who is silent in the parliament?

A maths symbol is hidden in the below Bar Graph. Can you decipher it?

What has 88 keys?

John was working on a Chemical Mixture whose weight comprise 90% liquid and 10% solid. The total weight of the mixture is 20 pounds. After a while, John noticed that some of the liquid evaporated and now the liquid comprises just 50% of the weight.

What is the weight of the chemical mixture now?

There are three boxes. One is labeled "APPLES" another is labeled "ORANGES". The last one is labeled "APPLES AND ORANGES". You know that each is labeled incorrectly. You may ask me to pick one fruit from one box which you choose.

How can you label the boxes correctly?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

Can you decipher the two rows to find the hidden word?

Do You See It?

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

There is a five-letter word which has 3 consonants(all are same) and 2 different vowels.
Also, something wrong is associated with the word.

Can you name it?