There's no special word for kosher in Spanish. It's just kosher.
Seer fish, also known as Spanish mackerel, is kosher.
Not all of them are kosher. It will say on the box.
The label has to say "Kosher for Passover"
Sendha Namak is Kosher salt in Hindi.
It would have to say "Kosher for Passover" on the can.
Yes, provided that only kosher ingredients are included in it, and that it's mixed and baked with kosher utensils.
I say yes
It has to say so on the label of the bottle.
Every ingredient of a kosher food has to be kosher, and the product processed in a plant that has kosher supervision. For a thorough explanation of what makes something kosher, take a look at the question in the related link below. Its also more expensive on the grounds that somebody had to look at it and say it was kosher. _____ Most major brands of potato chips are kosher although some of the flavours might not be kosher. In general, getting kosher certification lowers the price of an item because it increases the company's customer base.
Noodles that say Kosher for Passover on the box.
If they don't explicitly say they are, they aren't.
Sea salt is a mineral and so long as anything that is non-kosher is not added to the dry salt crystals the salt is kosher. To say that sea salt is not kosher because non-kosher aquatic life lives in the ocean would be the same as saying that all fruits and vegetables are not kosher because they've come in contact with bugs.