| 1 |
In shoe polished, which chemical is used. |
- A. Ethanol
- B. Methanol
- C. Carbon black
- D. Formaldehyde
|
| 2 |
Volatility of hydrocarbons deceases with: |
- A. decrease of molecular mass
- B. increase of molecular mass
- C. increase of double or triple bonds
- D. decrease of triple bonds
|
| 3 |
Which gas creates suffocation and causes death? |
- A. CO
- B. CO<sub>2</sub>
- C. SO<sub>3</sub>
- D. SO<sub>2</sub>
|
| 4 |
Substitution reaction is the characteristics of. |
- A. Alkanes
- B. Alkenes
- C. Alkynes
- D. None of these
|
| 5 |
Which of one of the following is used as as fumigant: |
- A. Ethyl alcohol
- B. ethylene oxide
- C. ethylene glycol
- D. diethyl ether
|
| 6 |
Dehydrohalogenation takes place in the presence of . |
- A. NaOH aqueous
- B. Alcoholic KOH
- C. Aqeous KOH
- D. Alcoholic NaOH
|
| 7 |
The general formula of alkynes is |
- A. C<sub>n </sub>H<sub>2n</sub>
- B. C<sub>n </sub>H<sub>2n+2</sub>
- C. C<sub>n </sub>H<sub>2n-2</sub>
- D. C<sub>n</sub> H<sub>2n+1</sub>
|
| 8 |
Which one of these is used as anaesthesia? |
- A. carbon black
- B. Mehtane
- C. Ethane
- D. Chloroform
|
| 9 |
Which of the following gas is used in warfare? |
- A. Methane
- B. Ethane gas
- C. Mustard gas
- D. None of these
|
| 10 |
Which one of these hydrocarbon molecules would have no effect on an aqueous solution of bromine? |
- A. CH<sub>4</sub>
- B. C<sub>10</sub>H<sub>20</sub>
- C. C<sub>2</sub>H<sub>4</sub>
- D. C<sub>2</sub>H<sub>2</sub>
|