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Todays' Thought
Winners don’t do different things, they do things differently.
- Shiv Khera
जीतने वाले अलग चीजें नहीं करते, वो चीजों को अलग तरह से करते हैं |
- शिव खेड़ा


    Chemistry Question & Answer in English

26.
Polymer used in bullet proof glass is -
A.  Lexane
B.  Nomax
C.  pmma
D.  Kevlar

27.
The main actine constituent of tea and coffee is -
A.  Nicotine
B.  Chlorophyll
C.  Caffeine
D.  Aspirin

28.
The hardest form of carbon is -
A.  Coke
B.  Graphite
C.  Diamond
D.  Charcoal

29.
The concept of elliptical  orbital was suggested by -
A.  Thomson
B.  Neil Bohr
C.  Rutherford
D.  Sommerfeld

30.
Water drops are spherical because of -
A.  Polarity
B.  Viscosity
C.  Surface Tension
D.  Density

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