Match the following :
Fuel Gases Major Constituents
A. CNG 1. Carbon monoxide, Hydrogen
B. Coal Gas 2. Butane, Propane
C. LPG 3. Methane, Ethane
D. Water Gas 4. Hydrogen, Methane, Carbon monoxide
Important Questions on Chemistry
Match the following:
| Drugs/Chemicals | Their uses |
| A. Atropine | Local anaesthesia |
| B. Ether | Heart trouble |
| C. Nitroglycerine | Dilation of pupils |
| D. Pyrethrin | Mosquito control |
Match the following:
| A. Silver Bromide | Etching of glass |
| B. Hydrogen peroxide | Purification of air |
| C. Ozone | Bleaching agent |
| D. Hydrofluoric acid | Photography |
Match the following:
| A. Chile Saltpetre | Mercury |
| B. Fluorspar | Zinc |
| C. Calamine | Sodium |
| D. Cinnabar | Calcium |
Match the following:
| A. Hydrogen | The most abundant element on earth |
| B. Oxygen | The most abundant element in the universe |
| C. Nitrogen | Constituents of plant and animal proteins |
| D. Chlorine | Used as a bleaching agent |
In the process of cleaning, soap functions by
1. Changing hard water into soft water.
2. Reducing oily and greasy dirt into colloidal particles.
3. Converting the dirt to lather and ·water soluble particles.
4. Increasing the cleansing properties of water.
The number of carbon atoms in the following compounds varyWhat is the increasing order in which they are present in the compounds
1. Butane 2. Methane 3. Ethane 4. Decane
