A. Forces between nuclei
B. Forces between protons
C. Electron-pair bonds
D. None of the above
A. Covalent
B. Electrovalent
C. Co-ordinate
D. None of the above
A. 100 O cm
B. 6000 O cm
C. 3 x 105 O m
D. 6 x 10-8 O cm
A. An insulator
B. An intrinsic semiconductor
C. p-type semiconductor
D. n-type semiconductor
A. Positively charged
B. Negatively charged
C. Electrically neutral
D. None of the above
A. Free electrons
B. Holes
C. Valence electrons
D. Bound electrons
A. Goes up
B. Goes down
C. Remains the same
D. Can’t say
A. 2
B. 3
C. 6
D. 4
A. Positive
B. Zero
C. Negative
D. None of the above
A. water pumps
B. jaw crushers
C. centrifugal blowers
D. none of the above