Class 8 - Ch1 - The Indian Constitution - Q & A

NCERT Chapter Solutions and other Q & A from examination papers.

Q1. Why does a democratic country need a Constitution?
Answer: Constitution is crucial to the working of democracy for the following reasons:

1. Constitution tells us what the fundamental nature of our society is. It helps serve as a set of rules and principles that all persons in a country can agree upon as the basis of the way in which they want the country to be governed.
2. Constitution defines the nature of a country’s political system. Constitution plays a crucial role
   in laying out certain important guidelines that govern decision-making within these societies.
3. Constitution provides safeguards against misuse of authority. 
4. It ensures that a dominant group does not use its power against other, less powerful people or
   groups. It helps to prevent tyranny or domination by the majority on a minority.
5. Constitution helps to protect us against certain decisions that we might take that could have an
   adverse effect on the larger principles that the country believes in. A good Constitution does
   not allow these whims to change its basic structure. It does not allow for the easy overthrow of provisions that guarantee rights of citizens and protect their freedom.

Q2: Who is known as Father of Indian Constitution?
Answer: Dr Babasaheb Ambedkar is known as the Father of the Indian Constitution.

Q3: What would happen if there were no restrictions on the power of elected representatives?
Answer: If there were no restrictions on the power of elected representatives, there would always be possibility that they might misuse the authority for their vested interests. Constitution provides safeguards against misuse of authority.

Q4: Look at the wordings of the two documents given below. The first column is from the 1990 Nepal Constitution. The second column is from the more recent Interim Constitution of Nepal.

1990 Constitution of Nepal Part 7: Executive	2007 Interim Constitution Part 5: Executive
Article 35: Executive Power: The executive power of the kingdom of Nepal shall be exercised exclusively by His Majesty.	The executive power of Nepal shall, pursuant to this Constitution and other laws, be vested in the Council of Ministers. The executive functions of Nepal shall be taken in the name of the Prime Minister.

What is the difference in who exercises ‘Executive Power’ in the above two Constitutions of Nepal? Keeping this in mind, why do you think Nepal needs a new Constitution today?

Class 9 - Ch1 - French Revolution - Q & A

French Revolution - Q & A

Q1: Important dates related to French Revolution

Answer:

• 1774: Louis XVI becomes King of France.
• 1789: Third Estate forms National Assembly. The Bastille is stormed., Session of Estates General
• 1791: A constitution is framed to limit the powers of the monarch.
• 1792-93: France becomes a republic. The king is executed. Directory rules France.
• 1804: Napoleon becomes emperor of France.
• 1815: Napoleon was defeated at Waterloo.
• 1848: Slavery was abolished in all French colonies.
• 1946: French women got the right to vote.

Q2: What principles were supported by the revolution?
Answer: Liberty, Equality and Fraternity

Class 9 - Chapter 5 - Cell - Fundamental Unit of Life - NCERT Q & A #class9-biology #eduvictors

Fundamental Unit of Life 

NCERT Q & A

Q1: Who observed the cells the first time?
Answer: Robert Hooke. He observed a thin slice of cork cells under a simple microscope.

 

Simple Microscope made by Robert Hooke (credits: Wikipedia)

Q2: Define Cell

Answer: The cell is the structural and functional unit of life.

Q3: Who proposed the cell theory?

Answer: Schleiden (1838) and Schwann (1839).

Q4: Who expanded cell theory by suggesting that all cells arise from pre-existing cells?

Answer: Virchow (1855.

Q5: In which year the electron microscope was invented?

Answer: 1940

Q6: Name the book in which Robert Hooke published his observations about cork cells.

Answer: Micrographia.

Class 10 - Geography - Ch1- Resource and Development

Resource and Development

MCQs, Q & A

Q1: MCQs
Answer:
(i) Which one of the following type of resource is iron ore?
 (a) Renewable
(b) Biotic
(c) Flow
(d) Non-renewable

Answer: (d) Non-renewable

Welcome ISEET and Good BYE IIT-JEE & AIEEE!

The HRD ministry of Govt Of India is ready to go ahead and conduct common entrance examination from 2013 onwards.

IIT-JEE, AIEEE plus other engineering entrance examinations will be replaced by a new examination called Indian Science Engineering Eligibility Test or ISEET.

Which are the institutes that are going to accept ISEET score?

• 15 Indian institutes of Technology (IITs), IT-BHU, & IS-Dhanbad
• 30 National Institutes of Technology (NITs)
• 5 Indian institutes of Information Technology (IIITs)
• 6 Indian Institutes of Science Education & Research (IISERs).
• Indian Institute of Space Science & Technology (IIST).
• Indian Institute of Science (IISc) – (only BS Course/Programme)
• 3 Indian Statistical Institutes (ISIs).
• Several other Govt./centrally-funded institutions.
• Some pvt. Colleges/universities at National level. (may be)
• Hundreds of State Govt. funded/controlled colleges in various states.
• Others private engineering Colleges in various states.

Who will conduct the ISEET exam?
Most probably CBSE and IITs jointly.

Class 10 - Science - Ch12 - Electricity - Q & A

Electricity

Q & A
 
Q1: What type of charge does an ebonite rod acquire when it is rubbed with wool? What is
the nature of the charge acquired by wool?

Answer: Ebonite rod has a negative charge and woollen cap has an equal amount of positive charge.

Note: Charging by friction always produces equal and opposite charges on the twobodies which are rubbed in intimate contact.

Q2: What is the charge on an electron (e)?

Answer: -1.6 x 10 ^-19 Coulombs (C)


Q3: Define Coulomb's law.

Answer: The magnitude of the force of attraction (or repulsion) between two point charges is
directly proportional to the quantity of charge present on each of them and inversely
proportional to the square of the distance separating them.

Let q1 and q2 be two like charges separated by a distance d, then the two charges will continue to repel each other with a force (F). Mathematically it is represented as:

Q4: What is the SI unit of charge? Is it a scalar or vector quantity?
Answer: SI unit of charge is Coulomb (C). It is a scalar quantity.

Class 8 - Science NCERT Book solutions Available

Class 8 Science NCERT book solutions for all chapters are available in software form. Click the image to download the and install the software. The package also includes sample assessment quiz, chapter test paper and flip cards.

http://www.eduvictors.com/download.html

Follow the link to go to download page. Download the software, unzip and run setup.exe to install it.
The software will run on Windows platform (Win XP, Vista and Windows 7 flavours only).

You may see the NCERT solutions in offline view and can also access this blog in online mode.

Range of measurement (Class 11 - Physics - Ch2)

Click on the figure to go flash animation to see the range of order of length from 10^-35 m (Planck length) to 10²⁶m, size of visible universe.

courtesy nasa (http://apod.nasa.gov/apod/ap120312.html)

Q1: What is 0.000047 in scientific notation?
Answer: 4.7 x 10^-5

Q2: Q: Students X, Y and Z were asked by their teacher to measure the volume of water in a beaker.
X wrote : 200; Y wrote : 200 mL and Z wrote : 200 Lm
Which one of these answers is correct?
Answer: The first one has no units. Therefore, we do not know what does it mean.
The third is also not correct because there is no unit like Lm.
The second one is the only correct answer because it denotes millilitre.

Q3: Convert 10 inches into meters.
Answer: We know that 1 inch = 2.54 cm (centimeters)

CBSE-Class 9 - Science - Ch1- Matter In Our Surroundings- Short Q & A #class9-chemistry #eduvictors

Matter In Our Surroundings

Q1: Define matter.

Answer: Anything that occupies space and has mass is known as matter.

Q2: What are the characteristics of matter?

Answer:

• A large number of particles together constitute matter.
• These particles are of very small size.
• Particles of matter have spaces among them.
• Particles of matter are in continuous motion i.e. they possess kinetic energy.
• Particles of matter attract each other i.e. interparticle forces of attraction or intermolecular forces.

Q3: How matter is classified in terms of physical state?

Answer: solid, liquid and gas.

Q4: How matter is classified in terms of composition?

Answer: element, compound and mixture.

Q5: What are different physical states of matter? Name their properties as well?

Answer:

CBSE - Class 8 - Science - Ch8 - Cell Structure and Functions

NCERT Solutions

Q1:Indicate whether the following statements are True (T) or False (F).

Answer: (a) Unicellular organisms have one-celled body. True
(b) Muscle cells are branched. False
(c) The basic living unit of an organism is an organ. False
(d) Amoeba has irregular shape. True

Q2. Make a sketch of the human nerve cell. What function do nerve cells perform?

Answer:

A neuron or nerve cell is elongated in shape. Nerve cells are branched to receive and transfer messages. Nerve cells help control and coordinate the working of different parts of the body. The brain is made up of approximately 100 billion neurons.

Neurons have specialised projections called dendrites and axons. Dendrites bring information to the cell body and axons take information away from the cell body. Some nerve cells are short in length (less than a millimetre) and some are long up to 1.5 meters.

Q3. Write short notes on the following:
(a) Cytoplasm
(b) Nucleus of a cell

Answer:
(a) Cytoplasm: The jelly-like substance between the nucleus and the cell membrane is called cytoplasm. Various cell organelles like ribosomes, mitochondria etc. are suspended inside cytoplasm. It helps exchange and storage of substances among cell organelles. Most of the metabolic activities occur inside cytoplasm.

(b) Nucleus of a cell: The central dense round body in the centre is called the nucleus. It is an important component of the living cell. It is generally spherical and located in the centre of the cell. It can be stained and seen easily with the help of a microscope. Nucleus is separated from the cytoplasm by a membrane called the nuclear membrane. This membrane is also porous and allows the movement of materials between the cytoplasm and the inside of the nucleus. A smaller spherical body in the nucleus, is called the nucleolus. Nucleus also contains thread-like structures called chromosomes. These carry genes and help in inheritance or transfer of
characters from the parents to the offspring.