Question Answers

A solution is a mixture of 0.01 M KI and 0.1 M KCl. If solid AgNO3 is added to the solution, what is the [I^−] when AgCl begins to precipitate? [Ksp ​(AgI)=1.5×10^−16 ;[Ksp ​ (AgCl)=1.8×10^−10 ] A solution is a mixture of 0.01 M KI and 0.1 M KCl. If solid AgNO3 is added to [...]

Are the following statements ‘True’ or ‘False’? Justify your answers. (v) If all the zeroes of a cubic polynomial are negative, then all the coefficients and the constant term of the polynomial have the same sign. Are the following statements ‘True’ or ‘False’? Justify your answers. (v) If all the zeroes of a cubic polynomial [...]

Are the following statements ‘True’ or ‘False’? Justify your answers. (iv) If two of the zeroes of a cubic polynomial are zero, then it does not have linear and constant terms. Are the following statements ‘True’ or ‘False’? Justify your answers. (iv) If two of the zeroes of a cubic polynomial are zero then it [...]

Are the following statements ‘True’ or ‘False’? Justify your answers. (iii) If the graph of a polynomial intersects the x-axis at exactly two points, it need not be a quadratic polynomial. Are the following statements ‘True’ or ‘False’? Justify your answers. (iii) If the graph of a polynomial intersects the x-axis at exactly two points [...]

Are the following statements ‘True’ or ‘False’? Justify your answers. (ii) If the graph of a polynomial intersects the x-axis at only one point, it cannot be a quadratic polynomial. Are the following statements ‘True’ or ‘False’? Justify your answers. (ii) If the graph of a polynomial intersects the x-axis at only one point it [...]

A solution is 0.10M in Ba(NO3)2 and 0.10M in Sr(NO3)2. If solid Na2CrO4 is added to the solution, what is [Ba2+], when SrCrO4 beings to precipitate? [Ksp(BaCrO4)=1.2×10^−10,Ksp(SrCrO4)=3.5 × 10^−5] A solution is 0.10M in Ba(NO3)2 and 0.10M in Sr(NO3)2. If solid Na2CrO4 is added to the solution Ksp(SrCrO4)=3.5 × 10^−5] what is [Ba2+] when SrCrO4 [...]

Are the following statements ‘True’ or ‘False’? Justify your answers. (i) If the zeroes of a quadratic polynomial ax^2 + bx + c are both positive, then a, b and c all have the same sign. Are the following statements ‘True’ or ‘False’? Justify your answers. (i) If the zeroes of a quadratic polynomial ax^2 [...]

(v) Can the quadratic polynomial x^2 + kx + k have equal zeroes for some odd integer k > 1 ? (v) Can the quadratic polynomial x^2 + kx + k have equal zeroes for some odd integer k > 1 ? November 22, 2020 Category: Chapter 2 - Polynomials , Maths , NCERT Class [...]

A3B2 is a sparingly soluble salt with molar mass M(gmol−) and solubility x gm litre−1, the ratio of the molar concentration of B3− to the solubility product of the salt is A3B2 is a sparingly soluble salt with molar mass M(gmol−) and solubility x gm litre−1 the ratio of the molar concentration of B3− to [...]

(iv) If on division of a non-zero polynomial p(x) by a polynomial g(x), the remainder is zero, what is the relation between the degrees of p(x) and g(x)? (iv) If on division of a non-zero polynomial p(x) by a polynomial g(x) the remainder is zero what is the relation between the degrees of p(x) and [...]