Question

Question 1 : Teflon is form from a derivative of-------------
Chlorine
Iodine
Bromine
Flourine

Question 2 : The thermal stability of hydrogen halides-------------------
has no fix pattern across the group
is constant across the group
decreases from HF to HI
increases from HF to HI

Question 3 : Which of these halogens shows no basic properties
Flourine
Bromine
Chlorine
Iodine

Question 4 : A derivative of ------------- is used in making photographic plates
Flourine
Iodine
Bromine
Chlorine

Question 5 : One of these is not a pseudo halogen.
Teflon
selenocyanogen
cyanogen
thiocyanogen

Answer 1

Flourine
decreases from HF to HI
Flourine
Bromine
Teflon