State of Matter MCQ question and answer with solution

41

Statement I Glass is not considered as a true compound.
Statement II Glass does not have a definite melting point.

A) Both the statements are individually true and statement II is the correct explanation of statement I B) Both the statements are individually true, but statement II is not the correct explanation of statement I C) Statement I is true, but statement II is false D) Statement I is false, but statement II is true

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Answer & Solution

Answer: Option A

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42

The gas used in a refrigerator is

A) cooled down on flowing B) heated up on flowing C) cooled down when compressed D) cooled down when expanded

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Answer & Solution

Answer: Option D

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43

Glasses and plastics are

A) Amorphous solids B) Supercooled liquids C) Both A and B D) None of the above

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Answer & Solution

Answer: Option C

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44

Which one of the following is not true for the form of carbon known as diamond?

A) It is harder than graphite B) It contains the same percentage of carbon as graphite C) It is a better electric conductor then graphite D) It has different carbon to carbon distance in all directions

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Answer & Solution

Answer: Option C

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45

The process of change from liquid to gas is called . . . . . . . .

A) precipitation B) vaporisation C) decantation D) condensation

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Answer & Solution

Answer: Option B

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46

Amorphous materials are in fact considered as

A) supercooled liquids B) supercooled solids C) covalent network D) molecular crystals

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Answer & Solution

Answer: Option A

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47

Name the law in Physics which states that equal volume of all gases under the same conditions of temperature and pressure contain equal number of molecules.

A) Avogadro's Law B) Boyles's Law C) Ohm's Law D) Charles's Law

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Answer & Solution

Answer: Option A

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48

At very low temperature, oxygen O₂, freezes and forms a crystalline solid, which term best describes the solids?

A) Covalent network B) Molecular crystals C) Metallic D) Ionic

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Answer & Solution

Answer: Option B

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49

The mass of water vapour per unit volume of air is known as

A) relative humidity B) specific humidity C) absolute humidity D) variable humidity

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Answer & Solution

Answer: Option C

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50

Silica in amorphous form is used in

A) photovoltaic cell B) conductivity cell C) standard hydrogen electrode D) None of the above

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Answer & Solution

Answer: Option A

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State of Matter MCQ question and answer with solution | Chemistry Gk MCQs