288) Which of the following conditions favours the existence of a substance in the solid state?

High temperature

Low temperature

High thermal energy

Weak cohesive forces

Answer is:

Low temperature

Physical Chemistry MCQ with Answers

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289) Which of the following is not a characteristic of a crystalline solid?

Definite and characteristic heat of fusion.

Isotropic nature

A regular periodically repeated pattern of arrangement of constituent particles in the entire crystal.

A true solid

Answer is:

Isotropic nature

290) Which of the following is an amorphous solid?

Graphite (C)

Quartz glass (SiO2)

Chrome alum

Silicon carbide (SiC)

Answer is:

Quartz glass (SiO2)

291) Which of the following is true about the value of refractive index of quartz glass?

Same in all directions

Different in different directions

Cannot be measured

Always zero

Answer is:

Same in all directions

292) Which of the following statement is not true about amorphous solids?

On heating they may become crystalline at certain temperature.

They may become crystalline on keeping for long time.

Amorphous solids can be moulded by heating.

They are anisotropic in nature.

Answer is:

They are anisotropic in nature.

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288) Which of the following conditions favours the existence of a substance in the solid state?

Low temperature

Physical Chemistry MCQ with Answers

Related Physical Chemistry MCQ with Answers

289) Which of the following is not a characteristic of a crystalline solid?

Isotropic nature

290) Which of the following is an amorphous solid?

Quartz glass (SiO2)

291) Which of the following is true about the value of refractive index of quartz glass?

Same in all directions

292) Which of the following statement is not true about amorphous solids?

They are anisotropic in nature.

Physical Chemistry MCQ with Answers