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The law of constant proportion states :
(b) This is the correct statement of law of constant proportion. https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-3/
(b) This is the correct statement of law of constant proportion.
https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-3/
See lessThe formula of calcium phosphate is
(d) Ca has the valency 2 and phosphate has the valency 3. Therefore, calcium phosphate has the formula Ca₃(PO₄)₂. https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-3/
(d) Ca has the valency 2 and phosphate has the valency 3. Therefore, calcium phosphate has the formula Ca₃(PO₄)₂.
https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-3/
See lessAlloys are mixtures of (i) two metals. (ii) a metal and a non-metal. (iii) two non-metals. (iv) a metal and mercury.
The correct answer is (c) (i) and (iv). https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-2/
The correct answer is (c) (i) and (iv).
https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-2/
See lessDuring a chemical change, the
Chemical properties of a substance change and Physical properties of a substance change. https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-2/
Chemical properties of a substance change and Physical properties of a substance change.
https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-2/
See lessGiven that A is a square matrix of order 3 and |A| = -4, then |adj. A| is equal to:
We are given that A is a square matrix of order 3 and |A| = -4. We are asked to find the value of |adj(A)|. The formula for the determinant of the adjugate matrix adj(A) for a square matrix A of order n is |adj(A)| = |A|^(n-1) For a matrix of order 3, n = 3. Hence, the above formula becomes |adj(A)|Read more
We are given that A is a square matrix of order 3 and |A| = -4. We are asked to find the value of |adj(A)|.
The formula for the determinant of the adjugate matrix adj(A) for a square matrix A of order n is
|adj(A)| = |A|^(n-1)
For a matrix of order 3, n = 3. Hence, the above formula becomes
|adj(A)| = |A|^(3-1) = |A|²
We know that |A| = -4. So,
|adj(A)| = (-4)² = 16
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See lesshttps://www.tiwariacademy.com/ncert-solutions/class-12/maths/#chapter-4