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Crystallography



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Q1. Which one of the following is most symmetrical?

(a) Simple cubic cell
(b) Hexagonal
(c) Triclinic
(d) Tetragonal

Q2. Which of the following axis system is being satisfied by rhombohedral (trigonal) crystal system?

(a) a = b = c, ? = ? = ? = 90o
(b) a ? b = c, ? = ? = ? = 90o
(c) a = b ? c, ? = ? = ? = 90o
(d) a = b = c, ? = ? = ? ? 90o

Q3. Which of the following axis system is being satisfied by orthorhombic crystal system?

(a) a = b = c, ? = ? = ? = 90o
(b) a ? b ? c, ? = ? = ? = 90o
(c) a = b ? c, ? = ? = ? = 90o
(d) a = b = c, ? ? ? = ? = 90o

Q4. Which of the following axis system is being satisfied by tetragonal crystal system?

(a) a = b = c, ? = ? = ? = 90o
(b) a ? b ? c, ? = ? = ? = 90o
(c) a = b ? c, ? = ? = ? = 90o
(d) a = b = c, ? ? ? = ? = 90o

Q5. Which of the following axis system is being satisfied by cubic crystal system?

(a) a = b = c, ? = ? = ? = 90o
(b) a ? b = c, ? = ? = ? = 90o
(c) a = b ? c, ? = ? = ? = 90o
(d) a = b = c, ? ? ? = ? = 90o

Q6. Which of the following factor is not responsible for the formation of a non-crystalline structure?

(a) Atomic packing has open structure
(b) Primary bonds are absent
(c) Formation of 1-dimensional chain molecule
(d) Strong secondary bond

Q7. Which of the following is characteristic of non-crystalline structures?

(a) Long range of periodicity
(b) Well defined structure and geometry
(c) Low density
(d) Sharp diffraction pattern

Q8. Which of the following is a characteristic of crystalline structure?

(a) High density
(b) Low density
(c) Range of melting point
(d) Short range of order

Q9. Which of the following has less crystallinity?

(a) Iron
(b) Nickel
(c) High density polythene
(d) Low density polythene

Q10. Which of the following has a non-crystalline structure?

(a) Iron
(b) Quartz
(c) Silica glass
(d) Tungsten


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0 Answer
477 views

1° C Rise In Temperature Is Equal To A Rise Of

Modified 236 Year Ago

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477
236 Year Ago

1° C Rise In Temperature Is Equal To A Rise Of

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0 Answer
454 views

In A Closed Flask Of 5 Litres, 1.0 G Of H2 Is Headed From 300 To 600 K. Which Statement Is Not Correct

Modified 236 Year Ago

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454
236 Year Ago

In A Closed Flask Of 5 Litres, 1.0 G Of H2 Is Headed From 300 To 600 K. Which Statement Is Not Correct

0 votes
0 Answer
436 views

Equal Amounts Of Two Gases Of Molecular Weight 4 And 40 Are Mixed. The Pressure Of The Mixture Is 1.1 Atm. The Partial Pressure Of The Light Gas In This Mixture Is

Modified 236 Year Ago

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436
236 Year Ago

Equal Amounts Of Two Gases Of Molecular Weight 4 And 40 Are Mixed. The Pressure Of The Mixture Is 1.1 Atm. The Partial Pressure Of The Light Gas In This Mixture Is

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406 views

Assertion : Effusion Rate Of Oxygen Is Smaller Than Nitrogen. Reason : Molecular Size Of Nitrogen Is Smaller Than Oxygen.

Modified 236 Year Ago

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406
236 Year Ago

Assertion : Effusion Rate Of Oxygen Is Smaller Than Nitrogen. Reason : Molecular Size Of Nitrogen Is Smaller Than Oxygen.

0 votes
0 Answer
400 views

Molecules/ions And Their Magnetic Properties Are Given Below

Modified 236 Year Ago

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236 Year Ago

Molecules/ions And Their Magnetic Properties Are Given Below

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0 Answer
400 views

Assertion : We Air Is Heavier Than Dry Air. Reason : The Density Of A Dry Air Is More Than Density Of Water.

Modified 236 Year Ago

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400
236 Year Ago

Assertion : We Air Is Heavier Than Dry Air. Reason : The Density Of A Dry Air Is More Than Density Of Water.

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