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 Chemistry Questions

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Q:

Which among the following is called quicksilver?

A) Titanium B) Mercury
C) Platinum D) Radium
 
Answer & Explanation Answer: B) Mercury

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Q:

Atomic number of which of the following elements is greater than that of Fluorine?

A) Sodium B) Beryllium
C) Nitrogen D) Boron
 
Answer & Explanation Answer: A) Sodium

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Q:

Which of these is not a macronutrient for Plants?

A) Nitrogen B) Phosphorus
C) Potassium D) Chlorine
 
Answer & Explanation Answer: D) Chlorine

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Q:

Which of the following statement is INCORRECT regarding Sodium?

A) Sodium reacts vigorously with oxygen and water B) A lot of heat is generated when sodium reacts with water and oxygen
C) It is stored in kerosene D) It is a non-metal
 
Answer & Explanation Answer: D) It is a non-metal

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Q:

Cinnabar is an ore/mineral of

A) Lead B) Manganese
C) Molybdenum D) Mercury
 
Answer & Explanation Answer: D) Mercury

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Q:

The   chemical   properties   of   an   element depend upon

A) the number of isotopes of the element B) the mass number of the element
C) the  total  number  of  neutrons  in  the element D) the    number    of    electrons    in    the outermost shell of the element
 
Answer & Explanation Answer: D) the    number    of    electrons    in    the outermost shell of the element

Explanation:

Chemical  properties of  an element depend   on the number   and   the configuration   of   their   (valence) electrons.

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Q:

Carnotite is an ore/mineral of _____.

A) Beryllium B) Chromium
C) Uranium D) Copper
 
Answer & Explanation Answer: C) Uranium

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Q:

Why does carbon tetrachloride have no dipole moment?

A) Because of same size of carbon and chlorine atoms B) Because of regular tetrahedral structure
C) Because of planar structure D) Because of similar electron affinities of carbon and chlorine
 
Answer & Explanation Answer: B) Because of regular tetrahedral structure

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