Chemistry Questions

Q:

_______________ of a material is defined as the minimum amount of the work necessary to remove a free electron from the surface of the material.

A) The electro-repulsive force B) The coulomb factor
C) The power factor D) The work function
 
Answer & Explanation Answer: D) The work function

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Q:

Vinegar and Baking Soda together produce ____________.

A) Copper B) Carbon Dioxide
C) Copper Sulphate D) Magnesium Oxide
 
Answer & Explanation Answer: B) Carbon Dioxide

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Q:

Which of the following is a mixture?

A) Water B) Air
C) Carbon dioxide D) Oxygen
 
Answer & Explanation Answer: B) Air

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Q:

Ozone is represented as _____.

A) O3 B) H2O2
C) Cl2O D) N2O
 
Answer & Explanation Answer: A) O3

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Q:

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

A) Aluminium B) Silicon
C) Chlorine D) Magnesium
 
Answer & Explanation Answer: C) Chlorine

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Q:

Metals are placed on which side of the Modern Periodic table?

A) Top row B) Left side
C) Right side D) Bottom row
 
Answer & Explanation Answer: B) Left side

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Q:

Dried fruit like raisins when soaked in water, bulge and get filled with water. What is the scientific reason that explains this daily life event?

 

A) Osmosis B) Active Transport
C) Diffusion D) Passive Transport
 
Answer & Explanation Answer: A) Osmosis

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Q:

What is the name of the process where gas is directly converted to solids called?

A) Sublimation B) Deposition
C) Condensation D) Evaporation
 
Answer & Explanation Answer: B) Deposition

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