Class 9 Chemistry MCQ
Metals lose their electrons easily because:
They are electronegative
They have electron affinity
They are electropositive
Good conductors of heat
Which one is least oxidizing agent?
F
CI
I
Br
Which one of the following is brittle?
Sodium
Aluminum
Selenium
Magnesium
Sodium – potassium alloy is used in nuclear reactor as a:
catalyst
coolant
reactant
absorber
Pure alkali metals can be cut simply by knife but iron cannot because of alkali metals have:
Strong metallic bonding.
Weak metallic bonding
Non- metallic bonding
Moderate metallic bonding
Which one is the following belongs no Noble Gases?
O
F
Ne
Nil
Which one of the following will not react with dilute HCI?
Sodium
Potassium
Calcium
Carbon
Which one of the following metals burns with a brick red flame?
Sodium
Magnesium
Iron
Calcium
Electropositive character depends upon:
Atomic size
Nuclear charge
Ionization energy
Electron affinity
Which one is least reactive non-metal?
P
C
CI
F
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