Physics Mock Test

Q1 Brass gets discoloured in air because of the presence of which of the following gases in air?
Oxygen
Carbon dioxide
Hydrogen sulphide
Nitrogen

Q2 Chlorophyll is a naturally occurring chelate compound in which central metal is.
iron
copper
calcium
magnesium

Q3 Which of the following is used in pencils?
Graphite
Lead
Phosphorous
Silicon

Q4 Which of the following metals forms an amalgam with other metals?
Tin
Lead
Mercury
Zinc

Q5 Which of the following laws states the relationship between the current flowing through a metallic wire and the potential difference across its terminals?
Law of charges
Joule’s law
Radiation law
Ohm’s law