Chemistry questions
29404 published questions with worked solutions.
- The spin-only magnetic moment value for the complex [Co(CN)_6]^ 4- is _________BM. [At. no. of Co = 27]
- 2SO_2(g)+O_2(g) 2SO_3(g) In an equilibrium mixture, the partial pressures are P_ SO_3 = 43kPa; P_ O_2 = 530Pa, P_ SO_2 = 45 kPa....
- The number of nitrogen atoms in a semicarbazone of acetone is _________.
- To synthesise 1.0 mole of 2-methylpropan-2-ol from Ethylethanoate _________ equivalents of CH_3MgBr reagent will be required....
- The inactivation rate of a viral preparation is proportional to the amount of virus. In the first minute after preparation, 10%...
- An average person needs about 10000 kJ energy per day. The amount of glucose (molar mass = 180.0 g mol^ -1 ) needed to meet this...
- At 20°C, the vapour pressure of benzene is 70 torr and that of methyl benzene is 20 torr. The mole fraction of benzene in the...
- The water having more dissolved O_2 is :
- Which one of the following statements for D.I. Mendeleeff, is incorrect?
- Which purification technique is used for high boiling organic liquid compound decomposes near its boiling point?
- Which of the following compounds does not exhibit resonance?
- Match List-I with List-II List-I (Elements): (a) Ba (b) Ca (c) Li (d) Na List-II (Properties): (i) Organic solvent soluble...Not in JEE Main or NEET syllabus
- Isotope(s) of hydrogen which emits low energy –particles with t_ 1/2 value > 12 years is / areNot in JEE Main or NEET syllabus
- Match List-I with List-II List-I (Species): (a) SF_4 (b) IF_5 (c) NO_2^+ (d) NO_4^+ List-II (Hybrid Orbitals): (i) sp^3d^2 (ii)...
- When silver nitrate solution is added to potassium iodide solution then the sol produced is :Not in JEE Main or NEET syllabus
- Which of the following molecules does not show stereo isomerism ?
- Which one of the following group-15 hydride is the strongest reducing agent ?
- Match List-I with List-II : List-I: (a) Chloroprene (b) Neoprene (c) Acrylonitrile (d) Isoprene List-II: (i) structure with CH3...Not in JEE Main or NEET syllabus
- The set having ions which are coloured and paramagnetic both is -
- Thiamine and pyridoxine are also known respectively as :