Q. A cyclotron’s oscillator frequency is 10 MHz . What should be the operating magnetic field for accelerating protons? If the radius r of its ‘dees’ is 60 cm, calculate the kinetic energy (in MeV ) of the proton beam produced by the accelerator.

Q. (1) Latent heat of steam is 540 cal/gm. Express this in SI units. (2) A liquid has a mass of 200 gm and a specific heat capacity of 0.8cal/gm/°C. Find water equivalent of the liquid.

Q. Assertion: Charge on the complex of ferric ion with EDTA is minus one. Reason: EDTA is a hexadentate ligand

Q. Define deficiency disease.

Q. Give two examples of phylum Ctenophora.

Q. The Making of the National Movement : 1870s – 1947 What were Curzon’s two real motives behind the Partition of Bengal?

Q. SO2 can act as oxidising as well as reducing agent. Why?

Q. Name two poisonous gases which can be prepared from chlorine gas.

Q. Name the following: Biotic constituents of soil.

Q. Name the phylum and class to which cockroach belongs.