CBSE Class 9 - Physics - Gravitation and Flotation (Solved Numerical Problems) (#cbsenotes)(#eduvictors)

CBSE Class 9 - Physics -Gravitation and Flotation (Solved Numerical Problems)

Questions:

1) Find the total thrust acting on the bottom surface of a tank 4m long, 2m broad and 2m deep when fully filled with water. The density of water= 10³ kg/m³.

2) The gravitational force between two objects is 100N. How should the distance between the objects be changed so that force between them becomes 50N?

3) If the distance between two masses be increased by a factor of 6, by what factor would the mass of one of them have to be altered to maintain the same gravitational force? Would this be an increase or decrease in the mass?

4) The value of ‘g’ on earth’s surface is 9.8 m/s². Suppose the earth suddenly shrinks to one-third of its present size without losing any mass. What is the value of ‘g’ on the surface of shrunk earth?

5) Two bodies of mass 1kg and 100kg respectively are dropped simultaneously from same height 4.9m in a vacuum. Calculate and compare their final velocities just before hitting the ground and the time interval in which they will hit the ground.

6) The ratio of gravitational force on Neptune to the gravitational force on earth is 9:8. Ramesh weighs 792N on earth. Calculate his weight on Neptune.

CBSE Class 11 - Chemistry Sample Question Paper - (2018-19) (#cbsepapers)(#eduvictors)

CBSE Class 11 - Chemistry 
 Sample Question Paper - (2018-19)

Chemistry is that branch of science which deals with the composition, structure and properties of matter. Class 11 Chemistry syllabus broadly covers fundamental concepts of Chemistry. The syllabus provides logical sequencing of the ‘Units’ of the subject matter with proper placement of concepts with their linkages for better understanding.

Here follows the class 11 Half Year Chemistry sample question paper to assess your knowledge.

Class 11 - Chemistry - Ch 14 - Environmental Chemistry - Atmospheric Pollution - Concept Points (#cbsenotes)(#eduvictors)

Environmental Chemistry Atmospheric Pollution Concept Points

Environmental Chemistry: 
The branch of chemistry which deals with the study of various chemical changes and reactions occurring in environment is called Environmental chemistry. It includes our surroundings as air, water, soil, forest etc.


Environment constitutes air, water, soil, plants and atmosphere around us.

Environmental Pollution: 
Environmental pollution is the effect of undesirable changes in our surroundings that have harmful effects on plants, animals and human beings.

Pollutants: 
A substance which causes pollution is known as pollutant. Pollutants can be solid, liquid or gaseous substances, present in higher concentration. It can be produced due to human activities or natural happenings.


Atmospheric Pollution:
The atmosphere that surrounds the earth is not of the same thickness at different heights. Atmospheric pollution is generally studied as tropospheric and stratospheric pollution.

CBSE Introduces New passing criteria for CBSE Class 10 students For Examination 2019 (#cbsenews)(#eduvictors)

CBSE  Introduces New passing criteria for CBSE Class 10 students For Examination 2019

CBSE  Introduces New passing criteria for CBSE Class 10 students For Examination 2019

CBSE (read the recent notification here)  has introduced new passing criteria for class 10 students. All candidates who had appeared in the CBSE Class 10 exam last year (2017) were exempted from separate pass criteria in internal assessment and Board examinations.

CBSE Class 11 - Computer Science (C++) - Sample Question Paper - (2018-19)(#eduvictors)(#cbsepapers)

CBSE Class 11 - Computer Science  (C++)
 - Sample Question Paper - (2018-19)

Be it Science or Engineering, medical world or launching Space Shuttles, Study of Universe or global communications, Research and Development or Edutainment – the core ingredient is computer. 

Here are the learning objectives of Computer Science subject, introduced in class 11: 

1. To understand the problem statement 

2. To develop logic for problem solving 

3. To understand the concept of Object Oriented Methodology 

4. To implement Object Oriented Programming using C++ 

5. To understand the concept of working with Relational Database 

6. To understand the basic concept of algebra of logic 7. To understand and explore the world of communication and network

Here follows the class 11 Half Year Computer Science sample question paper to assess your knowledge.

Class 9 - Biology - Why do we fall ill? - Important Definitions (#cbsenotes)(#eduvictors)

Why do we fall ill? - Important Definitions

Health: 
A state of being well enough to function well physically, mentally and socially.

WHO defined health as ‘a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity’"

Disease:
Lack of feeling of ease or distress due to impairment of health or a condition of abnormal functioning or structural disorder.

Hygiene :
Condition and practices that help to maintain health and prevent the spread of diseases.


Symptoms:
A series of events occurring that often point to a disease or condition.

Signs:
Objective evidence of disease as identified by physicians or doctors.

Grading System in CBSE For 10th & 12th (#eduvictors)

Grading System in CBSE For 10th & 12th

For awarding the grades, the Board shall put all the passed students in a rank order and will

award grades as follows:

• A-1 Top 1/8th of the passed candidates
• A-2 Next 1/8th of the passed candidates
• B-1 Next 1/8th of the passed candidates
• B-2 Next 1/8th of the passed candidates
• C-1 Next 1/8th of the passed candidates
• C-2 Next 1/8th of the passed candidates
• D-1 Next 1/8th of the passed candidates
• D-2 Next 1/8th of the passed candidates
• E Failed candidates

Notes: