Question

Please check whether proper relative pronouns are used...

1.A creche is a place (where) parents can leave
their young children while they are at work.

2. A barometer is an instrument (which) tells us about the weather.

3. An escalator is a moving stairway (that) carries people up and dpwn between floors.

4. An adjective is a part of speech (that)
describes a noun.

5. An observatory is a place (where) people can make observations on the heavenly bodies like the stars,the weather and so on.

6. A confectioner is a person (who) makes or sells sweets.

Answer 1

Yes, these are correct :))

Answer 2

yes proper relative pronouns are used