19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
If a saturated solution prepared by dissolving Ag2CO3 in water has Ag 2.56 x . What is the value of Ksp for Ag CO ? (a) 83.9 10 x (b) 8.39 10 x (c) 93.8 10 x (d) 9.38 10 x
Some chemists at ISRO wished to prepare a saturated solution of a silver compound and they wanted it to have the highest concentration of silver ion possible. Which of the following compounds, would th…
The solubility of AgI in NaI solution is less than that in pure water, because
What is the minimum concentration of required to precipitate BaSO4 in a solution containing 1.0 × 10–4 mole of Ba2+ ? Ksp for BaSO4 = 4 × 10–10
The solubility of BaSO4 in water is 2.33 × 10–3g L–1.Its solubility product will be (molecular weight of BaSO4 = 223)
How many grams of CaC2O4 will dissolve in distilled water to make one litre of saturated solution of it ? (Ksp for CaC2O4 = 2.5 × 10–9mol2 lit–2)
The solubility of AgCl at 20ºC is 1.435 × 10–3gm/lit. The solubility product of AgCl is
CH ,NH ,H O and HF are the example of
Point out the element which has simplest atomic structure among all the elements around us in nature.
In atomic form, hydrogen consists of…….X…… proton and ……..Y…… electron. X and Y are
In elemental form, hydrogen exists as
Hydrogen has resemblance to alkali metals as well as with halogens. The reason is that
Like alkali metals, hydrogen forms I. Oxides and oxyacids. II. Halides and interhalides. III. Oxides, halides and sulphide.
Hydrogen resembles halogens in many respects for which several factors are responsible. Of the following factors, which one is the most important in this respect?
Which of the following statement regarding protium, deuterium and tritium is not correct?
Assertion (A): Hydrogen is the first element in the periodic table. Reason (R): It has electronic configuration 1s .
Which of the following is/are true statement(s) regarding characteristic of hydrogen? I. Hydrogen resembles alkali metals due to the similar outer electronic configuration ns . II. Hydrogen resembles halogens due to …
Which of the following explanations justifies not placing hydrogen in either the group of alkali metals or halogens?
Which of the elements is present in plant, animal tissues, carbohydrates, proteins, hydrides including hydrocarbons and many other compounds?
Which of the following is not an isotope of hydrogen?
Deuterium is
The isotopes of hydrogen have different physical properties due to difference in mass. They have almost same chemical properties with a difference in their rates of reactions which is mainly due to
Which of the following is an atom of tritium? (a) (b) (c) (d)
In which of the following properties hydrogen does not show similarity with alkali metals?
In what respect electronic configuration of hydrogen and halogens are similar?