19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
What will be the oxidation state of nitrogen and alkali metal when the nitrogen and alkali metal react with each other?
In concentrated solution, the colour of alkali metals in liquid ammonia is
The colour of alkali metal ions in any sample can be detected by
Which of the following statement(s) is/are incorrect regarding property of alkali metals? I. Alkali metal on reaction with water produces a gas as a byproduct which burns with poping sound. II. Alkali metals dissolve …
On moving top to bottom among a group the correct trend of hydration enthalpies for alkali metal ions is
The most correct reason for colour of alkali metal ions is
The most electropositive alkali metal is
Alkali metals are never found in free state because
Which of the following ion(s) is/are responsible for biological functions such as maintenance of ion balance and nerve impulse conduction?
The hydration enthalpies of alkali metal ions …A… with increase in ionic sizes. Here, A refer to
Among the following element the non-radioactive elements(s) is/are
Which of the following statements(s) is/are incorrect regarding the s-block elements? I. Francium is highly radioactive element. II. Oxides and hydroxides of alkali metals and alkaline earth metals are not alkaline i…
Which of the following has the lowest value of hydration enthalpy?
Match List-I with List-II. List-I List-II
Which of the following is/are correct pair(s) regarding diagonally related elements?
Which of he following is/are less soluble in water? LiF, CsI, NaCl, KCl
The suspension of slaked lime in water is (NEET 2016)
In context with beryllium, which one of the following statements is incorrect? (NEET 2016)
Ionic mobility of which of the following alkali metal ions is lowest when aqueous solution of their salts is put under an electric field? (NEET 2017)
Among CaH2, BeH2, BaH2, the order of ionic character is (NEET 2018) (a) CaH BeH BaH (b) BeH BaH CaH (c) BeH CaH BaH (d) BaH BeH CaH
The structure of beryllium chloride in solid state and vapour phase, are: (NEET 2021)
Solubility of the alkaline earth metal sulphates in water decreases in the sequence (AIPMT 2015)
Which of the following oxides is most acidic in nature? (NEET 2018)
Among the following alkaline earth metal halides, one which is covalent and soluble in organic solvents is: (NEET 2021)
Identify the incorrect statement from the following (NEET 2022)