Chapter-4 - 11th - Liquids and Solids Preparation Multiple Questions and Answers.




51.a=b=c, ?=?=?=90º is a representation of crystal system
A. Monoclinic
B. Triclinic
C. Hexagonal
D. Trigonal

52.The phenomenon in which a compound exists in two or more crystalline forms is called
A. Isomorphism
B. Polymorphism
C. Anisotropy
D. Allotropy

53.Which solids are called true solids?
A. Metallic
B. Amorphous
C. Crystalline
D. Vitreous

54.Buckyballs is an allotropic form of
A. Sulphur
B. Carbon
C. Silica
D. Tin

55.The number amino acid units for each turn of the helix on average are
A. 21
B. 23
C. 25
D. 27

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