Solid State - Online Test
Q1. At what temperature range do most of the metals become superconductors?
Answer : Option C
Explaination / Solution:
2K – 5K temperature metal behaves as superconductors.
Q2. Frenkel defects are not found in alkali metal halides because
Answer : Option C
Explaination / Solution:
Alkali metals have frenkel defect because of there large size.
Q3. In cubic close packing(ccp) arrangement, the pattern of the successive layers will be designated as
Answer : Option A
Explaination / Solution:
Ist layer and 4th layer are same.
Q4. Which crystal system has axial angles equal to ?
Answer : Option C
Explaination / Solution:
Orthorhombic crystal system has axial angles
Q5. London forces are present in
Answer : Option B
Explaination / Solution:
London Forces are present in non polar molecular solids.
Q6. Fe3O4is
Answer : Option B
Explaination / Solution:
is Ferromagnetic.
Q7. The unit cell of a substance has cations A+ at the corners of the unit cell and the anions B – in the center. The simplest formul of the substance is
Answer : Option D
Explaination / Solution:
Contribution of A= Contribution of B = 1. Formula is AB.
Q8. The coordination number of AB having rock salt geometry is
Answer : Option C
Explaination / Solution:
NaCl has rock salt structure. Coordination No. is 6.
Q9. MgO has the structure of NaCl. The coordination number of the ions in MgO is
Answer : Option D
Explaination / Solution:
Coordination No. in NaCl is 6.
Q10. Calculate the number of unit cells present in 1 g of gold which has face centered cubic lattice.
Answer : Option D
Explaination / Solution:
Number of unit cells =
