The zero coupon bond is more sensitive to change in rate (inflation) because the market value is not based on a fixed coupon.

depends on the collateral supporting the bond.

the main difference between deep discount bond and zero coupon bond is that in case of zero coupon bond no int is payable periodically while in case of deep discount bond int is payable periodically at very lower rate say 2% per annum

A zero-coupon bond is a bond bought at a price lower than its face value, with the face value repaid at the time of maturity. It does not make periodic interest payments, or have so-called "coupons," hence the term zero-coupon bond.

That would depend on the specifics of the individual bond.