A. Hydrogen with oxygen
B. Methane with air
C. Oxygen with actylene
D. Carbon dioxide with ethane
A. Sodium acetate
B. Calcium oxalate
C. Magnesium sulphate
D. Calcium
A. A denser medium to a rarer medium
B. A rarer medium to a denser medium
C. A rarer medium to a denser medium and the angle of incidence is less than the critical angle
D. A rarer medium to a denser medium and the angle of incidence is greater than the critical angle
A. Quartz crystal
B. Titanium needle
C. Barium titanate ceramic
D. Laser beam
A. Reflection and transmission
B. Reflection and diffraction
C. Diffraction and transmission
D. Refraction, diffraction and transmission
A. Stable
B. Isobars
C. Isotopes
D. Radioactive
A. Radio-waves
B. Infrared
C. Ultraviolet
D. Visible
A. The tungsten filament evaporates and collects there
B. Glass undergoes a change due to the heat
C. The heat of the bulb scorches the glass at the top
D. Dust inside the bulb condenses on the top
A. 10,000
B. 1,00,000
C. 2,00,000
D. 1,50,000
A. Nuclear fusion
B. Spontaneous fission
C. Controlled chain reaction
D. Uncontrolled chain reaction