra D) Ankara  
 
Answer & Explanation Answer: C) Accra

Explanation:

The capital of Ghana is Accra and its currency is Ghanaian Cedi.

 

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Q:

An electron loses potential energy when it

 

A) shifts to a more electronegative atom. B) increases its kinetic energy.
C) shifts to a less electronegative atom. D) increases its activity as an oxidizing agent.
 
Answer & Explanation Answer: A) shifts to a more electronegative atom.

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Q:

What is the position of metallic ion and non-metallic ion in a chemical formula?

 

A) Metal ion at second position B) Non-metal ion at first position
C) Metal ion at first and non-metal ion at second position D) No option is correct
 
Answer & Explanation Answer: C) Metal ion at first and non-metal ion at second position

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Q:

Plaster of Paris ______.

 

I. changes into gypsum on mixing with water

II. is CaSO4.2H2O

III. is used for decoration

 

A) Only I and II   B) Only I and III  
C) Only II and III   D) All I, II and III  
 
Answer & Explanation Answer: B) Only I and III  

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Q:

The weight of an object will be minimum when it is placed at  ?

A) The North Pole B) The South Pole
C) The Equator D) The center of the Earth
 
Answer & Explanation Answer: D) The center of the Earth

Explanation:

The weight of an object is minimum when it is placed at the center of the earth because when an object is in the center, it experiences gravitational pull from all directions.

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