physics question honors physics?

Question. Action of heat on blue vitriol is a physical as well as chemical change. Justify..

Now the question arises why and how the offsprings appear similar to the parents ? What is the connection between the two ? In the chapter on reproduction, we have seen that all sexually reproducing organisms produce gametes by meiosis having half the number of chromosomes. Each..

^gfr unit ell of rock salt crystal is (1) 2 (2) 4 (3) 6 (4) 8 60. Which of the following is instantaneous? (1) neutralization of an acid by a base (2) displacement of hydrogen from a dilute acid by a metal (3) oxidation of hydrogen sulphide by sulphurdioxide (4) all of 1,2, 3 Answers Questionh..

Short answer questions : (1 mark or 2 marks) 1. What is a physical quantity ? 2. What is a unit ? 3. Mention the requisites of a unit. 4. What are fundamental units ? 5. What are base quantities in mechanics ? 6. What are derived units ? 7. Distinguish between fundamenta..

SECTION-A (Essay type questions. Each question - 8 marks) NITROBENZENE 1.a. Write the preparation of nitrobenzene, b. Explain the properties of nitrobenzene, c. Write any two uses of nitrobenzene. 2.a. How is benzene converted into nitrobenzene ? b. Explain the reduc..

SECTION - A (Essay type questions. Each question - 8 marks) CHLOROFORM 1. Write any three methods of preparation and three important properties of chloroform. Write the respective equations. Give any two uses of chlorform. 2.a. How is chloroform obtained from..

? Give their function 2. Write a note on natural killer cells. 3. What are interferons? How are they produced? 4. Give the schematic representation of the stages of inflammation III Five marks questions 1. Give an account of physical barriers. 2. Give an account of chemical barr..

;A chimpanzee swinging on a swing in a sitting position suddenly stands up. What happens to the period of rotation ? (CET 2000) 21. A dancer on ice spins faster when she folds her arms. Why ? 22. A solid sphere is rotating in free space. If the radius of the sphere is increased by keeping mass same..

SECTION-A (Essay type questions. Each question - 8 marks) ORGANIC COMPOUNDS CONTAINING OXYGEN IN THE FUNCTIONAL GROUP - ALCOHOLS (ETHYL ALCOHOL) 1. Write three preparations , three properties and two uses of ethyl alcohol ? 2.a. Write the preparation of ..