Worksheetsmetals and non metals class 10
Total questions: 13
Worksheet time: 2mins
which metal is found in free state
gold
platinium
silver
iron
what is the role of dielectric constant ?
to weaken the force of attraction between ions of ionic compounds .
to break the force of attraction between ions of ionic compounds.
to increase the force of attraction between ions of ionic compounds .
both a and b
which is the lightest liquid metal ?
lithium
caesium
mercury
non of these
generally metals react with acid and liberate hydrogen gas but with which acid metals does not liberate hydrogen gas ?
acetic acid [ ch3cooh ]
hydrochloric acid [ hcl ]
nitric acid [ hno3 ]
carbonic acid [ h2co3 ]
metals does not liberate h2 gas with hno3 as it is a very -
(a)
what is amalgam ?
alloy of a metal with iron
alloy of a metal with mercury
alloy of a metal with brass
alloy of a metal with magnalium
which metal is the hardest known substance ?
bromine
sodium
neon
diamond
Only a few reactive metals react with hydrogen to form ?
metal hydrates
metal hydrides
metal hydrites
none of these
what is galvanization ?
applying a coating of zinc to prevent form corrosion
applying a coating of aluminium to prevent form oxidation
applying a coating of iron to prevent form corrosion
applying a coating of both aluminium and zinc to prevent form corrosion
an electrolytic process for producing thick oxide coatings, usually on aluminium and its alloys -
electrolysis
nuclear magnetic resonance
anodizing
electrodising
solder is an alloy of -
lead and iron
tin and zinc
aluminium and mercury
lead and tin
ionic compounds are soluble in --------- and insoluble in ----------
organic solvents , water
water , organic solvents
water , acid
acid , base
Which of the following property is generally not shown by metals?
Electrical conduction
sonorous
dullness
ductility
