The chemical formula of Sapphire (Ruby) is ? [66th BPSC Re-exam] 1) Al2O3 2) AL3O2 3) N2O 4) NO2

The quality of Petrol is expressed by : [66th BPSC Re-exam] 1) Cetane Number 2) Octane number 3) butane number 4) Reynolds number

Which of the following has highest melting point ? [66th BPSC Re-exam] 1) Boron 2) Iron 3) Silicon 4) Aluminium

When a sound wave goes from one medium to another, the quantity that remains unchanged : [66th BPSC Re-exam] 1) Frequency 2) Amplitude 3) Wavelength 4) speed ...

Ohm meter is a unit of : [66th BPSC Re-exam] 1) resistance 2) conductance 3) resistivity 4) charge

Light year is a unit of : [66th BPSC Re-exam] 1) time 2) distance 3) speed 4) force

Which particle is free of charge ? [66th BPSC Re-exam] 1) alpha particle 2) electron 3) neutron 4) proton

An example of longitudinal wave is : [66th BPSC Re-exam] 1) Radio wave 2) sound wave 3) Gamma Ray 4) X Ray

The power of lens is measured in : [66th BPSC Re-exam] 1) Watt 2) Ampere 3) Volt 4) Dioptre

To diagnose the medical conditions, MRI technique is used. Which is not used in MRI ? [66th BPSC Re-exam] 1) Magnetic field 2) X-ray 3) Radio wave 4) Gamma ...