Ncert Solutions Chemistry Class 11th
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10.1. What are the common physical and chemical features of alkali metals?
10.1. What are the common physical and chemical features of alkali metals?
- Physical appearance: All the alkali metals are silvery white, soft and light metals.
- Density: Because of the large size, these elements have low density which increases down the group except for potassium which is lighter than sodium (most likely due to an unexpected increase in the atomic size.).
- The
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Answer: (i) 3H2? (g)+2MoO3? ? Mo2? O3? +3H2? O (l)
(ii) CO (g) + H2 (g)? CH3OH
(iii)C3H8 (g) + 3H2O (g)? 3CO + 7H2 (g)
(iv) Zn (s) + NaOH (aq)? Na2ZnO2 (s) + H2 (g)
Upvote What are the differences between old and modern periodic table?
The differences between old and modern periodic table are as follows:
| Mendeleev's Table (Old Periodic Table) | Modern Periodic Table (Long Form Table) |
| Arrangement of elements are done on atomics weights (mass) | Arrangement of elements are done on atomic number |
| Contains 66 elements | Contains 118 known elements |
| Noble Gases not mentioned in old periodic table because it was not discovered | Noble gases are included in Group 18 |
| Transistion elements were placed with other elements | Transition elements are placed in seperate block |
Upvote How can I download NCERT environmental chemistry short questions and answers?
NCERT Environmental Chemistry short questions and answers are provided in this artciles. These types of questions help in boosting the marks.
Upvote Is it necessary to prepare the Chapter 14 class 11 chemistry environmental chemistry notes?
Yes, Class 11 Chemistry Environmental Chemistry notes are benefical in quick revision. Environmental Chemistry notes must consist of detailed explanation of topics, formulas, diagrams and reactions.
Upvote Where can I get NCERT solutions for environmental chemistry class 11 with explanations?
With the help of subject experts at Shiksha we have provided the NCERT solutions for environmental chmistry class 11 with explanation through this article.
Upvote Whats is the benefit of Class 11 chemistry hydrocarbons short notes and questions?
Students can use the Class 11 Chemistry hydrocarbons shorts notes and question for quick resion and self assessment. After self assessment, it become easy to identify the weaker topics.
Upvote Is importat to practice Chapter 13 hydrocarbons class 11 chemistry solved exercises?
Yes, it is important to solve the Hydrocarbons ncert class 11 solved exercises for better understanding of topics. If the students faces any issue while solving the NCERT Class 11 Chemistry Hydrocarbons textbook exercises that means they must complete their conceptual knowledge.
Upvote Can you provide me NCERT solutions for class 11 hydrocarbons with diagrams?
Students can check the CBSE Class 11 Chemistry text book for NCERT solutions for class 11 hydrocarbons with diagrams. Students must practice the diagram solutions to master the questions.
Upvote What is the techniques of purification of organic compounds NCERT?
As per NCERT the purification of an organic compounds are done in three ways - sublimation, crystallization, and distillation. The selection of the technique is based on the properties of compound and present of impurities.
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