Which of the following properties is not often present in organic compounds?
(A) soluble in water
(B) low melting point
(C) flammability
(D) all
What is an alloy of copper and tin called?
(A) brass
(B) Duralumin
(C) Bronze
(D) Solder
Gas is produced by the reaction of steam on iron?
(A) Hydrogen gas
(B) Oxygen gas
(C) ammonia gas
(D) Nitrogen gas
Which non-metal is liquid at room temperature?
(A) mercury
(B) aluminum
(C) Bromine
(D) Copper
If an alloy contains a metal mercury, what is it called?
(A) mercury alloy
(B) Iron Alloy
(C) Amalgam
(D) Zinc Alloy
The alloy of lead and tin is called?
(A) Steel
(B) metalloids
(C) Gun Maton
(D) solder
It is easy to make stone by beating metals. Which property of the metal does it indicate?
(A) hardness
(B) malleability
(C) conductivity
(D) Activity
Which allotrope of carbon is more rigid?
(A) graphite
(B) Diamond
(C) Coal
(D) Kajal
is silica?
(A) metalloids
(B) metal
(C) non-metals
(D) none of these
Which compound is formed when copper is burnt in air?
(A) copper hydroxide
(B) copper hydride
(C) Copper Oxide
(D) nothing
Get the Examsbook Prep App Today