Untitled Quiz

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What is the main focus of the document?

Mathematics curriculum for Class IX
History curriculum for Class IX
Literature curriculum for Class IX
Science curriculum for Class IX (correct)

What year was the first edition of the textbook published?

February 2005
February 2007
February 2006 (correct)
February 2008

Which of the following statements is true regarding the publication rights?

It can be lent by way of trade.
It can be reproduced without any consent.
It can be sold or resold freely.
It cannot be reproduced without the publisher’s permission. (correct)

What is the significance of the price printed on the page?

It is the correct price of the publication. (C) Signup and view all the answers

What restrictions apply to the selling of this textbook?

It cannot be sold in any form other than published. (A) Signup and view all the answers

What three states of matter are commonly recognized?

Solid, Liquid, Gas (A) Signup and view all the answers

What characteristic does not apply to solids?

Easily compressible (B) Signup and view all the answers

Which of the following is an example of a liquid?

Water (B) Signup and view all the answers

When excessive force is applied to solid matter, what is a likely outcome?

It breaks (D) Signup and view all the answers

What is the main reason that solids maintain a fixed shape?

Strong intermolecular forces (D) Signup and view all the answers

What happens to the volume of a liquid when it is transferred between containers?

It remains the same (D) Signup and view all the answers

Which property is generally not associated with gases?

Definite volume (D) Signup and view all the answers

What occurs when a sponge is pressed and air is expelled?

The sponge compresses (A) Signup and view all the answers

What effect does the latent heat of vaporization of water have on a hot surface?

It cools the surface. (B) Signup and view all the answers

Why do we feel cool when perspiration evaporates from our skin?

Evaporation absorbs heat from the body. (B) Signup and view all the answers

How does cotton help keep us cool during summer?

It absorbs and facilitates evaporation of sweat. (C) Signup and view all the answers

Why does a desert cooler work effectively on a hot dry day?

It adds humidity to the air. (B) Signup and view all the answers

What happens to water when it is kept in an earthen pot during summer?

It cools down due to evaporation from the pot. (D) Signup and view all the answers

What sensation do we feel when we apply acetone to our palm?

The palm becomes cold due to heat absorbed during vaporization. (A) Signup and view all the answers

Why is it easier to sip hot tea or milk from a saucer rather than from a cup?

The saucer has a larger surface area for evaporation. (D) Signup and view all the answers

What type of clothing is recommended for hot weather?

Lightweight cotton fabrics. (D) Signup and view all the answers

What is the term used for the direct transformation of a solid to a gas without becoming a liquid?

Sublimation (B) Signup and view all the answers

How is solid carbon dioxide commonly known due to its sublimation properties?

Dry ice (A) Signup and view all the answers

What phenomenon occurs when gas converts directly into solid without becoming liquid?

Deposition (A) Signup and view all the answers

What determines the state of a substance as solid, liquid, or gas?

Temperature and pressure (A) Signup and view all the answers

What unit is commonly used to measure atmospheric pressure at sea level?

Atmosphere (atm) (A) Signup and view all the answers

When a gas is compressed by increasing pressure, what generally happens to the particles?

They move closer together (D) Signup and view all the answers

What is the pressure measured at sea level commonly referred to as?

Normal atmospheric pressure (D) Signup and view all the answers

What is the relationship between the distance of constituent particles and the state of matter?

Closer particles lead to solid states, while gases have particles farther apart (A) Signup and view all the answers

What occurs to the kinetic energy of particles when the temperature of a solid increases?

It increases, causing particles to vibrate faster. (C) Signup and view all the answers

What is the boiling point of water at atmospheric pressure?

373 K (D) Signup and view all the answers

What does the melting point of a solid indicate?

The strength of attraction between its particles. (B) Signup and view all the answers

At 373 K, how does the energy of water vapor compare to that of liquid water?

Water vapor has more energy than liquid water. (C) Signup and view all the answers

What is the latent heat of vaporization?

The energy absorbed by a liquid to convert into gas. (A) Signup and view all the answers

When do particles in a liquid gain enough energy to change into a gas?

When the temperature is raised to the boiling point. (B) Signup and view all the answers

What happens at the melting point of ice?

Ice starts melting and becomes liquid water. (A) Signup and view all the answers

What is the melting point of ice in Kelvin?

273 K (D) Signup and view all the answers

What is the primary reason for rationalising the content in textbooks as mentioned?

To align with the National Education Policy's emphasis on experiential learning (B) Signup and view all the answers

Which of the following is NOT one of the considerations for rationalising the content of textbooks?

Relevance in current educational standards (B) Signup and view all the answers

What aspect of education does the NCERT aim to promote through the rationalisation of textbooks?

Experiential learning and creativity (D) Signup and view all the answers

Who played a significant role in overseeing the contributions to the textbook development?

Professor Mrinal Miri and Professor G.P. Deshpande (D) Signup and view all the answers

Which of the following factors is considered when evaluating content for rationalisation?

Access to content through self-learning (A) Signup and view all the answers

What is the purpose of reducing the content load on students during the COVID-19 pandemic?

To alleviate stress and improve learning outcomes (A) Signup and view all the answers

What does the NCERT particularly thank in relation to the development of the textbook?

Teachers and their principals (C) Signup and view all the answers

How does the NCERT ensure continuous improvement in the quality of its products?

By collecting comments and suggestions for revisions (A) Signup and view all the answers

Textbook Edition

The version of a textbook, such as the first edition or a reprint.

Copyright

Legal right granted to the creator of a work, preventing unauthorized copying or distribution.