1. Which of the following properties prove that cathode rays are material in nature ?

2. Paramagnetic behavior of substance is measured by a balance called ?

3. Butyl chloride gives possible isomers ?

4. Metallic crystals are soluble in ?

5. Purines and pyrimidines are ?

6. Which of the following solids show anisotropy ?

7. In solids the temperature is the measure of ?

8. Fruit juices and fizzy drinks such as lemonade are often sold in aluminium cans. What is the most important reason aluminium is a suitable metal ?

9. Which of the following element doesn't show allotropy ?

10. All the transition elements show ?