1) wife had earlier filed false 498A case which was not regsitered . whether in said complaint false list of ornaments mentioned ?

2) you should rely upon marriage photographs / vide recording of marriage to prove that list mentioned is fase and no such ornaments were brought by wife when she came to her matrimonial home

3) if wife has filed false complaint then you should file case of criminal defamation against wife / her father under section 500 of IPC

4) burden of proof is upon wife to prove allegations made by her in DV case

5) wife can file fresh 498A case if within last one year there have been incidents of dowry harassment / continuous acts of cruelty

You should never bow down to pressure tactics

2) since no ornaments are lying with you even if search warrant is issued you have nothing to fear

3) if complaint is filed police are bound to carry out investigations

Her father can make any list of ornaments, but he has to prove before court that she brought all those ornaments with her to the matrimonial home and where and to whom had she handed over them.

His threats hat he will ask police to raid the house is practically and legally not possible, even if the court passes any such order, you dont object to it, let them search the house and leave with disappointment.

2. If the police did not register FIR, they canot lodge the same complaint again after a year, but they can approach the magistrate court directly with an application under section 156 (3) seeking court's direction to concerned police to initite action on the pending complaint

This is i think just to pressurise us to settle by giving huge amount to them outside court. But how can on false list they can get search warrant of my residence issued?

They cannot get a search warrant so easily.

The court will analyse all the facts and only if convinced about it, the court may allow them to enter into the house with the help of police to take their property if available in the house.

But such orders are very rare, so let him go ahead with his proposed action which you can challenge it properly.