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

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

Can you write down eight eights so that they add up to one thousand?

I am a five-letter word and people eat me. If you remove the first letter I become an energy form. If you remove the first two letters, I am needed to live. Scramble the last three letters and I am a drink. What word am I?

You have a roll of cloth 1km long. You have a machine which cuts this roll into pieces of 10-meter-long cloth.

How long would it take for the machine to cut the roll if each cut took 4 secs?

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

In the addition below, all digits have been replaced by letters. Equal letters represent equal digits and different letters represent different digits.
ABCABA
BBDCAA
ABEABB
ABDBAA
------- +
AAFGBDH
What does the complete addition look like in digits?

Christina is older than Kareena and Karishma. Katrina is older than Karishma and younger than Kareena. If Kareena has a brother named John, who is older than Christina, who's the youngest?

Identify the 10 differences between the two given pictures.

Can you identify the Oscar-winning movie from the rebus below?