CBSE Class 9 and Class 11 to have PSA test from SA-II onwards

CBSE has asked CBSE affiliated schools to conduct a MCQ based exam called Problem Solving Assessment (CBSE-PSA) for class IX and XI from second term (SA-2) w.e.f. from January-Feburary 2013.
Later the test will be conducted for class X also.

Its score will be added in FA-4 which is 10% of total assessments of Class IX and class XI students will get a certificate. 

CBSE Class 7 Science - CH14 - Electric Current and its Effects

Electric Current and its Effects

Why CFL is better than electric bulb?

NCERT Solutions and other Q & A

Q1: Draw in your notebook the symbols to represent the following components of electrical circuits: connecting wires, switch in the ‘OFF’ position, bulb, cell, switch in the ‘ON’ position, and battery.

Answer:

CBSE - Class 9 - Maths - Lines and Angles (Ex. 6.1)

NCERT Excercise 6.1

Q1: In Fig. 6.13, lines AB and CD intersect at O. If ∠AOC + ∠BOE = 70° and ∠BOD = 40°, find ∠BOE and reflex ∠COE.

CBSE - Class 10- Science Proficiency Test Paper (2012) - Set-A

Class 10 - Science Proficiency Test Paper 2012 (Set-A)

(See Answer key at the end.)

CBSE - Class 10 - Proficiency Test Paper- Maths (Set-A)

Class 10 - Maths Proficiency Test Paper (Set-A)

(See Answer key at the end.)

CBSE Class 9 - Science - CH9 - Force and Laws of Motion (worksheet)

Isaac Newton

Force and Laws of Motion

Worksheet

Fill in the blanks

1. The study of motion of a body under the action of a force is called ______.

2. (Impulse/Force/Pressure) ______ is a push or pull acting upon an object.

3. The natural tendency of objects to resist a change in their state of rest or of uniform motion is called ______.

CBSE Class 9 - Science - CH6 - Tissues (Worksheet)

Tissues

(Worksheet)

Cardiac Muscle
credits:  Ijsbrand Kramer , University of Bordeaux

 

Fill in the blanks

1. ___________  is the process by which unspecialised structures become modified and specialised for performing specific functions.

2. Differentiation results in ________ (division/ summation/integration) of labour.

3. The study of the structure of tissues and organs is known as ______ .

4. Based on ability to divide, plant tissues may be classified as ________ and _____ tissues.