Question Paper Model - Chemistry | Science Class 11

Model Question
Question Paper Model - Chemistry
For: Science Class 11
Exam Oriented Model Question
Time : 3 hrs

Full Marks : 75

Pass Marks : 27

Group ‘A’
Attempt any Fifteen question : 15 X 2 = 30

Q.1. State Law of reciprocal proportion.

Q.2. The oxide of an element contains 67.67 % of oxygen and V.D. of its volatile chloride is 79

Three Atomic Model - Dalton, Thomson And Rutherford | Chemistry Class 11

Notes | Chemistry
Three Atomic Model - Dalton, Thomson, Rutherford
Grade: XI

Dalton’s Atomic Theory 

a) Elements are made of extremely small particles called “atoms”. Atoms of a particular element are identical; different types of atoms have different properties. Each chemical compound is unique and is made of specific atoms put in a specific way. Chemical reactions are the shuffling of atoms; new compounds are made from the same atoms of the original compound.

Bohr's Atomic Model, Its Merits and Limitation - Chemistry Class 11

Chemistry Notes | Science
Bohr's Atomic Model and Its Advantages and Limitation
Class: 11

In 1913 German Scientist Neils Bohr proposed the model of an atom which was based upon the plank’s quantum theory of radiation. The basic postulates of Bohr’s theory are:

1. An atom consists of a small, heavy, positively charged nucleus in the centre and electron revolves around it in a circular orbit. 

2. The energy of the electron in a particular energy level remains constant i.e. electron neither loss nor gain energy during revolution in a certain energy level.

Rutherford's α-rays Scattering Experiment | Chemistry Class 11

Notes | Chemistry
Rutherford's α-rays  Scattering Experiment - Observation, Nuclear Model of Atom and Limitation.
Class: 11

Rutherford’s model of atom is based on the α-rays scattering experiment which was performed by Ernest Rutherford and his co-workers in 1910 AD. In this experiment α-rays emitted from radioactive substance where bombarded on a thin gold foil around which a movable screen coated with Zns flashes were produced which could be easily observed. By examining the Zns screen in different position, it was possible to determine the proportion of α-rays scattering away from the Gold foil.

Boyle's Law - Graphical Representation and Application | Chemistry Class 11

Chemistry | Notes
Boyle’s Law with Graphical Representation and Its Application

Class: 11

The Robert Boyle (1662) was the founder of this law. He states that temperature remaining constant in a volume of given mass is of gas is inversely proportional to pressure exerted by it. 

Old Question Paper 2070 - Chemistry Class 11 | Download

Question Paper | Chemistry
Old Question Paper of Chemistry
Class 11
Year : 2070 B.S. (2013)

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