CBSE
Essential component of amalgam is :
Fe
Pb
Hg
Cr
Assertion : for Mn3+/Mn2+ is more positive than Cr3+/Cr3+
Reason : The third ionization energy of Mn is larger than that of Cr.
If both assertion and reason are true and reason is the correct explanation of the assertion.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
If assertion is true, but reason is false.
Both assertion and reason are false statements.
CuSO4 does not react with :
Fe
Ag
Zn
Mg
Assertion : Copper sulphate solution is not stored in zinc vessel.
Reason : Zinc forms complex with CuSO4.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
What is the name of element with atomic number 105 ?
Kurchatovium
Dubnium
Nobelium
Holmium
Reason of passively of iron is :
Fe2O3
Fe3O4
FeO
Fe2O4 . 3H2O
What is the general outer electronic configuration of the coinage metals ?
ns2 np6
(n-1)d10 ns1
(n-1)d10 ns2
(n-1)d9 ns2
Fuel used in nuclear reactor is :
plutonium
thorium
radium
deuterium
Assertion : Magnetic moment of Dy is the highest among the lanthanoids.
Reason : Orbital motion contributes magnetic moment.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
The compound used in enrichment ofuranium for nuclear power plant is
U3O8
UF6
UO2(NO3)2
UCl4