Multiple choice

Match the entries in column I with that in column II and select the correct answer.

Column I
Column II
P. Phosgene 1. ClCH2CH2SCH2CH2Cl
Q. Tear gas 2. N2O
R. Mustard gas 3. COCl2
S. Laughing gas 4. CCl3NO2

  1. P - 1; Q - 2; R - 3; S - 4

  2. P - 2; Q - 3; R - 1; S - 4

  3. P - 3; Q - 4; R - 1; S - 2

  4. P - 3; Q - 2; R - 1; S - 4

  5. P - 4; Q - 3; R - 2; S - 1
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Phosgene is the chemical compound with the formula COCl2. Nitrotrichloromethane (CCl3NO2) is a colourless insoluble toxic lachrymatory liquid used as a pesticide and a tear gas. Mustard gas is the common name given to 1,1-thiobis(2-chloroethane), ClCH2CH2SCH2CH2Cl. Nitrous oxide, commonly known as laughing gas, is a chemical compound with the formula N2O.

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