Sure, you can put tools in checked luggage, or at least most tools. If an oxyacetylene torch is considered to be a tool, that would not be a good item to put in your checked luggage, since there is some potential for explosion.
You cannot put tools in your carry-on luggage on an airplane. They may be in your checked luggage to fly, or if you travel by bus or train.
Yes you can,
If this is sealed, then you can but if not, better to put this in the checked bagage
Put a rubber band on it holding the cap on, then put it in a Ziploc bag.
Yes alcohol in checked luggage is permisible.
If its in your checked luggage, not your carry ons.
Well, it is a chemical but non-hazardous. If you put it in checked luggage there should not be a problem.
yesshh, i brought it on the flight to Australia last week, you have to put it in a clear plastic bag though (: x
Yes, checked luggage is X-rayed and may be subject to further screening.
Yes, wine maybe carried in checked luggage.
Yes, you can pack knives in your checked luggage.
Checked luggage is that which has been checked in: weighed, labelled, and taken away to be loaded onto the plane. You don't see it again until you have landed at the other end and the plane is unloaded. Hand luggage is that which you can take onto the plane with you and have access to during the flight.