a microscope
a telescope
a stereoscope
a spectroscope
D. a spectroscope
quinine sulphate solution
paraffin oil
fluorescein solutions
All the above
Lens
Iris
Retina
Eyelid
it is lighter
it has more water vapour in it
its molecules are close together
its molecules are far apart
increases
decreases
neither increases nor decreases
first increases then decreases
Liquid ammonia
Carbon tetrafluoride
Dichloro-difluoro-methane
Sulphur dioxide
18 km/sec
11.2 km/ sec
21 km/ sec
35 km/ sec
it is pleasing to the eye
it has a traditional colour
it is easily distinguishable
it is most sensitive to the human eye
Albert Einstein
Enrico Fermi
HJ Bhabha
Sir Isaac Newton
resistor
thermocouple
light bulb
neon tube
force
velocity
acceleration
speed
protons and electrons
alpha particles
gamma rays
All the above
0° C
-15° C
4° C
15° C
the mass of its bob
the material of the bob
the amplitude of vibration
acceleration due to the gravity at the site of experiment
Parabolic
Convex
Concave
Plain
helium
argon
hydrogen
oxygen
decreases
increases
remains the same until all the ice has melted and then increases
remains the same
find out the specific gravity of liquids
measure the volumes of liquids
test the purity of milk
determine the strength of acid in car batteries
Daniell cell
Leclanche cell
Dry cell
All the above
Copper
Lead
Tin
Iron
Earth and Mars
Venus and Earth
Mars and Jupiter
Moon and Mars
212°
32°
-40°
0°
Jupiter
Mars
Mercury
Saturn
James Clerk Maxwell
Heinrich Hertz
Thomas Alva Edison
Baird
conservation of mass
Newtonian law of action and reaction
conservation of angular momentum
None of the above
iron
chromium
copper
steel
cohesive force
surface tension
diffusion
viscosity
half
one fourth
four times
two times
coulomb
ampere
volt
watt
direct sun's rays
radiation from earth's surface
radiogenic heat (resulting from radioactive decay)
cosmic rays coming from space
212°
32°
-40°
0°