Practice questions
88551 published questions with worked solutions.
- Consider the following table: | Gas | a/(kPa dm^6 mol^ -1 ) | b/(dm^3 mol^ -1 ) | |---|---|---| | A | 642.32 | 0.05196 | | B |...
- The major product of the following reaction is: CH_3CH(OH)CH_2CH_2NH_2 [ triethylamine ] ethyl formate (1 equiv.)
- Consider the following statements: (a) The pH of a mixture containing 400 mL of 0.1 M H_2SO_4 and 400 mL of 0.1 M NaOH will be...
- A gas undergoes physical adsorption on a surface and follows the given Freundlich adsorption isotherm equation x m = kp^ 0.5 ....Not in JEE Main or NEET syllabus
- A process will be spontaneous at all temperatures if:
- The principle of column chromatography is:
- At room temperature, a dilute solution of urea is prepared by dissolving 0.60 g of urea in 360 g of water. If the vapour pressure...
- Three complexes, [CoCl(NH_3)_5]^ 2+ (I), [Co(NH_3)_5H_2O]^ 3+ (II) and [Co(NH_3)_6]^ 3+ (III) absorb light in the visible region....
- Match the refining methods (Column I) with metals (Column II). List-I: (I) Liquation (II) Zone Refining (III) Mond Process (IV)...Not in JEE Main or NEET syllabus
- During the change of O_2 to O_2^-, the incoming electron goes to the orbital:
- Which of the following is a condensation polymer?Not in JEE Main or NEET syllabus
- The region represented by |x − y| ≤ 2 and |x + y| ≤ 2 is bounded by a:
- All the pairs (x, y) that satisfy the inequality 2^ ^2x - 2 x + 5 1 4^ ^2y 1 also satisfy the equation:Not in JEE Main syllabus
- If α and β are the roots of the quadratic equation, x^2 + x - 2 = 0, (0, 2 ), then ^ 12 + ^ 12 ( ^ -12 + ^ -12 ) ( - )^ 24 is...
- If a > 0 and z = (1 + i)^2 a - i , has magnitude 25 , then z is equal to:
- If the length of the perpendicular from the point (β, 0, β) (β ≠ 0) to the line, x 1 = y-1 0 = z+1 -1 is 32 , then β is equal to:
- If _1 = vmatrix x & & - & -x & 1 & 1 & x vmatrix and _2 = vmatrix x & 2 & 2 - 2 & -x & 1 2 & 1 & x vmatrix , x ≠ 0; then for all...
- Assume that each born child is equally likely to be a boy or a girl. If two families have two children each, then the conditional...
- If _ x 1 x^4 - 1 x - 1 = _ x k x^3 - k^3 x^2 - k^2 , then k is:
- If a directrix of a hyperbola centred at the origin and passing through the point (4, -2 3) is 5x = 4 5 and its eccentricity is...