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Class 11 Chemistry Practice Test: p-Block Elements - Important Trends and Anomalous Properties of Boron
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The anomalous properties of boron are its high melting and boiling points which go as high as 2076 degrees and 3927 degrees respectively. Unlike all the other elements of the group, boron is non-metal and shows a covalency up to 4. Boron is a very hard element and is present in crystalline and amorphous allotropes.

Class 11 Chemistry Practice Test: p-Block Elements - Important Trends and Anomalous Properties of Boron
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15 Questions

1. Boron and silicon form covalent and volatile halides.
2. Group 13 hydrides are formed directly.
3. Which of the following compound is formed when aluminium reacts with an alkali?
4. Boron shows a diagonal relationship with ____________
5. Do Boron and silicon react with electropositive metals?
6. Which of the following element has the highest melting point?
7. Which of the following is the correct reason for the anomalous behaviour of Boron?
8. Which of the following property is not a similarity between Boron and silicon?
9. Which of the following elements is more reactive with air?
10. Which of the following is a colourless gas?
11. Boron and silicon form covalent and volatile halides.
12. Group 13 hydrides are formed directly.
13. ____________ and Boron are same in case when reacted with concentrated nitric acid.
14. All the oxides and hydroxides of Boron family are ____________ in nature.
15. Which of the following is a colourless gas?

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