Chemistry Questions

Q:

Ice floats on water because its density is

A) more than water B) zero
C) less than water D) same as water
 
Answer & Explanation Answer: C) less than water

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Q:

How are elements arranged in the Modern Periodic Table?

A) In the increasing order of their Molecular Mass B) In the increasing order of their Atomic Mass
C) In the increasing order of their Atomic Number D) In the increasing order of their Mass Number
 
Answer & Explanation Answer: B) In the increasing order of their Atomic Mass

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Q:

By how many atomic mass units do subsequent members of homologous series differ?

A) 26 B) 32
C) 20 D) 14
 
Answer & Explanation Answer: D) 14

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Q:

The state of matter can be changed into another state by changing the

A) Volume B) Density
C) Shape D) Temperature
 
Answer & Explanation Answer: D) Temperature

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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:

___ is not a chemical change.

A) Cooking an egg B) Melting an ice cube
C) Baking a cake D) Rotting Bananas
 
Answer & Explanation Answer: B) Melting an ice cube

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Q:

What charge is present on a neutron?

A) positive B) negative  
C) no charge D) No option is correct
 
Answer & Explanation Answer: C) no charge

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Q:

Which process is not associated with mechanical weathering?

A) reactions with oxygen B) frost wedging
C) biological oxygen activity D) unloading
 
Answer & Explanation Answer: A) reactions with oxygen

Explanation:

The process that occurs when physical forces break rock into smaller pieces without changing the rock's chemical composition is called mechanical weathering.

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