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chemistry cdf

Total questions: 15

Worksheet time: 9mins

Name
Class
Date
1.

the substance which readily lose electrons and forms positive ions (cation) are called as

a)

metals

b)

non metals

c)

metalloids

d)

none of the above

2.

metals are

a)

lustrous

b)

conductivity

c)

brittle

d)

both 1 and 2

3.

_________ are homogenous mixture of two or more electrons

a)

substance

b)

alloys

c)

element

4.

metals form (a)   oxides when they react with oxygen

5.

highly reactive metals replace less reactive from its _________

a)

salt solution

b)

aqueous salt solution

c)

both 1 and 2

d)

none

6.

metal salts and hydrogen gas are produced when metals reacts with

a)

acidic acid

b)

dilute acid

c)

dilute solution

d)

none

7.

the substance which readily gain electrons to form negative ions (anion) is called

a)

metals

b)

non metals

c)

metalloids

d)

none

8.

_____ and _______ are major constituents of air

a)

O2

b)

N2

c)

both 1 and 2

9.

graphite and diamond are allotropes of

(a)  

10.

non metals are

a)

brittle

b)

soft

c)

non luster

d)

acts as insulators

11.

non metals are generally form

a)

basic oxides

b)

acidic oxides

12.

______ will not form acid or basic with water

a)

N

b)

CO

c)

O

d)

C

13.

non metals do not react with

a)

dilute acid

b)

water

c)

carbon

d)

salt solution

14.

reactivity series of metals

a)

Cu>Hg>Ag>Au>Pt

b)

Cu>Hg>Au>Ag>Pt

c)

Hg>Ag>Cu>Pt>Au

15.

metals give metallic ________ with chlorine and metallic ______ with hydrogen

a)

hydrides, chlorides

b)

chlorides, hydrides

c)

chlorine, hydrogen

d)

hydrogen, cholorine