Chemistry Questions

Q:

Most liquids that conduct electricity are solutions of acids, bases and ______.

A) Copper B) Aluminium
C) Salts D) Iron
 
Answer & Explanation Answer: C) Salts

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Q:

The passage of an electric current through a conducting liquid causes ___________.

A) Galvanisation B) Evaporation
C) Physical Reaction D) Chemical Reaction
 
Answer & Explanation Answer: D) Chemical Reaction

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Q:

The process of depositing a layer of any desired metal on another material by means of electricity is called ___________.

A) Electroplating B) Galvanisation
C) Rusting D) Crystallisation
 
Answer & Explanation Answer: A) Electroplating

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1 899
Q:

The salt concentration (measured as salinity in parts per thousand), is greater than _______ % in hypersaline lagoons.

A) 50 B) 100
C) 150 D) 200
 
Answer & Explanation Answer: B) 100

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Q:

What is formed when Carbon Dioxide is passed through Lime Water?

A) Copper Sulphate B) Calcium Carbonate
C) Magnesium Oxide D) Baking Soda
 
Answer & Explanation Answer: B) Calcium Carbonate

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Q:

The property of metals by which they can be beaten into thin sheets is called _______________.

A) ductility B) malleability
C) viscosity D) tensile strength
 
Answer & Explanation Answer: B) malleability

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Q:

A change in which one or more new substances are formed is called _________.

A) Physical Change B) Chemical Change
C) Rusting D) Galvanisation
 
Answer & Explanation Answer: B) Chemical Change

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Q:

The main mineral constituents of the continental mass are ________ and alumina.

A) iron oxide B) silica
C) water D) oxygen
 
Answer & Explanation Answer: B) silica

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