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Todays' Thought
I’ve learned that mistakes can often be as good a teacher as success.
- Jack Welch
मैंने सीखा है कि गलतियाँ अक्सर उतनी ही अच्छी शिक्षक हो सकती हैं जितनी की सफलता |
- जैक वेल्च


    Chemistry Question & Answer in English

21.
Positron has nearly the same weight as that of -
A.  Alpha-Paralite
B.  Neutron
C.  Proton
D.  Electron

22.
Nucleons are -
A.  Protons and electrons
B.  Electrons and Neutrons
C.  Protons and Neutrons
D.  Electrons, Protons and Neutrons

23.
A nuclear reaction must be balanced in terms of -
A.  Energy
B.  Mass
C.  Mass and Energy
D.  None of these

24.
The molecular weight of cellulose varies between - 
A.  1000 to 20000
B.  100 to 200
C.  20000 to 500000
D.  100000 to 2000000

25.
Parlon is -
A.  Rubber
B.  Terelene
C.  Nylon - 6
D.  Oxlon

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