Related Questions

For the allotropic forms of iron, the points of arrest are
A The points where no further change occurs
B Constant for all metals
C The points where there is no further flow of metal
D The points of discontinuity
. Diamond is an allotropic form of
A germanium
B carbon
C silicon
D sulphur
A material is said to be allotropic, if it has
A Fixed structure at all temperatures
B Atoms distributed in random pattern
C Different crystal structures at different temperatures
D Any one of the above
A material is known as allotropic or polymorphic if it
A Has a fixed structure under all conditions
B Exists in several crystal forms at different temperatures
C Responds to heat treatment
D Has its atoms distributed in a random pattern
Heat evolved/absorbed during conversion of a substance from one allotropic form to another is termed as the heat of
A Fusion
B Vaporisation
C Transition
D None of these
Absorption/evolution of heat during conversion of a substance from one allotropic form to another is termed as the heat of
A Sublimation
B Fusion
C Transition
D Vaporisation
The most stable allotropic form of phosphorous is the __________ phosphorous.
A White
B Black
C Yellow
D Red
The most reactive allotropic form of phosphorus is __________ phosphorus.
A Red
B Yellow
C Violet
D Black
Identify the incorrect word/phrase in the following: Many who are (a) boring  with traditional forms of examination (b) can be seen to have passionate interest (c) In solving problems (d) presented  in popular puzzle forms.
A a
B b
C c
D d
A form sorting machine can sort 12 forms in 10 minutes. How many forms can it sort in one and half hours at this rate ?
A 150
B 158
C 152
D 108

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