Elements And Metals : 2

Question 1 :

The chemical (ethyl mercaptan) added to the otherwise odourless LPG cooking gas for imparting a detectable smell to the gas is a compound of


A). bromine
B). fluorine
C). chlorine
D). sulphur
Answer : Option D

Question 2 :

The element common to all acids is


A). hydrogen
B). carbon
C). sulphur
D). oxygen
Answer : Option A

Question 3 :

Non stick cooking utensils are coated with


A). Teflon
B). PVC
C). black paint
D). polystyrene
Answer : Option A

Question 4 :

Monazite is an ore of


A). titanium
B). zirconium
C). iron
D). thorium
Answer : Option D

Question 5 :

Carbon, diamond and graphite are together called


A). allotropes
B). isomers
C). isomorphs
D). isotopes
Answer : Option A