Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

Let's play a word game. Following are some meaningless words that can be completed by adding random letters on either side of the word.

For example, the word "rdo" can be formed into "pardon".

Using the same technique, can you complete the given words?
ecalc
airb
rinci
tibac
uidel
gorit
igna
eyho

Different lights make me strange by changing me into different sizes. What am I?

Can it be possible to build a house that has all its four walls facing towards the South?

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

Take one out and scratch my head, I am now black but once was red. What am I?

I had an infinite supply of water and 5 litres and 3 litres jars.

How would you measure exactly 4 litres in the least number of steps?

On a beautiful Sunday morning, You ordered a hot tea to your hotel room and suddenly you remember an important thing that needed to be done right now will take around 3 minutes to complete.
Like most people you like your tea to be hot while drinking so, when should you pour cream in the tea?
1. straight away
2. Just people, you drink the team
3. Its does not matter

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

I have a mouth but I don't eat.
I have a bank but have no money.
I have a bed but i dont sleep.
I wave but have no hands.

Who Am I ?