| 1 |
A strange bitter smell noticed near photo copier machine is of. |
- A. H<sub>2</sub>S
- B. SO<sub>2</sub>
- C. O<sub>2</sub>
- D. O<sub>3</sub>
|
| 2 |
____________ use for ripening of fruits. |
- A. Ethene
- B. Ethane
- C. Ethyne
- D. Propane
|
| 3 |
In a chemical reaction, the substance that combine are called. |
- A. Reactant
- B. Products
- C. Mass
- D. Material
|
| 4 |
The substances formed during the chemical reaction are called. |
- A. Product
- B. Reactants
- C. Radicals
- D. Element
|
| 5 |
Which compound do not produce in the halogenation of methane. |
- A. Chloroform
- B. Carbon tetrachloride
- C. Carbon black
- D. Chloromethane
|
| 6 |
The reactions in which products can recombine to form reactants is called. |
- A. Irreversible reactions
- B. Reversible reactions
- C. Direct reactions
- D. Indirect reactions
|
| 7 |
General formula of alkynes is: |
- A. C<sub>n</sub>H<sub>n</sub>
- B. C<sub>n</sub>H<sub>2n</sub>
- C. C<sub>n</sub>H<sub>2n+2</sub>
- D. C<sub>n</sub>H<sub>2n-2</sub>
|
| 8 |
Raw materials used in Solvay's process. |
- A. Brine
- B. Lime stone
- C. Ammonia gas
- D. All
|
| 9 |
Which helps in lowering of cholesterol level? |
- A. Vitamin
- B. Fiber
- C. Carbohydratres
- D. All of them
|
| 10 |
Halogenation of alkanes in the presence of diffused sunlight takes place. |
- A. Suddenly, only in one step
- B. Slowly in one step
- C. In a series of step
- D. Fastly in two steps
|
