X Chemistry - Carbon and Its Compounds for CBSE

AnonymousNovember 20, 2012 at 3:59 AM
I have been visiting various blogs for online study material for class 10th. I have found your blog to be quite useful. Keep updating your blog with valuable information... Regards
ReplyDelete
Replies

Add comment

10th similar triangle guess questions

June 11, 2012

CBSE TEST PAPER MATHEMATICS (Class-10) SIMILAR TRIANGLE CBSE TEST PAPER MATHEMATICS (Class-10) SIMILAR TRIANGLE Chapter : Triangles 1. In Δ PQR, given that S is a point on PQ such that ST II QR and PS/SQ=3/5 If PR = 5.6 cm, then find PT. 2. In Δ ABC, AE is the external bisector of <A, meeting BC produced at E. If AB = 10 cm, AC = 6 cm and BC = 12 cm, then find CE. 3. P and Q are points on sides AB and AC respectively, of ΔABC. If AP = 3 cm,PB = 6 cm, AQ = 5 cm and QC = 10 cm, show that BC = 3 PQ. 4. The image of a tree on the film of a camera is of length 35 mm, the distance from the lens to the film is 42 mm and the distance from the lens to the tree is 6 m. How tall is the portion of the tree being photographed? 5. D is the midpoint of the side BC of Δ ABC. If P and Q are points on AB and on AC such that DP bisects <BDA and DQ bisects <ADC, then prove t...

CBSE NCERT IX-Physics for term-II Chapter: Sound key points

January 25, 2013

CBSE NCERT IX-Physics for term-II Chapter: Sound key points 1. Sound is a wave that is created by vibrating objects and propagated through a medium from one location to another. 2. A disturbance that travels through a medium, transporting energy from one location to another location is called wave. The medium is simply the material through which the disturbance is moving; it can be thought of as a series of interacting particles. 3. In our body Vocal cord is vibrating body that produce sound wave. 4. The sound wave is transported from one location to another by means of particle-to-particle interaction like air particles in air. 5. Air particles interact continuously throughout the entire medium that causes disturbance to its nearest neighbours till sound reach to listener. 6. A sound wave is a disturbance that is travel through a medium via the mechanism of particle-to-particle interaction. Hence sound wave is characterized as a mechanical wave....

Question Paper class 10 CBSE SA-1 for 2015

September 20, 2014

CBSE 2014 – 2015 Class 10 SA1 Question Papers are given below. (CBSE 2014 - 2015 Class 10 SA1 Question Papers – Science CBSE 2014 – 2015 Class 10 SA1 Question Papers – Social Science CBSE 2014 – 2015 Class 10 SA1 Question Papers – Maths CBSE 2014 – 2015 Class 10 SA1 Question Papers – Hindi CBSE 2014 – 2015 Class 10 SA1 Question Papers – English CBSE 2014 – 2015 Class 10 SA1 Question Papers – Sanskrit

New class 9 Biology Board solved Questions

March 02, 2014

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...

CBSE:10th Math :Chapter Triangles : Solved Concept builder theorems

June 11, 2012

If a line divides any two sides of a triangles proportionally then the line is parallel to the third side Statement: If a line divides any two sides of a triangles proportionally (in same ratio), then the line is parallel to the third side. Proof: We are given ABC AD / BD = AE / CE We have to prove: DE is parallel to BC Let DE's not parallel to BC then an another line DE' is parallel to BC. Now AD / BD = AE / CE [Given] And AD / BD = AE' / CE' [ Thales Theorem ] Therefore AE / CE = AE' / CE' i.e. AE / CE + 1 = AE' / CE' + 1 i.e. AE + CE / CE = AE' + CE' / CE' i.e. CE = CE' But this is not possible until E and E' is coincident. Thus, our assumption is wrong and DE is parallel to BC. X Triangles :Criteria for Similarity of Triangles Solved: 10th math Triangles Thales theorem 10th math Converse of Thales theorem Angle bisector theorem 10th math SAS similarity of triangle 10th SSS similarit...

Search This Blog

CBSE Pathshala