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 Chemistry Questions

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Q:

Which of the following statements is Incorrect?

A) Atomic size increases from top to bottom B) All the elements of a group have same valency
C) Isotopes of the same elements are placed in the same group D) Atomic radius generally decreases from left to right
 
Answer & Explanation Answer: C) Isotopes of the same elements are placed in the same group

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Q:

What product is formed when electricity is passed through an aqueous solution of sodium chloride?

A) Sodium and Chlorine B) Sodium oxide
C) Sodium hydroxide D) Sodium and water
 
Answer & Explanation Answer: C) Sodium hydroxide

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Q:

The number of valence electrons in an atom of Phosphorous is

A) 4 B) 3
C) 2 D) 5
 
Answer & Explanation Answer: D) 5

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Q:

Blotting paper absorbs ink due to

A) Coarse nature of paper B) Osmosis
C) Capillary action D) Siphoning
 
Answer & Explanation Answer: C) Capillary action

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Q:

___ is used as a stabilizer in ice cream.

A) Gelatin B) Sugar
C) Milk D) Strawberry
 
Answer & Explanation Answer: A) Gelatin

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Q:

Which of the following statements is wrong with regard to strong acids?

A) Strong acids react very rapidly with other substances (such as metal carbonates and metal hydrogen carbonates) B) Hydrochloric acid, Sulphuric acid and Nitric acid are strong acids
C) Acids are those chemical substances that have a salty taste D) All minerals acids are strong acids
 
Answer & Explanation Answer: C) Acids are those chemical substances that have a salty taste

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Q:

Which of the following type of medicine is used to treat indigestion?

A) Sulpha drug B) Antihistamine
C) Antibiotic D) Antacid
 
Answer & Explanation Answer: D) Antacid

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Q:

Which of the following solutions is the most acidic among them all?

A) Solution with pH value 0 B) Solution with pH value 6
C) Solution with pH value 1 D) Solution with pH value 7
 
Answer & Explanation Answer: A) Solution with pH value 0

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