301. Among the halogens, which element has the highest electronegativity?
a) Fluorine
b) Chlorine
c) Bromine
d) Iodine
302. Which halogen is a diatomic gas at room temperature and pressure?
a) Fluorine
b) Chlorine
c) Bromine
d) Iodine
303. Which halogen is a reddish-brown liquid at room temperature and pressure?
a) Fluorine
b) Chlorine
c) Bromine
d) Iodine
304. Which halogen is a purple solid at room temperature and pressure?
a) Fluorine
b) Chlorine
c) Bromine
d) Iodine
305. Which of the halogens is the least reactive?
a) Fluorine
b) Chlorine
c) Bromine
d) Iodine
306. Halogens readily form compounds with alkali metals, and the resulting compounds are known as:
a) Halides
b) Oxides
c) Hydrides
d) Sulfides
307. According to Le Chatelier’s principle in a reversible reaction between solid and liquid, the amount of heat added is?
(A) Increase of the concentration of liquid
(B) Decrease of the concentration of liquid
C. Increase of the concentration of solid
(D) Decrease the concentration of solid
308. In benzene, all carbon atoms are __ hybridization.
(A) Sp
B. Sp2
(C) Sp3
(D) None of the above
309. Number of Pi electrons in benzene is?
(A) 3e
(B) 4e
C. 6e
(D) 8e
310. In benzene, there are how many types of carbon atom?
A. 1
(B) 2
(C) 3
(D) 4
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