METALS AND NON-METALS

Which of the following is a liquid at room temperature?

(a) Iron

(b) Bromine

(c) Iodine

(d) Phosphorus

• A

• B

• C

• D

WHICH METAL IS USED IN THE TERMOMETER AND WHY

• IRON BECAUSE IT IS A METAL

• SODIUM BECAUSE IT IS HIGHLY REACTIVE

• MERCURY BECAUSE IT IS THE ONLY METAL FOUND IN LIQUID FORM AT ROOM TEMPERATURE AND CAN EXPAND ON HEATING

• NONE OF THESE

The most reactive metal is

(a) copper

(b) silver

(c) potassium

(d) calcium

• A

• B

• C

• D

Which one of the following metals is the most ductile?

(a) Aluminium

(b) Copper

(c) Silver

(d) Gold

• A

• B

• C

• D

The metal which is not corroded by air, water and acid is

(a) copper

(b) Silver

(c) aluminium

(d) gold

• A

• B

• C

• D

The best electrical conductor is

(a) gold

(b) copper

(c) silver

(d) aluminium

• A

• B

• C

• D

A mineral from which. a metal can be extracted on the commercial scale, economically is called

(a) ore

(b) metalloid

(C) corrosion

(d) metal

• A

• B

• C

• D

A reaction in which a more reactive metal replaces a less reactive metal from its salt solution is called a/an ________ reaction.

A. combination

B. displacement

C. double displacement

D. addition

• A

• B

• C

• D

The reaction of sulphur and oxygen gives sulphur dioxide gas. The reaction involved is:

S(s)+O2(g)→SO2(g) The nature of this gas is

• basic

• acidic

• neutral

• none of these

The property by which metals can be beaten into sheets is known as ___

A. ductility

B. sonority

C. lusture

D. malleability

• A

• B

• C

• D