Chemistry questions
29404 published questions with worked solutions.
- Match List-I with List-II List-I: (a) Sucrose (b)Lactose (c) Maltose List-II: (i) -D-Galactose and -D-Fructose (ii) -D-Glucose...
- A. Phenyl methanamine B. N,N-Dimethylaniline C. N-Methyl aniline D. Benzenamine Choose the correct order of basic nature of the...
- The correct order of electron gain enthalpy is :
- In 1 C H_2= 2 C = 3 C H- 4 C H_3 molecule, the hybridization of carbon 1,2,3 and 4 respectively are
- Seliwanoff test and Xanthoproteic test are used for the identification of ___ and ___ respectively
- Ceric ammonium nitrate and CHCl_3/alc. KOH are used for the identification of functional groups present in _____ and _____...
- Which pair of oxides is acidic in nature?
- Match List-I with List-II. List-I (Molecule): (a) Ne_2 (b) N_2 (c) F_2 (d) O_2 List-II (Bond order): (i) 1 (ii) 2 (iii) 0 (iv) 3...
- The nature of charge on resulting colloidal particles when FeCl_3 is added to excess of hot water is :Not in JEE Main or NEET syllabus
- The NaNO_3 weighed out to make 50 mL of an aqueous solution containing 70.0 mg Na^+ per mL is _______ g. (Rounded off to the...
- Emf of the following cell at 298 K in V is x 10^ -2 . Zn|Zn^ 2+ (0.1 M) || Ag^+ (0.01 M) | Ag. The value of x is ________....
- When 12.2 g of benzoic acid is dissolved in 100 g of water, the freezing point of solution was found to be –0.93°C (K_f(H_2O) =...
- The average S–F bond energy in kJ mol^ -1 of SF_6 is ______. (Rounded off to the nearest integer) [Given : The values of standard...
- A ball weighing 10 g is moving with a velocity of 90 ms^ -1 . If the uncertainty in its velocity is 5%, then the uncertainty in...
- The number of octahedral voids per lattice site in a lattice is _____. (Rounded off to the nearest integer)Not in JEE Main or NEET syllabus
- In mildly alkaline medium, thiosulphate ion is oxidized by MnO_4^- to "A". The oxidation state of sulphur in "A" is ______.
- The number of stereoisomers possible for [Co(ox)_2(Br)(NH_3)]^ 2- is _______. [ox = oxalate]
- If the activation energy of a reaction is 80.9 kJ mol^ -1 , the fraction of molecules at 700 K, having enough energy to react so...
- The pH of ammonium phosphate solution, if pK_a of phosphoric acid and pK_b of ammonium hydroxide are 5.23 and 4.75 respectively,...
- Match List-I with List-II: List-I (Electronic configuration of elements): (a) 1s^22s^2 (b) 1s^22s^22p^4 (c) 1s^22s^22p^3 (d)...