I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

I am a five-letter word and comprises two different vowels and three same consonants. I am so strong that I can spoil your entire work.

Can you find out who am I?

I’m tall when I’m young, and I’m short when I’m old. What am I?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

Count the number of times the letter "F" appears in the following paragraph:

FAY FRIED FIFTY POUNDS OF
SALTED FISH AND THREE POUNDS
OF DRY FENNEL FOR DINNER FOR
FORTY MEMBERS OF HER FATHER'S FAMILY.

I came first on earth but second on the heaven.
I also came twice in a week but found just once in a year.
I stay away from months but you can find me in February.

What am I?

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?

If an electric train is travelling south, then which way is the smoke going?

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?