361. Which of the following shows electrical conduction_____?
A. Potassium
B. Graphite
C. Diamond
D. Sodium
362. Cassiterite is an ore of_______?
A. Mn
B. Ni
C. Sb
D. Sn
363. Percentage of lead in lead pencil is________?
A. Zero
B. 20
C. 80
D. 70
364. In borax bead test which compound is formed_________?
A. Ortho burate
B. Meta borate
C. Double oxide
D. Tetra borate
365. Water molecule is________?
A. V-shaped
B. Angular
C. Pyramidal
D. Triangular planer
366. I3( Tri-iodine) has shape_________?
A. Trigonal bipyramidal
B. Linear
C. Square bipyramidal
D. Both A and C
367. BeCl2 has the hybrid orbitaks of type_______?
A. Sp2
B. Sp3
C. Sp
D. dsp2
368. Molecular orbital Theory is also called_________?
A. Bonding theory
B. Band theory
C. Antibondingtheory
D.π and σ bonding theory
369. Formula of Galena is________?
A. PbS
B. HgS
C. AS2S3
D. FeS2
370. Ethylenediamine is ligand________?
A. monodentate
B. Bidentate
C. tri dentate
D. Polydentate