Which of the following can be used as rocket propellant?

Which of the following pairs is/are correct?

$1$. Brine - Sodium chloride solution

$2$. Carbogen - mixture of $1\% C{O}_2$ and $O_2$

$3$. Laughing gas - Nitrous Oxide

Select the correct answer using the codes given below:

Consider the following pairs:

Commonly used materials- unwanted or controversial chemicals likely to be found in them

$1$. Lipstick- Lead

$2$. Soft drinks- Brominated vegetable oils

$3$. Chinese fast food- Monosodium glutamate

Which of the pairs given above is/are correctly matched?