Practice questions
88551 published questions with worked solutions.
- Decomposition of H_2O_2 follows a first order reaction. In fifty minutes the concentration of H_2O_2 decreases from 0.5 to 0.125...
- For a linear plot of log (x/m) versus log p in a Freundlich adsorption isotherm, which of the following statements is correct ?...Not in JEE Main or NEET syllabus
- Which of the following atoms has the highest first ionization energy ?
- Which one of the following ores is best concentrated by froth floatation method ?Not in JEE Main or NEET syllabus
- Which one of the following statements about water is FALSE ?Not in JEE Main or NEET syllabus
- The main oxides formed on combustion of Li, Na and K in excess of air are, respectively :Not in JEE Main or NEET syllabus
- The reaction of zinc with dilute and concentrated nitric acid, respectively, produces :
- The pair in which phosphorous atoms have a formal oxidation state of +3 is :
- Which of the following compounds is metallic and ferromagnetic ?
- The pair having the same magnetic moment is : [At. No. : Cr = 24, Mn = 25, Fe = 26, Co = 27]
- The distillation technique most suited for separating glycerol from spent-lye in the soap industry is :
- 2-chloro-2-methylpentane on reaction with sodium methoxide in methanol yields : (a) C_2H_5CH_2C(CH_3)_2 - OCH_3 (b)...
- The reaction of propene with HOCl ( Cl_2 + H_2O ) proceeds through the intermediate :
- In the Hofmann bromamide degradation reaction, the number of moles of NaOH and Br_2 used per mole of amine produced are :
- Thiol group is present in :
- Which of the following is an anionic detergent?Not in JEE Main or NEET syllabus
- If f(x) + 2f ( 1 x ) = 3x, x ≠ 0, and S = x ∈ R : f(x) = f(–x) ; then S :
- A value of θ for which 2 + 3i 1 - 2i is purely imaginary, is :
- If A = bmatrix 5a & -b 3 & 2 bmatrix and A adj A = AA^T, then 5a + b is equal to
- The system of linear equations x + λy – z = 0 λx – y – z = 0 x + y – λz = 0 has a non-trivial solution for