Water molecule is:
A. V-shaped
B. Angular
C. Pyramidal
D. Triangular planer
In borax bead test which compound is formed:
A. Ortho burate
B. Meta borate
C. Double oxide
D. Tetra borate
Percentage of lead in lead pencil is:
A. Zero
B. 20
C. 80
D. 70
Cassiterite is an ore of:
A. Mn
B. Ni
C. Sb
D. Sn
Which of the following shows electrical conduction:
A. Potassium
B. Graphite
C. Diamond
D. Sodium
The type of hybridisation of boron in diborane is:
A. Sp- hybridisation
B. Sp2- hybridisation
C. Sp3- hybridisation
D. Sp3d2- hybridisation
Which of the following element has the maximum electron affinity:
A. Cl
B. Br
C. I
D. F
The structure of H2O2 is:
A. Planar
B. Non- polar
C. Spherical
D. Linear
The volume strength of 1.5 N H2O2 solution is:
A. 4.8
B. 5.2
C. 8.8
D. 8.4
Electronic Configuration of Calcium (Ca) atom may be written as:
A. Ne, 4p2
B. Ar, 4s2
C. Ne, 4s2
D. Kr,4p2
