(A) DDT
(B) Paper
(C) Aluminium
(D) Plastic
Acid rain is caused due to pollution of atmosphere by?
(A) Oxides of nitrogen and sulphur
(B) Oxides of carbon and nitrogen
(C) Oxides of nitrogen and phosphorous
(D)
A mixture of water and alcohol can be separated by?
(A) Evaporation
(B) Filtration
(C) Decantation
(D) Distillation
Solid bodies are charged due to transfer of?
(A) Neutrons
(B) Protons
(C) Electrons
(D) None of the above
Electron volt is the unit of?
(A) Electric energy
(B) Potential
(C) Potential difference
(D) Electric current
Electric flux through a closed surface does not depends upon?
(A) Its shape
(B) Charge
(C) Medium
(D) None of the above
When an area is held perpendicular to the filed lines then the magnitude of electric flux is?
(A) Zero
(B) Minimum
(C) Maximum
(D) Negative
If potential difference across two plates of a parallel plate capacitor is doubled then the energy stored in it will be?
(A) 2 Times
(B) 4 Times
(C) 8 Times
(D) Remains constant