Class 9

Amaira

Asked: October 30, 2020In: Class 9

A TV tower stands vertically on a bank of a canal. From a point on the other bank directly opposite the tower, the angle of elevation of the top of the tower is 60°. From another point 20 m away from this point on the line joing this point to the foot of the tower, the angle of elevation of the top of the tower is 30° Find the height of the tower and the width of the canal.

NCERT Solutions for Class 10 Maths Chapter 9 Important NCERT Questions SOME APPLICAT IONS OF TRIGONOMETRY (Height and Distance) NCERT Books for Session 2022-2023 CBSE Board and UP Board Others state Board EXERCISE 9.1 Page No:204 Questions No:11

Kartik singh

Asked: October 30, 2020In: Class 9

A bag contains lemon flavored candies only. Malini takes out one candy without looking into the bag. What is the probability that she takes out.

NCERT Solutions for Class 10 Maths Chapter 15 Important NCERT Questions PROBABILITY NCERT Books for Session 2022-2023 CBSE Board and UP Board Others state Board EXERCISE 9.1 Page No:308 Questions No:6 A bag contains lemon flavored candies only. Malini takes out ...

Prisha Garg

Asked: October 28, 2020In: Class 9

Which of the following materials fall in the category of a “pure substance”? Ice, Milk, Iron, Hydrochloric acid, Calcium oxide, Mercury, Brick, Wood, Air.

NCERT Solutions for Class 9 Science Chapter 2 Is Matter Around Us Pure NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-29 Questions No-7

Prisha Garg

Asked: October 28, 2020In: Class 9

Identify the solutions among the following mixtures. Soil, Sea water, Air, Coal, Soda water.

NCERT Solutions for Class 9 Science Chapter 2 Is Matter Around Us Pure NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-29 Questions No- 8

Poll

Prisha Garg

Asked: October 28, 2020In: Class 9

Which of the following will show “Tyndall effect”?

NCERT Solutions for Class 9 Science Chapter 2 Is Matter Around Us Pure NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-29 Questions No-9

Prisha Garg

Asked: October 28, 2020In: Class 9

Classify the following into elements, compounds and mixtures. Sodium, Soil, Sugar solution, Silver, Calcium carbonate, Tin, Silicon, Coal, Air, Soap, Methane, Carbon dioxide, Blood.

NCERT Solutions for Class 9 Science Chapter 2 Is Matter Around Us Pure NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-29 Questions No- 10

Prisha Garg

Asked: October 28, 2020In: Class 9

Which of the following are chemical changes?

NCERT Solutions for Class 9 Science Chapter 2 Is Matter Around Us Pure NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-29 Questions No-11 Which of the following are chemical changes? (a) Growth of a plant (b) Rusting ...

Bhavani das

Asked: October 28, 2020In: Class 9

In a reaction, 5.3 g of sodium carbonate reacted with 6 g of ethanoic acid. The products were 2.2 g of carbon dioxide, 0.9 g water and 8.2 g of sodium ethanoate. Show that these observations are in agreement with the law of conservation of mass.

Class9, Science, NCERT, CBSE, 2022-2023, Chapter 2, Atoms And Molecules, NCERT Solutions for Class 9 Science Chapter 3 Atoms And Molecules NCERT Books for Session 2022-2023 CBSE Board and UP Board Intext Questions Page No-33 Questions No-1 sodium carbonate + ethanoic acid ...

Bhavani das

Asked: October 28, 2020In: Class 9

Hydrogen and oxygen combine in the ratio of 1:8 by mass to form water. What mass of oxygen gas would be required to react completely with 3 g of hydrogen gas?

Atoms And Molecules NCERT Books for Session 2022-2023 CBSE Board and UP Board Intext Questions Page No-33 Questions No-2

Daksha Singh

Asked: October 28, 2020In: Class 9

Write the chemical formulae of the following.

NCERT Solutions for Class 9 Science Chapter 3 Atoms And Molecules NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-44 Questions No- 4 Write the chemical formulae of the following. (a) Magnesium chloride (b) Calcium oxide (c) Copper nitrate (d) ...

Category: Class 9

A bag contains lemon flavored candies only. Malini takes out one candy without looking into the bag. What is the probability that she takes out.

Which of the following materials fall in the category of a “pure substance”? Ice, Milk, Iron, Hydrochloric acid, Calcium oxide, Mercury, Brick, Wood, Air.

Identify the solutions among the following mixtures. Soil, Sea water, Air, Coal, Soda water.

Which of the following will show “Tyndall effect”?

Classify the following into elements, compounds and mixtures. Sodium, Soil, Sugar solution, Silver, Calcium carbonate, Tin, Silicon, Coal, Air, Soap, Methane, Carbon dioxide, Blood.

Which of the following are chemical changes?

In a reaction, 5.3 g of sodium carbonate reacted with 6 g of ethanoic acid. The products were 2.2 g of carbon dioxide, 0.9 g water and 8.2 g of sodium ethanoate. Show that these observations are in agreement with the law of conservation of mass.

Hydrogen and oxygen combine in the ratio of 1:8 by mass to form water. What mass of oxygen gas would be required to react completely with 3 g of hydrogen gas?

Write the chemical formulae of the following.

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