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11. How many Faradays are required to reduce 1 mole of Br02 - to Br-?
3
5
4
6
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12. Silicon carbide is also known as __ (NTSE Odisha, Stage-I, 2014-15)
Carborundum
Cyanogen
Silane
Silicone
13. Which of the following evolve 02 on treatment with water? (NTSE Jharkhand, Stage-I, 2014-15)
F2
CI2
Na
P4
14. Adding an alpha particle to nucleus of sodium atom product will be (NTSE Rajasthan, Stage-I, 2014-15)
Na+
Mg2+
A12+
AI
15. Which of the following is thermo-resistant polymer? (NTSE Madhya Pradesh, Stage-I, 2014-15)
Orion
Polythene
Teflon
Bakelite
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