EMOT CHEMISTRY MOCK 1.0

Lithium with atomic number of 3 is a
A . Strong reducing agent
B. Strong oxidizing agent
C. Weak reducing agent
D . Weak oxidizing agent
The conductivity of an electrolyte -----as it's concentration reduces?
Increases
Decreases
Is unaffected
Becomes resistance
The most reactive halogen is
F2
Cl2
I2
Br2
Which of the following metals can be used as a sacrificial cathode for preventing corrosion of an iron pipe
Ag
Cu
Mg
Mn
The PH of a solution containing 0.5×10^-6M H2SO4 is
6.3
6.5
6.0
5.0
The amount of methane molecules CH4 in 8.0 grams of methane is
8mol
128mol
0.5mol
3.01×10^23
An element which exhibit more than one crystalline form is said to exhibit
Polymorphism
Isotopy
Allotropy
Isomerism
The oxidation number of BaO2 is
-2
-4
-1
0
The quantum number L in an atom defines
The shell k l m n
Orbital
Multiplicity
Degeneracy if orbitals
Which of the following cannot displace hydrogen from steam
Copper
Iron
Strontium
Lithium
0
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