EASY
DRDO MTS Tier - II
IMPORTANT
Earn 100
Salts of which of the following elements provide colours to fireworks
50% studentsanswered this correctly
Important Questions on Chemistry
EASY
DRDO MTS Tier - II
IMPORTANT
MEDIUM
DRDO MTS Tier - II
IMPORTANT
Match the following:
| Drugs/Chemicals | Their uses |
| A. Atropine | Local anaesthesia |
| B. Ether | Heart trouble |
| C. Nitroglycerine | Dilation of pupils |
| D. Pyrethrin | Mosquito control |
EASY
DRDO MTS Tier - II
IMPORTANT
Match the following:
| A. Silver Bromide | Etching of glass |
| B. Hydrogen peroxide | Purification of air |
| C. Ozone | Bleaching agent |
| D. Hydrofluoric acid | Photography |
MEDIUM
DRDO MTS Tier - II
IMPORTANT
Match the following:
| A. Chile Saltpetre | Mercury |
| B. Fluorspar | Zinc |
| C. Calamine | Sodium |
| D. Cinnabar | Calcium |
MEDIUM
DRDO MTS Tier - II
IMPORTANT
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 |
MEDIUM
DRDO MTS Tier - II
IMPORTANT
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.
EASY
DRDO MTS Tier - II
IMPORTANT
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
EASY
DRDO MTS Tier - II
IMPORTANT
Give the chronological order of the birth of the following scientists :
1. John Dalton 2. Linus Pauling 3. Dmitri Mendeleev 4. Ptolemy
