Class IX

Popular Post

Class X CH-3 PAIR OF LINEAR EQUATION IN TWO VARIABLES SA-1

Image
Q.1. Draw the graph of 2y = 4x – 6      2x = y+ 3 And determine whether this system of linear equation has a unique solution of not. Q.2. solve the following system of linear equation: 5x – 6y + 30 = 0                      5x + 4y – 20 =0 Find the vertices of the triangle formed by the above two lines and x-axis. Q.3. solve graphically the system of linear equation: 4x – 3y + 4 = 0                        4x + 3y – 20 = 0 Find the area of the region bounded by these lines and x-axis. Q.4. find value of k for which the systems of equation have a unique solution: X – ky = 2                   3x + 2y = -5 Q.5. find value of k for which the systems of e...
Read more

VI (6th) Fun with Magnets MCQ’s

Image
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    ...
Read more

New class 9 Biology Board solved Questions

Image
9th Biology Board solved Questions: Ch-13. Why do we fall ill?  Q. What is an antibiotic? Give its one example Ans: Antibiotic is a chemical substance that kill bacteria, secreted by microorganisms which can kill the pathogens Example – Penicillin Q. (i) Which disease is more harmful : Acute or Chronic disease ? Why? (ii) Why are we advised to take bland and nourishing food when we are sick? Ans: (i) Chronic disease Because chronic diseases have drastic long term effects on people’s health as compared to acute disease (ii) (a) Such food does not contain oil or fat and spices so it is digested easily (b) It provides sufficient energy for recovery after the disease (c) It provides adequate amount of nutrients required for regeneration of cells and tissues. Q. (i) How atmospheric inert nitrogen gas is converted into usable nitrogenous form for the various life forms? (ii) Draw a labelled diagram to show nitrogen cycle in nature Ans: (i) (i) By the help of free living nitrogen f...
Read more

Diversity in Living Organisms class 9 solved Questions for CBSE exam

Image
Trend Setter Questions with Solutions : Diversity in Living Organisms  more than 150 solved Questions  One Mark Questions: 1) What is biological classification ? Ans: Grouping of organisms based on similarities & dissimilarities is called biological classification. 2) What is Taxonomy ? Ans: The systematic study of identification classification and naming of oraganisms is called taxonomy. 3) Who made 1st attempt for scientific basis of classification ? Ans : Aristotle. 4) On what morphological criteria Aristotle classified the plants ? Ans : Based on the morphological nature of the stem. 5) Based on the nature of the steam name the types of plants classified by Aristotle. Ans: Herbs, Shrubs & Trees. 6) Name the 2 kingdoms of classification ? Ans: (1) Plantae & Metaphyta (2) Animatia Metazoa 7) What are prokaryotas ? Ans: The organisms which do not have well organized nucleus in their cell are called prokaryotes. OR Organisms co...
Read more

8th Class Cell structure and function solved questions(Biology)

Image
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...
Read more