By -
Chemistry Paper                   Total Marks (65)

SECTION _A                                         1each

1.Define Tetrahedral Void.

2.Colloids show...... motion.

3. Alcohols have:

4.Primary amines react with HNO² to give primary alcohol                              (True/False)

5.Give the IUPAC name of K³(Fe(CN)⁶].

6. Which of the following Vitamins  is fat soluble?
1. Vitamin B complex
2.Vitamin D
3.Vitamin A
4.Vitamin E

7.Ketones have .

8.What is body centred cubic?

9. Silver mirror is a test for .

1.Aldehydes
2.Thioalcohols
3.Acids
4.Ethers

10. The disaccharide present in milk is.
1. Sucrose 
2.Maltose 
3.Lactose 
4.Cellobiose.


SECTION_B                                              2each
                                      
Q1. State Kohlrausch's law.

Q2.Discuss the effect of concentration on rate of reaction.

Q3. What are inner transition elements.

Q4. Define co-ordination sphere

Q5.Give two chemical reactions of Haloalkanes.

SECTION _C                                            3each

Q6. Give two harmful effects of Feron.

Q7. What are Transition Metals

Q8. Explain Frenkel defect in ionic solids.

Q9. Define Gold number .

Q10. What is Lanthanide Contraction.

Q11.What are Vitamins.

Q12 .What are Polymers.

Q13. What are Antibiotics.

SECTION_D                                               5each

Describe the following reactions .
1. Aldol  cnodensation.
2.Cannizzaro reaction.
3. Rosenmuds reaction.

Q2. Define Osmotic Pressure .How is it determined by Berkeley-Hartely method?

Q3.Discuss the oxidation states of group 16 elements ?

Q4. Show how each of the following compounds  can be converted into benzoic acid? 

1. Ethyl benzene 
2.Acetophenone 
3. Bromobenzene

Comments

Post a Comment

Popular posts from this blog

Reproduction class 12th /Importance of reproduction and basic features of reproduction .NEET/BIOLOGY CLASS 12th CBSE/NCERT 2024_2025 Important topics.

By -
Reproduction: It is a biological process in which an organism produces number of individuals or offsprings of  similar type. IMPORTANCE OF REPRODUCTION: 1) Continvity of species means group of individuals which are similar in morphology (external features) functions, behavior but they can reproduce sucessfully in natural condition. 2) It maintaines chromosome number. 3) It helps in replacement of organisms. BASIC FEATURES OF REPRODUCTION: Before reproduction these features are important. 1) Replication of DNA molecule means forming two or duplicate DNA copies. 2)Formation of RNA molecule, proteins, cells, cell organelles and other biochemicals. 3) Cell division [Mitosis_asexual/Meiosis_sexual]. 4) It helps in formation of separate reproductive units (Male/Female). 5) Formation of offsprings is due to combination of reproductive units. CELL DIVISION: It is the process by which a parent cell divides into two or more daughter cells .On the basis of cell division are two types of cell...
Read more

Reproduction

By -
Reproduction. It is a biological process  in which an organism produces number of individuals or offsprings of similar type. Importance of reproduction. 1 . Continuity of species [means group of  individuals which are similar in morphology (external features) functions, behavior but they can reproduce sucessfully in natural condition. 2.It maintains Chromosome number. 3. It helps in existence of life. 4.It helps in replacement of organisms. Basic feature of reproduction. Before reproduction these features are important . 1. Replication of DNA molecule means forming two or duplicate DNA copies . 2. Formation of RNA molecule,proteins ,cells , cell organelles and other biochemicals. 3.Cell division [Mitosis -asexual /Meiosis sexual.] 4. It helps in formation of separate reproductive units (Male/Female). 5. Formation of offsprings is due to combination of reproductive units. Cell Division . It is the process by which a parent cell divides into two or more daughter cells . On the b...
Read more

Why NaCl give s a white precipitate with AgNO³ solution but CCl⁴ does not?

By -
Q1.Why NaCl give s a white precipitate with AgNO³ solution but CCl⁴ does not? Ans. NaCl is an  ionic conpound and hence gives Cl‐ions in the solution which combine with Ag+ ions given by AgNO³ to fom a white precipitate of AgCl but CCl⁴ is a covalent compound and does not give Cl‐ions . Q2.Why reaction between NaCl and AgNO³  is very fast but reaction between H² and Cl² is slow? Ans. NaCl and AgNO³ are ionic compounds, In solution, NaCl gives Na+ and Cl_ ions and AgNO³, gives Ag+ and NO‐³ions. The oppositely charged Ag+and Cl+ ions combine immediately. The reaction betwecn H2 and Cl2 involves breaking of covalent bonds which requires energy.
Read more