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SUMMATIVE ASSESSMENT – II, 2014 Class – X, SAMPLE PAPER
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Find CBSE class 10th Guess paper for the for 2014 board examination. Question has been framed as per the analysis and facts that came from the previous year question papers
Find CBSE class 10th Science Sample paper for the second term examination. Question has been framed as per the syllabus covered in the second term examination
Cloning is the process of making a genetically identical organism through nonsexual means It has been used for many years to produce plants (even growing a plant from a cutting is a type of cloning). Animal cloning has been the subject of scientific experiments for years, but garnered little attention until the birth of the first cloned mammal in 1997, a sheep named Dolly. Since Dolly, several scientists have cloned other animals, including cows and mice. The recent success in cloning animals has sparked fierce debates among scientists, politicians and the general public about the use and morality of cloning plants, animals and possibly humans.
CBSE - Class 6 - Science Chapter :Fun with Magnets Multiple choice Questions (1) When a magnet is suspended freely it always aligns itself in -------- direction? a) North b) N-S c) N-W d) N-E (2) ---------- is the only natural magnet. a) Magnetite b) Ebonite c) Cobalt d) Nickel (3) Which of the following cannot be used to make a magnet? a) Cobalt b) Iron c) Ebonite d) Steel (4) Which of the following is not a non-magnetic substance? a) Glass ...
Sadhana Devi Vidyapith,Samastipur ASSIGNMENT – 1, SESSION – 2012-2013 CLASS – X, SUBJECT – CHEMISTRY By JSUNIL CHAPTER- CHEMICAL REACTIONS AND EQUATIONS 1 mark questions:- 1. What change do you observe, when magnesium ribbon is burnt in air? 2. Give reason - Magnesium ribbon is to be cleaned before burning in air. 3. Define the term word equation? 4. Name the term used for the physical state of the solution of the reactant or product dissolved in water. 5. Write an example of decomposition reaction. 6. What is meant by thermal decomposition? 7. Name the chemical reaction in which heat is absorbed. 8. Name the gas which burns with a pop sound. 9. Name the type of reaction in which two or more substances combine to form a new single product. 10. What is Redox reaction? 2 and 3 marks questions Q.1 Express the following reactions in the form of chemical equations and balance them. Make an equation as informative as you can. Also mention the type of reaction :- (a) When...
Q Name the cells having branches structure. Ans Nerve Cell. Q Why cells could not be observed before seventeenth century? Ans Cells could not be observed before seventeenth century because till that time microscope was not invented. Q Why plant cell have cell wall? Ans Plant cells need protection against variations in temperature, high wind speed, atmospheric moisture, etc. They are exposed to these variations because they cannot move. That's why they have cell wall. Q Which organism has the smallest cell? Ans Mycoplasmas, a bacteria has the smallest cell of the size of 0.1 micron i.e. ten thousandth part of a mill metre. ' Q Which is the largest cell visible by unaided eye? Ans Ostrich egg has the largest visible cell by unaided eye. Q Name the four elements, which fonn major part of protoplasm. Ans These are carbon, hydrogen, oxygen and nitrogen. Q Give two examples of prokaryotes. Ans Bacteria and blue green algae. Q Name the la...
1. What is plasma membrane? What are their functions? Ans: Plasma membrane also called as cell membrane, is the outer covering of a cell that separates the cell contents (protoplasm) from the surrounding medium. It is made up of proteins and lipids. It gives form (shape and size) to the cell It maintains the individuality of the cell (i.e. seperates cells) It keeps the cell contents in place 2. What are cell organelles ? Ans: The certain specific living parts of a cell with a definite function are celled Cell organelles. All cell are found to have same organelles and together these constitute to the basic unit of life. 3. What is cellulose and its functions? Ans: Cellulose is the main component of a plant cell wall. It is responsible for giving structural shape to the cell and also to protect the protoplasm. 4. What is a Prokaryotic cell? Give an Example. Ans: The cells that do not hav...
Cloning is the process of making a genetically identical organism through nonsexual means
ReplyDeleteIt has been used for many years to produce plants (even growing a plant from a cutting is a type of cloning).
Animal cloning has been the subject of scientific experiments for years, but garnered little attention until the birth of the first cloned mammal in 1997, a sheep named Dolly.
Since Dolly, several scientists have cloned other animals, including cows and mice.
The recent success in cloning animals has sparked fierce debates among scientists, politicians and the general public about the use and morality of cloning plants, animals and possibly humans.