Advertisements
Advertisements
प्रश्न
Which technique can be used to detect and identify traces of poison present in the stomach wash of a person ?
Advertisements
उत्तर
Chromatography is a technique that can be used to detect and identify traces of poison in the stomach of a person.
APPEARS IN
संबंधित प्रश्न
Fill in the blank
Liquids have a definite ______
Name a metal which is soft and a non-metal which is hard.
Name a liquid which can be classified as a pure substance and conducts electricity.
Classify the following into elements and compounds :
- H2O
- He
- Cl2
- CO
- Co
What are the two types of pure substances? Give one example of each type.
Name a metal which has no fixed shape.
What are (i) metals (ii) non-metals, and (iii) metalloids ? Give two examples each of metals, non-metals and metalloids.
Which of the following is not an element ?
Which of the following are compounds ?
- CO
- No
- NO
- Co
State whether colloidal solutions are homogeneous or heterogeneous.
Calculate the concentration of a solution which contains 2.5 g of salt dissolved in 50 g of water.
What is the concentration of a solution which contains 16 g of urea in 120 g of solution ?
Fill in the following blank :
A colloid is a ..............mixture and its components can be separated by the technique known as ...............
Explain what happens when a beam of light is passed through a colloidal solution.
Differentiate between a saturated and an unsaturated solution. How will you test whether a given solution is saturated or not ?
What is the difference between colloids and suspensions ?
How is scrap iron separated from a heap of waste materials in factories?
Asmita went to buy an earthen pot. There she saw many things kept for sale.
How did she identify what she needed?
Examples of foam are ______.
Give an example of a molecule.
