JEE, NEET, Foundation & CBSE

 If each term in an equation has same base units then equation is said to be
  1. Homogeneous
  2. Non homogeneous
  3. Equation of straight line
  4. Equation of circle
is equal to
  1. (√x⁴− 2x² +1)/(x²) + c
  2. (√x⁴− 2x² +1)/(x³) + c
  3. (√x⁴− 2x² +1)/(x) + c
  4. (√x⁴− 2x² +1)/(2x²)) + c
If the solubility product of iron(III) hydroxide is 1.8 ╳ 10⁻³⁷, the pH of a saturated solution of iron (III) hydroxide in distilled water is close to
  1. 4
  2. 5
  3. 7
  4. 9
Which of the following statements is not correct regarding the galvanic cells?
  1. Oxidation occurs at the anode.
  2. Ions carry current inside the cell.
  3. Electrons flow in the external circuit from cathode to anode.
  4. When the cell potential is positive, the cell reaction is spontaneous.
An ionic solid LaI₂ shows electrical conduction due to presence of
  1. La²⁺ and 2I⁻
  2. La²⁺ , I₂ and 2e–
  3. La³⁺, 2I ⁻and e ⁻
  4. La³⁺ , I₂and 3e ⁻
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