No they do not have soft shells
Reptile eggs are soft-shelled so that the babies can break out of the shells. Bird eggs are hard-shelled, because baby birds use their beaks to crack the shells of their eggs, but since reptiles don't have beaks to use to break their shells, their eggs have to be soft-shelled.
Yes. Penguins are birds, and birds reproduce by laying eggs with hard shells. This is different from the eggs of reptiles and monotremes, which have leathery shells.
No, their eggs are soft. Caviar is fish eggs.
Well, the eggs have soft thick shells so if they drop the egg(s) they will bounce.
Turtle eggs (and tortoise eggs) can be either hard or soft-shelled, depending on the species.
Land dwelling animal's eggs have shells (hard or soft) to keep them from drying out. Fish eggs don't need shells because being in water they won't dry out.
No. Lizards hatch from eggs, which have soft dry shells.
An egg, by definition, has a shell. What you would be asking then is whether birds can lay "yolks", and the answer is no. Sometimes an eggshell is soft rather than hard (in the case of some snakes and other reptiles). As far as I know, birds lay hard eggs.
They have waterproof (but soft) shells and the reptile usually buries them.
I've never heard of a spider with hard eggs. I always heard they were soft.
Snake eggs have flexible, leathery shells instead of hard ones like bird eggs. This allows the eggs to be more pliable and conform to the shape of the nest, making them easier to lay in tight spaces. The soft shells also make it easier for hatchlings to push their way out when they are ready to emerge.
Platypus eggs are not hard-shelled, like birds' eggs. They are soft-shelled and leathery.