JEE Main questions
34495 published questions with worked solutions.
- 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
- If all the words (with or without meaning) having five letters, formed using the letters of the word SMALL and arranged as in a...
- If the 2^ nd , 5^ th and 9^ th terms of a non-constant A.P. are in G.P., then the common ratio of this G.P. is
- If the sum of the first ten terms of the series (1 3 5 )^2 + (2 2 5 )^2 + (3 1 5 )^2 + 4^2 + (4 4 5 )^2 + , is 16 5 m, then m is...
- Let p = _ x 0^+ (1 + ^2 x )^ 1 2x then log p is equal to
- For x ∈ R, f(x) = |log 2 – sinx| and g(x) = f(f(x)), then :
- Consider f(x) = ^ -1 ( 1 + x 1 - x ), x (0, 2 ). A normal to y = f(x) at x = 6 also passes through the point :