Chemistry questions
29404 published questions with worked solutions.
- Among the following species, the diamagnetic molecule is:
- The correct statements among I to III regarding group 13 element oxides are, (I) Boron trioxide is acidic. (II) Oxides of...
- A solution of Ni(NO_3)_2 is electrolysed between platinum electrodes using 0.1 Faraday electricity. How many mole of Ni will be...
- Molal depression constant for a solvent is 4.0 K kg mol^ -1 . The depression in the freezing point of the solvent for 0.03 mol...
- The correct statements among I to III are: (I) Valence bond theory cannot explain the color exhibited by transition metal...
- HF has highest boiling point among hydrogen halides, because it has:
- What would be the molality of 20% (mass/mass) aqueous solution of KI? (molar mass of KI = 166 g mol^ -1 )
- The peptide that gives positive ceric ammonium nitrate and carbylamine tests is:
- 10 mL of 1 mM surfactant solution forms a monolayer covering 0.24 cm^2 on a polar substrate. If the polar head is approximated as...Not in JEE Main or NEET syllabus
- Assertion: For the extraction of iron, haematite ore is used. Reason: Haematite is a carbonate ore of iron.Not in JEE Main or NEET syllabus
- At a given temperature T, gases Ne, Ar, Xe and Kr are found to deviate from ideal gas behaviour. Their equation of state is given...
- The amorphous form of silica is:
- Which one of the following about an electron occupying the 1s orbital in a hydrogen atom is incorrect? (The Bohr radius is...
- Amylopectin is composed of:
- Consider the hydrated ions of Ti^ 2+ , V^ 2+ , Ti^ 3+ , and Sc^ 3+ . The correct order of their spin-only magnetic moments is:
- Consider the statements S1 and S2: S1: Conductivity always increases with decrease in the concentration of electrolyte. S2: Molar...
- 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