Tiwari Academy Discussion

Tejal Singh

Asked: October 22, 2020In: Class 9

Why is ice at 273 K more effective in cooling than water at the same temperature?

NCERT Solution for Class 9 Science Chapter 1 Matter in Our Surroundings NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-12 Questions No-7

Tejal Singh

Asked: October 22, 2020In: Class 9

What produces more severe burns, boiling water or steam?

NCERT Solution for Class 9 Science Chapter 1 Matter in Our Surroundings NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-12 Questions No-8

Anaya Thakur

Asked: October 22, 2020In: Class 9

What is meant by a pure substance?

NCERT Solution for Class 9 Science Chapter 2 Is Matter Around Us Pure NCERT Books for Session 2022-2023 CBSE Board and UP Board Intext Questions Page No-15 Questions No-1

Anaya Thakur

Asked: October 22, 2020In: Class 9

List the points of differences between homogeneous and heterogeneous mixtures.

NCERT Solution for Class 9 Science Chapter 2 Is Matter Around Us Pure NCERT Books for Session 2022-2023 CBSE Board and UP Board Intext Questions Page No-15 Questions No-2

Anaya Thakur

Asked: October 22, 2020In: Class 9

Differentiate between homogeneous and heterogeneous mixtures with examples.

NCERT Solution for Class 9 Science Chapter 2 Is Matter Around Us Pure NCERT Books for Session 2022-2023 CBSE Board and UP Board Intext Questions Page No-18 Questions No-1

Anaya Thakur

Asked: October 22, 2020In: Class 9

How are sol, solution and suspension different from each other?

NCERT Solution for Class 9 Science Chapter 2 Is Matter Around Us Pure NCERT Books for Session 2022-2023 CBSE Board and UP Board Intext Questions Page No-18 Questions No-2

Anaya Thakur

Asked: October 22, 2020In: Class 9

To make a saturated solution, 36 g of sodium chloride is dissolved in 100 g of water at 293 K. Find its concentration at this temperature.

NCERT Solution for Class 9 Science Chapter 2 Is Matter Around Us Pure NCERT Books for Session 2022-2023 CBSE Board and UP Board Intext Questions Page No-18 Questions No-3

Anaya Thakur

Asked: October 22, 2020In: Class 9

How will you separate a mixture containing kerosene and petrol (difference in their boiling points is more than 25ºC), which are miscible with each other?

NCERT Solution for Class 9 Science Chapter 2 Is Matter Around Us Pure NCERT Books for Session 2022-2023 CBSE Board and UP Board Intext Questions Page No-24 Questions No-1

Anaya Thakur

Asked: October 22, 2020In: Class 9

Name the technique to separate butter from curd.

NCERT Solution for Class 9 Science Chapter 2 Is Matter Around Us Pure NCERT Books for Session 2022-2023 CBSE Board and UP Board Intext Questions Page No-24 Questions No-2 Part-1

Anaya Thakur

Asked: October 22, 2020In: Class 9

Name the technique to separate salt from sea-water.

NCERT Solution for Class 9 Science Chapter 2 Is Matter Around Us Pure NCERT Books for Session 2022-2023 CBSE Board and UP Board Intext Questions Page No-24 Questions No-2 Part-2

Why is ice at 273 K more effective in cooling than water at the same temperature?

What produces more severe burns, boiling water or steam?

What is meant by a pure substance?

List the points of differences between homogeneous and heterogeneous mixtures.

Differentiate between homogeneous and heterogeneous mixtures with examples.

How are sol, solution and suspension different from each other?

To make a saturated solution, 36 g of sodium chloride is dissolved in 100 g of water at 293 K. Find its concentration at this temperature.

How will you separate a mixture containing kerosene and petrol (difference in their boiling points is more than 25ºC), which are miscible with each other?

Name the technique to separate butter from curd.

Name the technique to separate salt from sea-water.

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