I am moving from USA to India permanently. I have my 

1) Refrigerator
2) Washers/Dryer
3) Threadmill
4) Microwave Oven
5)  Gas based cooking range at my home
6) Some chandalier's/Lamp Shades

which i would like to take from here to India. I believe some of this
will run on 220v/60Hz here in the US. Now, if i were to take these to
India (where the voltage is 220v/50Hz), would these machines need a
converter (either voltage or frequency) ?

If they dont need a convertor, would it work ? are there any caveats ? 

Thanks,

-bw

Check the electric plates on all the items. A surprising amount of
stuff will run on other voltage and frequency.

The chandeliers may need to be rewired for the heavier voltage. Need
to have an electrician look at 'em. Do it in India, it's cheaper.
You'll need 220v light bulbs, the 110v will burn out.

Other stuff should just need a voltage transformer, takes 220v in and
puts out 110v. Doesn't change the frequency; no need to, but clocks
might run slow (maybe, but probably not). Any large city in the uS
will have an export shop that sells them. Max price is a dime or so
per watt on the upper end (5Kw), 25 cents on the low end (100w).
Either get individual ones for each appliance or one biggie and wire
the house with marked plugs.

You really oughtta sell all the stuff and buy local in India. It's
pretty cheap and can be serviced.

Gas range might not work with the gas in India, may not have
connectors and may not be safe. It's probably designed for LPG or
propane and I think most of the gas in India is butane.