Diamond is harder than Graphite because of___________?
A. Difference in crystalline Structure
B. Tetrahedral structure of diamond
C. Difference in layer of atoms
D. None of these
Submitted by: Malik Asghar Hussain
A. Difference in crystalline Structure
B. Tetrahedral structure of diamond
C. Difference in layer of atoms
D. None of these
Submitted by: Malik Asghar Hussain
A. Sneezing
B. Faeces
C. Spit
D. Water
‘Black holes’ refers to_______________?
A. Holes occurring in heavenly bodies
B. Bright spots on the sun
C. Collapsing object of high density
D. Collapsing object of low density
The setting sun often looks oval in the shape because of__________?
A. The fact that sun really becomes oval in the evening
B. Refraction of rays of sun passing through the atmosphere
C. Optical Illusion
D. Dispersion
A. Beta Rays
B. Alpha Rays
C. Gamma Rays
D. None of these
A. Turmeric on filter paper
B. Silica gel coated with silver nitrate
C. potassium permanganate-sulphuric acid
D. Potassium dichromatic-sulphuric acid
A. Drosometer
B. Ombrometer
C. Micrometer
D. Pyrometer