Questions

Dry ice or Cardice is the solid form of Carbon dioxide.

1. It has an advantage of lower temperature than the water ice and doesn't leave any residue.

2. The reason why it is called as Dry ice is because unlike the normal ice, it won't melt into liquid form. It directly evaporates into the air as gas. That is Solid to gas form passing through liquid state is a phenomenon called as Sublimation.

3. The primary use of dry ice is as cooling agent.

TRAP, RST7.5, RST6.5, RST5.5, INTR.

1st copper wire: R = pl/A = pl/ πr2

2ndcopper wire: R’ = p’l’/A’ = pl/(4 πr2) = R/4

If joined in parallel, (1/Req) = (1/R) + (1/R’)

= 1/R + 4/R1/Req= 5/R

Req= R/5

The motif of Hampi with Chariot is printed on the reverse of New Rs. 50 currency note in India.

Distance between two Consecutive Crests or two Consecutive Troughs is called Wavelength. But the distance between crest and adjacent trough is half the wavelength.

That is the distance between adjacent crest and trough is called Half the wavelength.

Estate Duty which was introduced in 1953, was withdrawn from March 1, 1985.