Tiwari Academy Discussion

Misha Rajput

Asked: October 30, 2020In: Class 9

List any three human activities which would lead to an increase in the carbon dioxide content of air.

NCERT Solutions for Class 9 Science Chapter 14 Important NCERT Questions Natural Resources NCERT Books for Session 2022-2023 CBSE Board and UP Board Intext Questions Page No-201 Questions No-3

Misha Rajput

Asked: October 30, 2020In: Class 9

What is the greenhouse effect?

NCERT Solutions for Class 9 Science Chapter 14 Important NCERT Questions Natural Resources NCERT Books for Session 2022-2023 CBSE Board and UP Board Intext Questions Page No-201 Questions No-4

Misha Rajput

Asked: October 30, 2020In: Class 9

Why is water essential for life?

NCERT Solutions for Class 9 Science Chapter 14 Important NCERT Questions Natural Resources NCERT Books for Session 2022-2023 CBSE Board and UP Board Exercises Questions Page No-201 Questions No-2

Bhavani das

Asked: October 30, 2020In: Class 9

Which postulate of Dalton’s atomic theory can explain the law of definite proportions?

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-4

Bhavani das

Asked: October 30, 2020In: Class 9

Define the atomic mass unit.

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-35 Questions No-1

Bhavani das

Asked: October 30, 2020In: Class 9

Why is it not possible to see an atom with naked eyes?

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-35 Questions No-2

Bhavani das

Asked: October 30, 2020In: Class 9

Write down the formulae of sodium oxide.

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-39 Questions No-1 Write down the formulae of: (i) sodium oxide (ii) aluminum chloride (iii) sodium suphide (iv) magnesium hydroxide

Bhavani das

Asked: October 30, 2020In: Class 9

Write down the names of compounds represented by the following formulae Al₂(SO₄)₃.

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-39 Questions No-2 Write down the names of compounds represented by the following formulae: (i) Al2(SO4)3 (ii) CaCl2 (iii) K2SO4 (iv) ...

Bhavani das

Asked: October 30, 2020In: Class 9

What is meant by the term chemical formula?

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-39 Questions No-3

Bhavani das

Asked: October 30, 2020In: Class 9

How many atoms are present in a (i) H₂S molecule and (ii) PO₄³⁻ ion?

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-39 Questions No-14 (i) H₂S molecule and (ii) PO₄³⁻ ion?

List any three human activities which would lead to an increase in the carbon dioxide content of air.

What is the greenhouse effect?

Why is water essential for life?

Which postulate of Dalton’s atomic theory can explain the law of definite proportions?

Define the atomic mass unit.

Why is it not possible to see an atom with naked eyes?

Write down the formulae of sodium oxide.

Write down the names of compounds represented by the following formulae Al₂(SO₄)₃.

What is meant by the term chemical formula?

How many atoms are present in a (i) H₂S molecule and (ii) PO₄³⁻ ion?

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