Chemistry questions
29404 published questions with worked solutions.
- For the following Assertion and Reason, the correct option is Assertion (A) : When Cu (II) and sulphide ions are mixed, they...
- If AB_4 molecule is a polar molecule, a possible geometry of AB_4 is :
- In general, the property (magnitudes only) that shows an opposite trend in comparison to other properties across a period is
- The statement that is not true about ozone is :
- For octahedral Mn(II) and tetrahedral Ni(II) complexes, consider the following statements : (I) both the complexes can be high...
- Consider that a d⁶ metal ion ( M^ 2+ ) forms a complex with aqua ligands, and the spin only magnetic moment of the complex is...
- In Carius method of estimation of halogen, 0.172g of an organic compound showed presence of 0.08g of bromine. Which of these is...
- An open beaker of water in equilibrium with water vapour is in a sealed container. When a few grams of glucose are added to the...
- Which of the following compounds will show retention in configuration on nucleophic substitution by OH^- ion ?
- While titrating dilute HCl solution with aqueous NaOH, which of the following will not be required?
- Consider the following reactions: (i) Glucose + ROH dry HCl Acetal x eq. of (CH_3CO)_2O acetyl derivative (ii) Glucose Ni/H_2 A y...
- Which of the following is used for the preparation of colloids ?Not in JEE Main or NEET syllabus
- The gibbs energy change (in J) for the given reaction at [ Cu^ 2+ ]=[ Sn^ 2+ ] = 1 M and 298K is: Cu(s)+Sn^ 2+ (aq.) Cu^ 2+...
- The mass of gas adsorbed, x, per unit mass of adsorbate, m, was measured at various pressures, p. A graph between x m and log p...Not in JEE Main or NEET syllabus
- The oxidation states of iron atoms in compounds (A), (B) and (C), respectively, are x, y and z. The sum of x, y and z is________....
- The internal energy change (in J) when 90g of water undergoes complete evaporation at 100ºC is ____ . (Given : H_ vap for water...
- The electronic spectrum of [ Ti(H_2O)_6 ]^ 3+ shows a single broad peak with a maximum at 20,300 cm ^ -1 . The crystal field...
- An acidic buffer is obtained on mixing :
- An organic compound [A], molecular formula C_ 10 H_ 20 O_2 was hydrolyzed with dilute sulphuric acid to give a carboxylic acid...
- The complex that can show optical activity is-