Sunday, May 21, 2017

CBSE Class 11 Chemistry -Syllabus (2017-18) (#cbsenotes)

Chemistry -Syllabus (2017-18)


CBSE Class 11 Chemistry

CBSE Class 11 Chemistry - -Syllabus (2017-18) (#cbsenotes)

Here presents the prescribed syllabus for Class 11 Chemistry for the curriculum 2017-18.


CBSE Class 10 Chemistry - CH2 Acids and Bases - Very Short Questions and Answers (#cbsenotes)

Acids and Bases  

CBSE Class 10 Chemistry - CH2 Acids and Bases - Very Short Questions and Answers (#cbsenotes)

Very Short Questions and Answers
Class 10 Science - Chemistry


Q1: What is an acid?

Answer: Acid is a compound which yields hydrogen ions (H⁺) or Hydronium (H₃O⁺) ions , when dissolved in water.


Q2: What is the pH value of acids?

Answer: Less than 7 (i.e. 0 to < 7)


Q3: What is the taste of acids?

Answer: Sour


Q4: What happens to blue litmus paper when it comes in contact with acid solution?

Answer: It turns into red.


Q5: On the basis of origin, how acids are classified as?

Answer: Organic acids and Mineral acids.

Saturday, May 20, 2017

CBSE Class 10/9/8 - English - Reading Comprehension (Set-8) (#cbsenotes)

Reading Comprehension

CBSE Class 10/9/8 - English - Reading Comprehension (#cbsenotes)

(NTSE 2015) Read the comprehension passage and answer the following questions:

Marie curie was one of the most accomplished scientists in history. Together with her husband, Pierre, she discovered radium, and element widely used for treating cancer, and studied uranium and other radioactive substances. Pierre and Marie’s amicable collaboration later helped to unlock the secrets of the atom.

Marie was born in 1867 in Warsaw, Poland, where her father was a professor of Physics. At an early age, she displayed a brilliant mind and blithe personality. Her great exuberance for learning prompted her to continue with her studies after high school. She became disgruntled, however, when she learned that the university in Warsaw was closed to women, Determined to receive a higher education, she defiantly left Poland and in 1891 entered the Sorbonne, a French university, where she earned her master’s degree and doctorate in Physics.

Friday, May 19, 2017

CBSE Class 12 Chemistry - Syllabus (2017-18) (#cbsenotes)

Chemistry -Syllabus (2017-18)


CBSE Class 12 Chemistry

CBSE Class 12 Chemistry - -Syllabus (2017-18) (#cbsenotes)

Here presents the prescribed syllabus for Class 12 Chemistry for the curriculum 2017-18.


Thursday, May 18, 2017

CBSE Class 8/10 - Metals vs Non-Metals (Comparison) (#cbseNotes)

Metals vs Non-Metals



Physical Properties Comparison


Property Metals Non Metals
Physical State Most metals are solids at room temperature except mercury which is a liquid. Gallium and Cesium also changes into liquid at slightly above room temperature. Non Metals exist in all states. Eleven are gases, bromine is liquid while others are solids.
Melting and Boiling Point Generally have high melting and boiling points. (Exceptions are Gallium, Mercury, Sodium and Potassium.) Generally they have low melting and boiling points. Exceptions are: Carbon, Boron and Silicon.
Density They have high density except Sodium and potassium. Low denisty (Diamond is an exception.)
Lusture Metals shine and are lustrous. Non-metalls appear dull. (Exceptions are Diamond, graphite and iodine.)

Wednesday, May 17, 2017

CBSE Class 9 English (Communicative) - Syllabus (2017-18) (#cbseNotes)

English (Comm) -Syllabus (2017-18)


CBSE Class 9 English (Communicative)

CBSE Class 9 English (Communicative) - Syllabus (2017-18) (#cbseNotes)

Here presents the prescribed syllabus for Class 9 English (Communicative) for the curriculum 2017-18.


CBSE Class 6 - Science - CH 3 - Fibre To Fabric - Worksheet (#cbseNotes)

Fibre To Fabric 

Class 6 - Science - Chapter 3
CBSE Class 6 - Science - CH 3 - Fibre To Fabric - Worksheet (#cbseNotes)

Worksheet


Fill in the blanks


1. _______ and _________ are animal fibres.


2. Long thin strands found in plants and animals are called ________.


3. _______ is used for packaging material, sacks, bags and ropes.


4. ________ is an example of dietry fibre.