Class 6 - Our Pasts-I- Ch1: WHAT, WHERE, HOW AND WHEN? (#cbseNotes)

Our Pasts-I
Ch1: WHAT, WHERE, HOW AND WHEN?

Cave Painting (Prehistoric)

NCERT Solutions and Q & A

Q1. Match the following.

Answer:
Narmada Valley             -   Hunting and gathering.
Magadha                        -   The first big kingdom.
Garo hills                       -   Early agriculture.
Indus and its tributaries -   The first cities.
Ganga Valley                 -   Cities about 2500 years ago.

Class 6 - Science - Ch2 - Components of Food - NCERT Solution

NCERT Solutions and Other Questions and Answers

Q1: Name the major nutrients in our food.

Answer: The major nutrients in our food are carbohydrates, proteins, fats, vitamins and minerals. In addition, food also contains dietary fibres (roughage) and water. 

Class 8- History - Ch1 - How, When and Where (NCERT Solutions)

Q1. State whether true or false:
(a) James Mill divided Indian history into three periods – Hindu, Muslim, Christian.
(b) Official documents help us understand what the people of the country think.
(c) The British thought surveys were important for effective administration.

Answer:
(a) False (James Mill divided Indian history into three periods - Hindu, Muslim and British)
(b) False
(c) True

Q2. What is the problem with the periodisation of Indian history that James Mill offers?

Answer:  James Mill divided the period of Indian History into communal lines. He had the wrong notion about the achievements of Indians during the ancient and medieval period. According to him  all sorts of developments and progress made by Indians were due to colonial rule. He depicted a prejudiced version of Indian history.

Class 10 - Biology - CH6 - Life Processes (#cbsenotes)

Life Processes

MCQs, NCERT Chapter Solutions and other Q & A

☛ See Quiz Life Processes


Q1. The kidneys in human beings are a part of the system for
(a) nutrition.
(b) respiration.
(c) excretion.
(d) transportation.

Answer: (c) excretion.


Q2. The xylem in plants is responsible for
(a) transport of water.
(b) transport of food.
(c) transport of amino acids.
(d) transport of oxygen.

Answer: (a) transport of water.

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Class 7: Our Pasts-2 - Chapter 1: Tracing Changes Through Thousand years (#eduvictors)(#class7History)

Class 7: Our Pasts-2 - Chapter 1: Tracing Changes Through Thousand years

NCERT Chapter Solutions

Q1: Who was considered a “foreigner” in the past?

Answer: In past (medieval period), a foreigner is referred to any person who was not a part of the same society or culture. For example, a city-dweller might regard a forest-dweller as a foreigner. But two peasants living in the same village were not foreigners to each other even though they belong to a different caste or religious backgrounds.


Q2: State whether true or false:
(a) We do not find inscriptions for the period after 700.

(b) The Marathas asserted their political importance during this period.

(c) Forest-dwellers were sometimes pushed out of their lands with the spread of agricultural settlements.

(d) Sultan Ghiyasuddin Balban controlled Assam, Manipur and Kashmir.

Answer:
(a) False
(b) True
(c) True
(d) False

Q3: Fill in the blanks:

(a) Archives are places where ____________ are kept.
(b) _______________ was a fourteenth-century chronicler.
(c) , , , ______ and ________ were some of the new crops introduced into the subcontinent during this period.

Answer:
(a) Archives are places where manuscripts are kept.
(b) Ziauddin Barani Amir Khusrao was a fourteenth-century chronicler.
(c) Potatoes, corn, chillies,  and coffee were some of the new crops introduced into the subcontinent during this period.

NTSE SAT Quiz-8 (Social Studies)

NTSE/CTET/Class7/Class8 (Social Studies)

1. Article 17 of the constitution of India provides for
(a) equality before law.
(b) equality of opportunity in matters of public employment.
(c) abolition of titles.
(d) abolition of untouchability.

2. How many permanent members are there in UN Security Council?
(a) Three
(b) Four
(c) Five
(d) Six

3. Social Contract Theory was advocated by
(a) Hobbes, Locke and Rousseau.
(b) Plato, Aristotle and Hegel.
(c) Mill, Bentham and Plato.
(d) Locke, Mill and Hegel.

Class 7 - Geography - Ch1 - Environment - NCERT Solutions

NCERT Chapter Solutions and other Questions and Answers

Q1. Answer the following questions.
(i) What is an ecosystem?
 Answer: It is a system formed by the interaction of all living organisms with each other and with the physical and chemical actors of the environment in which they live, all linked by transfer of energy and material. Large rain forest, grassland, desert, mountains, lake, river, ocean and even a small pond are examples of ecosystem.

(ii) What do you mean by natural environment? 
Answer:  All living and non-living things which exist together naturally form natural environment. It refers to both biotic and abiotic conditions exist on the earth. Land, water, air, plants and animals comprise the natural environment.

(iii) Which are the major components of the environment? 
Answer: Following are the major components of the environment:

1. Natural components: Land, Water, Air, biosphere.
2. Man made components: Bridge, buildings, roads, monuments etc.
3. Activities and interactions of human beings: social, family, political, economic activities etc.

Class 9 - Science - CH8 - Motion #class9Science #class9Physics #eduvictors

Motion

NCERT Chapter Questions and Answers and other Q & A

Q1: An object has moved through a distance. Can it have zero displacements? If yes, support your answer with an example.

Answer: Yes an object can have zero displacements even though it has moved through a distance. It happens when the object moves back to its original position i.e. final position coincides with the starting position.

Example: Suppose an object travels from O to C and then comes back to its original position O.

Total distance traveled = actual path covered = OC + CO = 25 + 25 = 50m

Total displacement = shortest distance between final position and initial position = 0m

Q2: What do you mean by a body in rest?

Answer: A body is said to be at rest if it does not change its position with respect to a fixed point in its surroundings.

Q3: Are motion and rest absolute or relative? Explain with an example.

Answer: No these terms rest and motion are relative. For example, a person inside a car, carrying a ball in his hand will see the ball is at rest. While for another person, outside the car will see the ball is also moving.

Q4: What is meant by scalars and vectors?

Answer:

• Scalar Quantities: Quantities that require magnitudes only to specify them are called scalar quantities or scalars. Mass, length, time, temperature, angle, area, speed, distance, volume and density are examples of scalar quantities.
• Vector Quantities: Quantities that require both magnitudes and direction to specify them are called vector quantities or vectors. Displacement, velocity, force, momentum, weight etc. are examples of vectors.

Q5: A farmer moves along the boundary of a square field of side 10 m in 40 s. What will be the magnitude of displacement of the farmer at the end of 2 minutes 20 seconds?

Answer:
As shown in the figure, let us assume, that the farmer starts from A.
Given, that the length of each side = 10m
Distance covered in 1 lap = Perimeter of ABCD = 4 x 10 = 40m

Time is taken by farmer to cover 1 lap = the 40s
Speed of farmer = Distance ÷ Time Taken for one lap = 40/40s = 1m/s

Distance covered by farmer in 2min 20 secs = Speed x Time = 1 x 140s = 140m

Number of laps covered = 140 ÷ 40 = 3.5 laps.
⇒ After the 140s, the farmer will be at position C (i.e. 3 and ½ laps).

Displacement = AC = (AB² + BC²)^½                 (applying Pythagoras theorem)
                   = (100+100)^½ = 10√2 = 10 x 1.414 = 14.14m      .... (answer)

Question: Can you find out displacement, if the farmer starts from the mid-point of AB?

Note: Displacement is a vector quantity that measures the shortest distance (straight line) between the starting point and ending point, not taking the actual path travelled into account.

Class 6 - Geography - Ch1 - THE EARTH IN THE SOLAR SYSTEM (#eduvictors)(#cbsenotes)

THE EARTH IN THE SOLAR SYSTEM

Our Solar System

NCERT Textbook Solutions and other Questions and Answers

Q1: Answer the following questions briefly.

(a) How does a planet differ from a star?

Answer: 

1. Stars emit their own light and heat. While planets do not have their own light.
2. There are millions of stars while there are eight planets in our solar system.
3. Usually stars twinkle at night while planets glow without any flickering.

(b) What is meant by the ‘Solar System’?

Answer:
The sun, eight planets, satellites and some other celestial bodies known as asteroids and meteoroids form the solar system.The sun is in the centre of the solar system. All the planets of the solar system move around the sun in fixed paths.


(c) Name all the planets according to their distance from the sun.

Answer: Mercury, Venus, Earth.Mars, Jupiter, Saturn, Uranus, Neptune

(d)  Why is the Earth called a unique planet?

Answer:
Following are the reasons the Earth is considered as a unique planet:

• The land, water, air and the favourable climate facilitate the origin of life and help them in their development on the Earth. 
• The earth is neither too hot nor too cold.
• The air has life-supporting gases like oxygen.
• No other planet of the solar family has a life like that of the Earth.